Ethernet Aggregation Switch MES3324
- Level:
- L3
- Bandwidth:
- 128 Gbps
- Interfaces:
- 20x1G, 4x1G Combo, 4x10G SFP+, 1xOOB
- Power supply:
- AC/DC
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Description
MES3324 is an Ethernet aggregation switch that can be used in service provider networks as aggregation or transport switch. It has a great margin of performance due to universal interfaces operating at speeds of 10Gbps or 1Gbps.
MES aggregation switches’ feature set includes advanced L2 functions, static routing, dynamic routing, 4 SFP+ 10 Gbps interfaces, stacking of up to 8 devices, redundant and hot swappable power supplies.
The switches comply with CE requirements.
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Specifications
- Level:
- L3
- Bandwidth:
- 128 Gbps
- Interfaces:
- 20x1G, 4x1G Combo, 4x10G SFP+, 1xOOB
- Stacking:
- up to 8 devices
- MAC table:
- 16384
- ARP:
- 4023
- Dynamic routing:
- RIP/OSPF/IS-IS/BGP
- Power supply:
- AC/DC
ECCM
Eltex Cloud Configuration Manager is a centralized system for network equipment management
Features and capabilities
For full specifications and manuals see Documents and files section below
Related products
Components, modules, and software options that are purchased additionally
Free
Basic warranty
Up to 5 years
Extended warranty
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Free
First in, first out
Monday to Friday (GMT +7)
Priority support
Monday to Friday (GMT +7)
Priority support
Monday to Friday (GMT +5)
Support
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Documents and files
MIB Files (Issue date: 10-04-2025)
ZIP, 1.38 Mb
Firmware version upgrade guide (Issue date: 09-04-2025)
PDF, 950 Kb
Firmware version 4.0.24.1 R2 (Issue date: 10-04-2025)
ZIP, 25.3 Mb
The firmware is compatible with other device models:
MES2324B, MES2324F DC, MES2324, MES2348B, MES3348, MES2308P, MES2324P, MES3316F, MES2308, MES3508P, MES2348P, MES2308R, MES2328I, MES3510P, MES3348F, MES2324FB, MES3324F, MES3308F, MES3508
Firmware updates
Firmware Version 4.0.24.1
Added:
- Added ability to disable command authorisation for individual line;
- Added ability to specify source interface when working via TFTP;
- Expanded number of map MAC rules that can be configured on an interface;
- Added LACP force-up mode of operation;
- Added ability to filter IP-interface and OSPF contexts in run-configuration;
- Added output of extended TLV information in IS-IS database;
- Added support for BGP temporary licences;
- Added sending SNMP-trap when adding a unit to the stack;
- Added support for reject-route in VRF;
- Added SNTP support in VRF.
Fixed:
- The delay in re-authentication when receiving a Disconnect Request for a Dot1x session has been removed;
- Fixed the premature transfer of ports to the forwarding state when rebuilding protocol trees (R)PVST,MST;
- Fixed stack freeze with a large number of LACP, STP instances and NSF enabled;
- Fixed the inclusion of RPVST instances in VLANs where this protocol is administratively disabled;
- Fixed bug where device would not allow MAC-based VLAN configuration on new interfaces;
- Fixed a critical error that occurs when authorizing commands using the TACACS+ protocol;
- Fixed an error where after disabling the filtering of Martian addresses, the default route in the VRF acquires the failed to install status;
- Fixed a critical error that occurs when an incorrect DHCP Discover packet arrives on the device;
- Fixed an error causing an SSH connection to the device to fail;
- Fixed an error in MSDP SA packets where the source prefix was incorrectly set;
- Fixed a critical error that occurs when installing MSDP neighborhood;
- Fixed an error with power supply to the additional CISCO phone panel;
- Fixed issue where device reboots during MAC-based VLAN configuration;
- Fixed standart ACL not being deleted;
- Fixed issue with DDM mapping for FiberTrade FT-SFP+WDM-LR-20 and NPO Telecom JSC NGN-SFP transceivers;
- Fixed spanning-tree portfast mode for RPVST/PVST.
Previous versions
Firmware Version 4.0.23.6
Added:
- Added the ability to specify the destination port when copying files over tftp, scp, sftp;
- Added the ability to specify the destination port in the backup server command
Fixed:
- Fixed an error in the web interface;
- Fixed a critical error that occurred when re-authenticating the client in the voice vlan;
- Fixed a critical error that occurred when changing the voice vlan operation mode;
- Fixed the operation of the FIBO FT-S1-RJ45 SFP module in 1G ports;
- Fixed a critical error in dot1x operation;
- Fixed the error of executing the no security-suite deny syn-fin command when transferring skills in the stack;
- Fixed the error of executing the port monitor command on 48 port devices.
Firmware Version 4.0.23.5
Added:
- Added support for tacacs-server host source-interface command in VRF;
- Added VRF support for TACACS+;
- Added implementation of user disconnection when receiving Disconnect-Request from Radius server.
Fixed:
- Fixed an error when logging in via the WEB;
- Fixed a critical error occurring when requesting invalid cookies when the HTTP server on the switch is enabled.
Firmware Version 4.0.23.1
Added:
- Added the ability to configure static ospf neighbors;
- Added ospf network type non-broadcast, point-to-multipoint, non-broadcast operating modes;
- Added the ability to send SNMP trap and Syslog messages when the signal level exceeds the threshold values;
- Added the ability to work together ip unnumber and dhcp relay;
- Added support for the NTPv4 protocol;
- Added support of the FTP client;
- Added sending an SNMP trap when connecting a new unit to the stack;
- Added the ability to enable temporary blocking of a local user in case of a number of unsuccessful authorization attempts;
- Added the ability to work together on the dot1x guest vlan and dot1x radius-attributes vlan ports;
- Added support for the Termination-Action Radius attribute for Dot1x sessions;
- Added support for the Session-Timeout Radius attribute for Dot1x sessions;
- Added the ability to configure 802.1x critical-vlan;
- Added the ability for Voice VLAN traffic to ignore 802.1x authentication;
- Added the ability to force multicast EAP Request Identity packets to be sent, regardless of the authorized clients behind the port;
- Added support for processing unicast EAP packets;
- Added setting of the TMPDO parameter for PoE.
Fixed:
- Fixed the location of the AAA settings in the configuration file;
- Fixed an error in the operation of sntp unicast;
- Fixed an error in the output of the show ntp command;
- Fixed device reboot when trying to enable STP in a non-existent VLAN in PVST mode;
- Fixed a critical error that occurs when changing the mode from MST to RPVST;
- Fixed an error in the operation of the no portfast command in PVST+/RPVST+ mode;
- Fixed the possibility of displaying the GRT table when specifying a non-existent VRF in the show command;
- Fixed vulnerability of the Web interface;
- Fixed an error that causes ports to drop out of LAG when there is a high traffic load on the CPU;
- Fixed the error of displaying the role of ospfv2 neighborhoods;
- Fixed an authorization error for several dot1x clients with the dACL attribute;
- Fixed the error of deleting the standard ACL;
- Fixed an error in studying the MAC address of the applicant successfully authenticated by dot1x;
- Fixed a configuration synchronization issue in the stack, leading to stack unit freezes and critical errors;
- Fixed the error of synchronization of ECMP routes in the stack, leading to critical errors on stack units;
- Fixed a dot1x authorization timer error that caused the device to reboot;
- Improved the stability of the ERPS sub-columns (changed the logic of configuration application);
- Fixed the error that causes the switch to reboot when polling certain OIDs over SNMP.
Firmware Version 4.0.22.7
Added:
- Added an additional storm protection mechanism in the ring stack topology;
- Added the ability to change the next-hop attribute in reflected BGP routes;
- Added the ability to work with route 0.0.0.0/2;
- Added the ability to limit the number of active ports in LAG with LACP;
- Added separation of dynamic ACL/Filter-Id attributes for multiple supplicant devices per port.
Fixed:
- Fixed a problem with traffic interruption in the stack with NSF;
- Fixed a problem with the LAG interface hanging when the link is quickly turned off/on;
- Fixed a behavior in which routed traffic with two VLAN tags did not initiate sending an ARP Request;
- Fixed the error of installing the dynamic route 192.0.0.0/2 in FIB;
- Fixed a switch reboot that may occur when connecting a new unit to a stack of several units with a configured VRF;
- Fixed the error of re-authenticating multiple users with the presence of the dACL radius attribute;
- Fixed device reboot when several users are connected via ssh at the same time;
- Reduced the time when ports are in the UP state when they are initialized at the boot stage of the MES3324 switch;
- SSH server operation has been stabilized;
- Fixed a dot1x authorization error that led to a reboot when receiving a dynamic ACL with a name of more than 31 characters;
- Fixed an error that led to a reboot when replacing the IP address on the VLAN interface with an address from the same network;
- Fixed memory leak during dot1x reauthentication of supplicant devices with dACL attribute;
- Fixed CDB blocking during dot1x authorization and dACL attribute assignment.
Firmware Version 4.0.22
Added:
- Added the ability to configure the TCP adjust-mss parameter;
- Added the ability to configure description in the context of a BGP neighbor;
- Added the ability to change the password during TACACS authentication+;
- Added VRF support in BGP;
- Added PIM support for GRE tunnels;
- Added the ability to disable the study of mac addresses in the Data vlan from devices that fall under the OUI when the voice vlan is running;
- Added the ability to set the size of the RSA key;
- Added the ability to enable BFD for the OSPF neighborhood;
- Added the ability to copy the license for the specified unit in the stack;
- Added support for new algorithms in SSH for KEX, HostKey/PubKey, Ciphers, MAC;
- Added command to enable/disable multicast traffic replication restriction;
- Added support for encryption algorithms: aes128-ctr, aes192-ctr, aes256-ctr, aes128-gcm@openssh.com , aes256-gcm@openssh.com , chacha20-poly1305@openssh.com;
- Added the ability to display s/n SFP by command show inventory;
- Added the ability to display licenses for each unit in the stack (show license unit x).
Fixed:
- Fixed reboot of the switch when the mtu overflows in the pim join/purne message;
- Fixed an error when deleting a VLAN whose SVI interface is associated with a VRF;
- Fixed behavior in which OSPF routes were not transferred from the NSSA zone to BGP;
- Fixed an issue where instances could block the DHCP Offer/Request when using DHCP Snooping and MSTP;
- Fixed incorrect display of queue counters on MES5324;
- Fixed erroneous allocation of PVST instance for vlans missing from vlan database;
- Fixed a behavior where a rejected route was not created when configuring summary-address;
- Fixed an error when configuring a large number of BGP peer-groups;
- Fixed sending PVST+ BPDU from the access port when nsf functionality is active;
- Fixed an error in switching to UP SVI after rebooting when running rapid-pvst;
- Fixed an error related to the present/not present states of copper SFP modules;
- Fixed an error in logs when working together with dhcp snooping and port security;
- Fixed an error that occurs when adding a large number of routes accepted on the device using dynamic routing protocols;
- Fixed the display of qos statistical interface counters for devices with 48 ports;
- Fixed erroneous allocation of PVST instance for vlans missing from vlan database.
Firmware Version 4.0.21.7
Fixed:
- Improved device stability when using SSH;
- Improved device stability when using RPVST;
- Fixed memory leak in STP processes;
- Fixed problem of ARP Reply passing in stack.
Firmware Version 4.0.21.5
Added:
- The Framed-IP-Address attribute has been added to radius requests for 802.1x sessions;
- Added NAS-Port-Id attribute in radius requests for 802.1x sessions;
- Implemented NTP server selection mechanism;
- Increased the maximum device uptime value;
- Added support for filtering by the value of the as-path attribute in BGP;
- Added the ability to include the Calling-Station-Id attribute in CoA;
- Expanded the number of DHCP Relay servers to 32;
- Expanded the number of OSPF processes to 20.
Fixed:
- Fixed voice vlan operation in conjunction with 802.1x;
- Fixed a bug that caused the switch to reboot with an error when changing the STP mode from RPVST to any other;
- Fixed a bug that caused MAC addresses to stop learning after resetting the port to factory settings;
- Fixed a bug that caused the connection to break when copying firmware over SCP;
- Fixed a bug that caused the null instance to block the DHCP offer/request when using MSTP;
- Fixed a bug that caused the switch to reboot when copying files over SCP;
- Fixed an error when changing the skill in the stack of 8 units due to which the switch was rebooted;
- Fixed RequestId counter in SNMP Trap;
- Fixed a bug that caused the VPC group to not gather after the link was broken;
- Fixed an issue where Peer Link goes into Error Disable state when VPC is turned off;
- Fixed a problem with synchronization of route records between devices in the stack;
- Fixed error with sntp time synchronization after switch reboot;
- Fixed error authorization of clients by Radius with VLAN attribute after reboot of the switch;
- Fixed erroneous rebuilding of PVST in the stack when there is a qos wrr-queue wrtd command in the configuration;
- Fixed a problem with SNTP;
- Fixed a problem with VRF and stack;
- Improved stability of OSPF;
- Improved stability when working together DHCP Relay and VRRP;
- Improved PVST stability.
Firmware Version 4.0.20
Added:
- Added support for static ARP entries with Multicast MAC address;
- Added support for BGP community;
- Added support for OSPF auto-cost reference-bandwidth.
Fixed:
- Fixed port going into UP state even though there was no physical connection in the stack;
- Fixed the shortened version of the show ip interface vrf command not being accepted;
- Improved device stability when SSH and Tacacs server work together;
- Fixed an error in the PoE functionality, leading to a reboot of one of the stack units;
- Fixed an error that occurred when negotiating an ssh key error;
- Fixed issue with FIBO FT-S10-X3110LD SFP transceivers.
Firmware Version 4.0.19
Added:
- SFTP-server is now supported;
- Added Trunk port mode that allows you to not specify the list of allowed VLANs;
- Added the ability to relearn MAC addresses between switch ports and VPC peer-link;
- Added BGP route-map support when redistributing routes from other protocols;
- Added the ability to select the checksum calculation method for VRRPv3;
- Added ability to change Administrative Distance for static routes and for OSPF routes;
- Added the ability to specify tags for routes;
- Added the ability to create multiple port isolation groups;
- Added the ability to disable sending an empty packet to check the availability of the TFTP server;
- Added show-commands to view SNMP configuration in VRF;
- Added the ability to use the default interface command for interfaces in VRF;
- Added SNMP Trap for stack link state changing;
- Added support for simplex communication lines for MES3508;
- Added support for NNI/UNI interfaces;
- Added the ability to authorize MAC and 802.1x clients on different RADIUS servers;
- Increased the number of IP addresses leased by the DHCP server.
Fixed:
- Fixed error when trying to add description for Prefix-List;
- Fixed display of ip ospf mtu-ignore command;
- Fixed DHCP Snooping interaction algorithm with QinQ;
- Fixed error when deleting TACACS servers from the configuration;
- Fixed bugs when disabling Spanning-Tree on ports;
- Fixed bug in L2Protocol-Tunneling operation with PVST;
- Fixed too long transition of links to DOWN after the reload command on MES3508;
- Fixed TACACS+ command authorization processing error for multiple servers;
- Fixed bug with a possible traffic blocking through the L3 interface with the added ip policy route-map;
- Fixed bug in displaying LSDB records in OSPFv3;
- Fixed error when forwarding LSA from NSSA to backbone in OSPFv3;
- Fixed bug in sending wrong LSA type from ASBR to ABR;
- Fixed bug of mutual influence of optical ports 11 and 23 on MES3324F models when connecting some models of SNR Qtech switches;
- Fixed error when polling via SNMP OID eltCountersQosPktsDroppedCounter (1.3.6.1.4.1.35265.1.23.1.8.1.2.1.1.1.5);
- Fixed false occurrence of i2c bus error messages;
- Fixed error when issuing show inventory;
- Fixed device error when a VRRP packet is received on an IP interface added to VRF;
- Fixed bug with high CPU utillization in stack with emabled NSF;
- Fixed problem with POE controller;
- Fixed problem with VPC operation.
Firmware Version 4.0.18.4
Added:
- Added command that disables the preliminary TFTP server availability check when copying files;
- Added VPC support on industrial switches;
- Added VRF support in the snmp-server source-interface command.
Fixed:
- Fixed problem with PS and fans flapping when connecting SFP FH-ST2;
- Fixed bug with incorrect calculation of CPU load;
- Fixed bug that caused the device to reboot when interacting with Cisco devices via telnet;
- Fixed bug where DDM readings were incorrect;
- Fixed traffic loss during routing if incorrect MAC address was learned;
- Fixed bug in OSPFv3 that caused the backbone of the switch to reboot;
- Fixed bug that caused master device to reboot when adding a unit with a version older than 4.0.15 to the stack;
- Fixed bug that caused the device to reboot when copying a certain configuration from a TFTP server;
- Fixed bug in MSTP, when backup ports were not detected in MST instances other than Instance 0;
- Fixed bug that caused the device to reboot when polling certain SNMP OIDs.
Firmware Version 4.0.18
Added:
- Spanning tree bpduguard support for PVST/PVST+;
- Support for PVST/PVST+ bpdu filtering;
- Basic Multi-VRF support for static routes, DHCP Relay, OSPF, SNMP;
- SCP server support;
- Support for Port-Channel as an egress interface when configuring RSPAN;
- Route-map support for OSPF;
- BGP IPv6 support;
- Implementing the "errdisable recovery interval" setting separately for each physical interface;
Fixed:
- Fixed issue with FiverTool, UpNet, ModuleTech WDM SFP modules;
- Fixed issue where snmp-server source-interface could not work with loopback-interface;
- Fixed an issue when the interface would not change status to UP on a two-pair copper cable with the default configuration;
- Fixed an issue where a hang occurred when copying a configuration to running-config;
- Fixed display of directly connected networks in show ipv6 route command output;
- Fixed a problem that occurred when loading a configuration in startup-config;
- Fixed critical error when configuring VPC on MES35xx;
- Fixed problem with authorization of long commands;
- Fixed memory leak due to copy over SCP;
- Increased the maximum number of characters in the VLAN name (up to 128).
Firmware Version 4.0.17
Added:
- Added NSF (Non-Stop Forwarding) support for stack mode;
- Added restriction on the simultaneous use of different ring protocols;
- Interface state change logging can be disabled now;
- Added the feature to DHCP snooping, which disables the interface when the specified number of DHCP datagrams per second is exceeded;
- Added file copy start event SNMP-trap;
- Added "show lldp neighbors detail" command;
- Added software version display in show lldp neighbors detailed output;
- Traffic transmission between ports on which QinQ is configured in tr101 mode, with the same S-VLAN tags, but different C-VLAN tags is now forbidden;
- Implemented the ability to configure MAC address replacement in IGMP-report when using IGMP-Proxy;
- Implemented restricted-tcn on LAG interfaces;
- Changed TCAM resource allocation mechanism;
- Added port trust mode when replacing source ip/mac in IGMP-report;
- Increased stack throughput in ring topology;
- When assigning a vlan attribute from a radius server, the value of the Tag field in the AVP Tunnel-Private-Group-Id can take any value;
- Added the ability to configure the minimum number of aggregated links for LACP;
- Added the ability to limit the maximum number of CLI sessions;
- The password in the logs when copying files via SCP is not displayed anymore;
- Increased file download speed when issuing copy commands via telnet and SSH;
- Added the ability to assign the backup role to the maximum number of devices in the stack;
- Added full message output when rebooting the device via SNMP.
Fixed:
- Fixed "show port jumbo-frame" and "show interfaces mtu" outputs;
- Fixed "show radius-servers status" command;
- Fixed stuck users in "show users";
- Fixed configuration loading issue if it contains "logging events spanning-tree topology-change";
- Fixed issue with incomplete MAC table flushing;
- Fixed traffic breaks when changing aggregated link membership with 4K VLAN;
- Fixed incorrect behavior of GVRP with Jumbo Frame enabled;
- Fixed rate-limit (burst not set) issue where no traffic was transmitted;
- Fixed the issue of stopping traffic that occurs when entering the "traffic-limiter mode pps" command;
- Fixed switch reboot that occurred when entering the "show ip ospf database router" command;
- Fixed %p template value for port-channel in option 82;
- Passwords in unencrypted form are not displayed in syslog anymore;
- Fixed loopback-detection on port-channel;
- Fixed the simultaneous use of QinQ and CFM;
- Fixed port switching in UP state when transmission is disabled on SFP module;
- Fixed offset-list functioning in customer mode with double tagging;
- Fixed power issues when connecting Hikvision cameras;
- Fixed removal of all routes at once by the "no ip default-gateway X.X.X.X" command;
- Snmpbulkwalk request processing has been stabilized;
- Fixed operation of Status indicators when updating the version;
- Fixed the issue when configuring STP protocol after disabling ERPS protocol;
- Fixed the issue when polling stack ports via snmpwalk command;
- Fixed display of "selective-qinq list egress" rule in running-config;
- Fixed discrepancy between the state of Port-Channel and physical ports in it when (R)PVST is running;
- Removed special character <cr> in TACACS accounting packets;
- Fixed SysUptime field value in sFlow packets.
Firmware Version 4.0.16.14
Added:
- Implemented the ability to remove a VLAN from PVST/RPVST instance without first shutting down the port;
- PVST/RPVST settings for VLAN are now grouped.
Fixed:
- Fixed a bug with the occurrence of a short-term storm of the ERPS ring;
- Fixed error caused by SNMP polling CPU utilization values;
- Fixed RAM allocation error when polling via SNMP;
- Fixed high CPU usage bug when polling via SNMP;
- Fixed reboot of the switch when using voice vlan in conjunction with DHCP snooping in the stack;
- Fixed bug in voice vlan operation in PVST/RPVST modes;
- Fixed reboot while viewing show commands when saving configuration via remote session.
Firmware Version 4.0.16.5
Added:
- Added support for MD5 authentication to BGP;
- Added the ability to configure metric-type when announcing routes in OSPF.
Fixed:
- Fixed incorrect display of Bridge ID in the output of PVST protocol information.
Firmware Version 4.0.16.4
Added:
- Added the ability to determine the type of power supply PM160 revB;
- The range of setting the lifetime of MAC addresses in the corresponding table has been increased to 1,000,000 seconds.
Fixed:
- Fixed incorrect work of the STP protocol in the stack;
- Fixed incorrect work of the LACP protocol in the stack;
- Fixed a slowdown in the CLI when polling the stack via SNMP.
Firmware Version 4.0.16.2
Added:
- Added the ability to configure udp src port for SNTP;
- Added the ability to configure restricted-tcn on LAG interfaces;
- Added the Alarm relay management.
Fixed:
- Fixed incorrect ACL operation on the backup and slave units stack interfaces;
- Fixed incorrect operation of sQinQ rules on the backup and slave units stack interfaces;
- Fixed reboot of the backup unit when configuring "traffic limiter-mode pps";
- Fixed the logic of the deny rules in PBR ACL;
- Fixed incorrect operation of the "negotiation bypass forced" command;
- Fixed incorrect operation of static routes for VLAN interfaces with two or more IP addresses configured;
- Fixed the logic of IP interfaces changing to the "operational status UP" state;
- Fixed a short-lived storm in the ERPS main ring when configuring the sub-ring;
- Fixed transition of IP interfaces to the "operational status UP" state when dynamically adding a VLAN to a physical interface via a RADIUS attribute;
- Fixed reboot of the device due to receiving an IP address through an interface with configured IP Source Guard;
- Fixed the display of FEC status on the backup unit.
Firmware Version 4.0.16
Added:
- Added saving of secure mac-addresses to the device configuration file in port security secure permanent mode;
- Added the ability to authorize entered commands using the TACACS+ protocol;
- Added the ability to forcibly enable/disable the LED indication of interfaces;
- Added the ability to process 802.1ad traffic on the CPU;
- NTP protocol is now supported;
- Added the ability to enable guard root protection for a specific MSTP instance;
- Added the ability to set the limit for ingress traffic in pps;
- Added the ability to limit ingress arp traffic for a specific port;
- RADIUS attribute value Cisco-AVPair = "shell: roles = network-admin" is now supported;
- Added sending SNMP trap and syslog messages when the device is rebooted with the reload command;
- Added the ability to assign master role to the stack unit;
- Added the ability to enable vlan-based loopback-detection in specified VLANs;
- Added the ability to disable IRDP protocol.
Fixed:
- Fixed disabling command completion with the Tab key;
- Fixed MAC address forbidden by MAC ACL learning when DHCP snooping is enabled;
- Fixed device reboot with the backup role in the stack when the ip DHCP snooping database is disabled;
- Fixed telnet session breaking by the device when removing ports from the LAG;
- Fixed incorrect blocking of ports by the disable-port feature in ACL;
- Fixed the behavior where the loopback-detection vlan-based function did not unblock VLANs;
- Fixed device reboot when trying to apply changes to the ACL using the commit command;
- Fixed device reboot in the stack due to incorrect operation of the sFlow application;
- Fixed incorrect output of logging messages and sending SNMP trap for allowed mac-addresses when port-secure is running;
- Fixed VPC connection not being established when there is a large number of VLANs;
- Increased the speed of transferring files using the SCP protocol;
- Fixed device reboot when VPC and STP work together;
- Fixed a behavior where there was a long interruption in traffic passing when rebooting a VPC device with the primary role;
- Fixed incorrect indication when using SFP transceivers from FIBO, Strela, Opticin vendors.
Firmware Version 4.0.15.3
Fixed:
- Fixed switch reboot when trying to configure IP Source Guard on a port without global enabling.
Firmware Version 4.0.15.2
Fixed:
- Fixed incorrect addition of a non-participating port to a VPC group on the MES5324 switch;
- Fixed behavior where both VPC peers were sending STP BPDUs to ports of the same VPC group;
- Decreased CPU load when VPC is running.
Firmware Version 4.0.15
Added:
- Stack port status display;
- Protocol ARP in IP ACL support;
- Protocol GRE support;
- Command «show tech-support» output was expanded;
- Buffers for traffic mirroring were expanded;
- L2PT on top of LAG support;
- Support of the UDLD, RIP, OSPF, VRRP in L2PT;
- Private-vlan trunk mode;
- IP DHCP route [connected/static] feature support;
- Ability to add a "port" field template in TACACS+ packets;
- Power supply type display;
- Information about the attack output in TCP Syn Protection was expanded;
- Ability to view telnet-sessions status;
- Ability to download SW and configuration files via HTTP.
Fixed:
- Fixed duplicating packets when passing through L2PT running on top of LAG;
- Fixed simultaneous operation of voice vlan and 802.1x;
- Fixed operation of client port mode on slave units;
- Fixed accounting of show version command when working with TACACS +;
- Fixed output when trying to create a VPC group with a number outside the valid range (1-63);
- Fixed bug when trying to create more than 9 VPC groups;
- Fixed the "show vpc" command output after deleting a VPC group;
- Fixed error of removing snmp-server host informs;
- Fixed bug of deleting MST config name;
- Fixed switch reboot when trying to establish an SSH connection to itself;
- Fixed bug with changing STP mode on switch ports;
- Fixed switch reboot when using RIP authentication;
- Fixed operation of restricted TCN feature;
- Fixed bugs when learning MAC addresses on ports with PVST and RPVST enabled;
- Fixed switch reboot when establishing multiple SSH sessions;
- Fixed short-term storm in ERPS ring;
- Fixed incorrect operation of P2P mode in the ISIS protocol;
- Fixed switch reboot with periodic Telnet connection;
- Eliminated the need to assign IP addresses from the same subnet to the switch interface and client equipment for correct processing of the igmp report;
- Fixed the switch freezing when displaying a large amount of information on the screen via ssh session;
- Fixed disabling SSH server when trying to log in with an empty password;
- Fixed unused ssh sessions not being closed;
- Fixed incorrect message when trying to reconfigure port security max;
- Fixed incorrect calculation of path cost in STP protocols.
Firmware Version 4.0.14.3
Fixed:
- Fixed incorrect operation of SSH, which led to device reboot;
- Fixed incorrect work of STP, which led to an error in enabling the flex-link function;
- Fixed incorrect display of fan crashes;
- Fixed a bug with the port security discard-shutdown action;
- The behavior that caused the interface to briefly rise at 1G speed, despite the fact that the configuration is set to 100M, has been eliminated;
- Fixed incorrect display of the amount of RAM for the MES5324 device.
Firmware Version 4.0.14.2
Added:
- Added support for PVST + operation with switchport general port mode.
Fixed:
- Fixed operation of the shutdown action in port-security when receiving a packet with a mac address learned on a different port;
- Fixed copying files via SCP;
- Fixed error copying startuр-config file to TFTP server;
- Fixed duplication of interfaces when polling SNMP table entPhysicalDescr on MES5324 devices;
- Fixed restarting devices in the stack with a certain combination of stack ports;
- Fixed restart when connecting devices to the stack with LAG configured.
Firmware Version 4.0.14.1
Added:
- Added the ability to change the default sysDescr;
- Added the ability to limit the number of MAC-addresses for Voice VLAN;
- Added the ability to block a specific VLAN via port security;
- Added the ability to enable ip source-guard for a specific VLAN;
- Protocols VTP, CDP, DTP, PAGP, PVST+ now support L2PT.
Fixed:
- Fixed the disappearence of backup write-memory command while copying configuration to the device via tftp;
- Fixed the reboot at high CPU load and telnet-session break;
- Fixed the failure of dscp-cos map after reboot of the device;
- Fixed the faulty discard of the DHCP discover packets on 10G interfaces;
- Fixed the faulty blocking of traffic addressed to the CPU using the ERPS protocol;
- Fixed the switchport mode change from general to trunk when default-vlan is disabled;
- Fixed the information display of some show-commands (incorrect symbol placement while moving the bar and changing the line)
- Fixed the freezing after utilizing reload at command;
- Fixed the switch reboot after adding voice vlan on port with clients authorized via dot1x;
- Fixed the reset to default port configuration when general mode is configured.
Firmware Version 4.0.14
Added: - Added support for 4x10G ports 40G operation mode;
- Added IP SLA function;
- Added support for IS-IS routing protocol;
- Added support for long frames when tunneling the IS-IS protocol;
- The syslog message format has been converted to CEF;
- Added Portfast support in PVST + / RPVST + mode;
- Added "*" mark for inactive routes in the routing table;
- Added support for Intel FTLX1471D3BCVI31 SFP module;
- The display of the hostname in the cli has been increased to 25 characters;
- Added support for AES encryption protocol in SNMPv3;
- Implemented sending snmp trap when receiving DHCP ACK / OFFER from an untrusted interface;
- Added encryption algorithms aes128-ctr, aes192-ctr, aes256-ctr for SSH sessions;
- Added loop / root-guard support for PVST mode;
- Increased queue-limit limits in qos tail-drop profile;
- Added counters for ACL rules;
- Added the ability to work sqinq add_vlan rules in conjunction with igmp snooping / proxy;
- Added display in the "show lldp neighbors" command of the ChassisId output in the IP-address format, if the neighbor's ChassisIdSubtype contains the networkAddress value;
- Edited command set from show tech-support output;
- Added display of information on stack ports in the "show tech-support" command;
- Added support for OpticQ SFP + Transceiver 10Gbps modules, corrected DDM information output;
- The Idle timer in the SSH server has been improved, the SSH session is closed if it is in the FIN-WAIT-1, FIN-WAIT-2, TIME-WAIT, CLOSE-WAIT, LAST-ACK, CLOSING states for more than 60 seconds;
- Added the ability to edit ACL without decoupling from interfaces;
- Added the Change of Authorization (CoA) function;
- Added support for STP protocol on VPC aggregated links;
- Added support for 512 subnets for ipv4 (128 for mes2324 devices) and 128 for ipv6;
- Added command prompt ip dhcp information option format-type remote-id;
- Added support for PoE power supply for Hikvision DS-2CD3625FHWD-IZS cameras on MES3508P devices;
- Added the ability to extend tail-drop profile limits via CLI to maximum values;
- Increased default mirroring limits.
Fixed:
- Fixed incorrect detection of speed of 10Gbps DA-cable;
- Fixed work with some 1Gbps SFP modules;
- Fixed VPC operation at startup without peer-link;
- Fixed portfast operation in STP mode;
- Fixed restart when displaying spanning-tree settings;
- Fixed errors of authorization according to the 802.1x standard using radius-attributes;
- Fixed bugs in the console speed autodetection mechanism that caused the switch to hang;
- Fixed disappearing backup write-memory setting from running-config;
- Fixed restart when trying to auto-negotiate duplex mode;
- Fixed a bug due to which SNMP traps were not sent when mac-notification is enabled when the port is disabled;
- Fixed loading settings from startup-config for vlan 1;
- Fixed looping of igmp packets via peer-link VPC;
- Fixed bug with transit traffic getting into priority queues on cpu;
- Fixed error when configuring errdisable recovery cause;
- Fixed MSTP operation on a device to which the device is connected via an aggregated channel at the time of reboot;
- Fixed restart when connecting to a switch operating in RPVST mode, a switch operating in RSTP mode;
- Fixed restart when removing acl from multiple vlanes at the same time;
- Fixed restart when connecting via ssh - fixed unsafe use of pointers;
- Fixed stack freeze when connecting via com-port at 9600 Baud;
- Fixed operation of the SSH protocol, increased the number of buffers in the SSHD pool;
- Fixed a bug with assigning an ipv6 address to a physical interface;
- Fixed work of BGP and BFD, to avoid desynchronization of tasks using the SOCKG_recv function, the logic of using semaphores was changed, the reference to a pointer was replaced with a safer one;
- Fixed operation of access lists in a situation when acl is removed from one port, which was previously configured for several ports;
- Added traces to SSH in case of an attempt to delete a non-existent user;
- Fixed a bug in RSTP operation: discarding an agreement packet if its BridgeID was less than that on the switch that received the packet;
- Fixed the problem with the transmission of PPPoE IA headers;
- Fixed reboot when checking ping with minimum timeout;
- Fixed the problem of passing CFM packets to alternate port in RSTP;
- Fixed VPC operation when rebooting a primary device.
- Fixed bug with switchport protected-port;
- Fixed a bug when establishing an SSH session;
- Fixed a bug with incorrect PoE operation with Hikvision DS-2CD3625FHWD-IZS cameras;
- Fixed bug with freeing TCP sessions when they were closed;
- Fixed a bug with assigning an IPv6 address to a physical interface.
Firmware Version 4.0.13.3
Added:
- Added the ability to remove VLAN_ID in customer mode based on both s-vlan and c-vlan;
- Implemented Per-port fast leave mode;
- Extended list of encryption algorithms for SSH;
- Implemented TC-protection functionality;
- Added support for simultaneous operation of customer mode and MVR function;
- Increased priority of VPC PDUs on the CPU;
- Added a separate output of VPC PDU counters to the CPU;
- Added the ability to configure DHCP options 82 in different VLANs;
- Added support for FiberTrade 80km SFP 8.5G SFP.
Fixed:
- Fixed error deleting protected MAC addresses during reboot;
- Fixed a bug leading to delays in the transmission of multicast traffic;
- Fixed a bug in the auto-detection mechanism for com-port speed;
- The bug of voice-vlan and 802.1x functionality working is fixed;
- Fixed routing error in MES2348B and MES3348 devices;
- Authorization errors using the RADIUS protocol have been fixed;
- Fixed the bug of DHCP Relay and IP Unnumbered collaboration;
- The error of the functionality of Backup after copying files by tftp is fixed;
- Fixed bug with incorrect operation with some SFP / SFP modules;
- Fixed long output show fiber-ports optical-transceiver for SFP without DDM support;
- The error of applying an empty tail-drop profile in the default configuration has been fixed;
- Fixed removal of Voice VLAN when port security is in lock mode.
Firmware Version 4.0.13
Added:
- Added additional syslog message for secure mac address in port-secure functionality;
- Added the ability to view the configuration for the current context of interfaces;
- Added Service-Type attribute to RADIUS request when port-based user authentication;
- Added the ability to accept a list of ACL rules in a response from radius-server for the Dot1x functionality;
- Added functionality for advanced privilege settings for teams;
- Added BFD functionality for BGP;
- Added SSH command execution mode without interactive connection;
- Added functionality MLAG / VPC;
- Added the ability to view the time the port is in the down state;
- Added support for PBR functionality;
- Added functionality for summing external routes OSPF / OSPFv3 on ASBR;
- Added Rapid PVST functionality;
- The number of pools for a DHCP server has been expanded from 16 to 32;
- Added the ability to automatically restart PoE in case of error detection.
Fixed:
- Fixed incorrect processing of IGMPv3 requests with a large number of groups in IGMP Proxy;
- Fixed the bug of incorrect mirroring after changing the skill in the stack;
- The error of incorrect polling of the table "1.3.6.1.4.1.35265.35";
- Fixed incorrect interaction of L2PT with ERPS;
- Removed EAP-Message in the header in radius-request during MAC authorization;
- Fixed error updating lease time in the dhcp snooping table when renewing a lease in renewal timer;
- Fixed errors of incorrect work of PVST when changing to xSTP and vice versa or when disabling / enabling STP;
- Fixed error with the command no spanning-tree disable on portchannel;
- Fixed a bug leading to duplication of multicast traffic on an interface blocked by STP;
- Fixed bug with incorrect installation of speed 10 on devices with optical 1G interfaces;
- Fixed bug of incorrect operation of dot1x radius-attributes vlan;
- Fixed the bug of incorrect operation of Voice VLAN in conjunction with Dot1X;
- Fixed bug with incorrect traffic processing in Dot1X multi-session mode;
- Fixed a bug in the IP ACL assignment mechanism, leading to incorrect filtering in the absence of an IP header in the frame;
- Fixed processing errors for a large number of OSPF LSA;
- Fixed calculation of spanning-tree cost for port-channel;
- Fixed bug of incorrect traffic restriction by Storm-control in some situations;
- Fixed bugs with some SFP / SFP / QSFP modules;
- Improving the stability of devices.
Firmware Version 4.0.12.6
Added:
- Added syslog message for MAC address recorded as secure on another interface;
- Added support for IPv6-mac binding;
- Added support for DHCPv6 LDRA;
- Added support for DHCPv6 Relay agent;
- Added support for PVST bpdu flooding in instances where the protocol is disabled.
Fixed:
- Fixed RPF-check checking in MSDP;
- Fixed problem with copying MSDP configuration to tftp server;
- Fixed the problem with rebooting the switch when using a large number of MSDP groups;
- Fixed problem with OSPF neighborhood crash when changing the active STP port;
- Fixed a problem with the OSPF-neighbor crash when a large STP TCN flow arrives;
- Fixed problems with rebooting the switch when using PVST;
- Fixed L2PT operation as part of the switch stack;
- The compatibility problem with some models of sfp transceivers Huawei and ZTE has been fixed;
- Fixed a problem with releasing tcp connection when closing telnet / ssh sessions;
- Fixed the problem of redistributing static subnets in the second OSPF process;
- Fixed a problem with passing traffic of unauthorized clients in dot1x multi-session mode.
Firmware Version 4.0.12
Added:
- Added new functionality for BGP protocol:
- Added support for IP Prefix List functionality;
- Added support for Route Map functionality;
- Added support for Route Reflector functionality;
- Added support for BGP Peer Group functionality;
- Added support for Path MTU Discovery functionality for BGP connections;
- Added support for Multicast Address Family functionality;
- Added the ability to specify a name for a static route;
- Added functionality PIM Passive Interface;
- Added PIM Snooping functionality;
- Added the ability to display a list of MAC addresses for a specific interface via SNMP;
- Added functionality Flex Link;
- Added MSDP functionality;
- Added IGMP Static Groups functionality.
Fixed:
- Fixed a bug where the installation of snmp-server source-interface did not work;
- Fixed incorrect operation of traceroute functionality;
- Fixed bug with incorrect setting of OAM PDU Revision when receiving OAM RLB Request;
- Improving the stability of the device when rebuilding xSTP-tree;
- Fixed a bug leading to traffic loss when routing multicast traffic using the PIM protocol;
- Fixed errors when copying a startup configuration file from startup-config to running-config;
- Fixed a bug leading to incorrect calculation of the utilization of the LAG interface in the first 15 seconds of interface activity;
- Improved device stability.
Firmware Version 4.0.11.1
Fixed:
- Fixed the problem of DHCP snooping and SQinQ working together;
- Fixed a bug leading to incorrect operation of ERPS.
Firmware Version 4.0.11
Added:
- Added support for the licensing system. In the current version of the software, BGP functionality is licensed.
- Added support for the basic BGP functionality:
- Establishment of iBGP, eBGP sessions;
- Support for 32-bit AS;
- Support for limiting the number of accepted routes;
- Setting up substitution of Next Hop for your own (next-hop-self command);
- Announcing subnets with the network command;
- Announcement of routes of alternative routing protocols;
- Setting up timers;
- Added the ability to select the SSH server operation algorithms;
- Added the ability to select the size of the ICMP-ping packet;
- Added extended output of interface status in the show interfaces status command;
- Added functionality of Dot1x Guest VLAN;
- Added support for CFM functionality;
- Added the ability to change the state of the ERPS ring to the events propagation link failure / restore event and Continuity Check Protocol (CCM) connectivity violation in domain CFM MEP;
- Added the ability to optionally enable IP DHCP Snooping on separate physical interfaces;
- Added the ability to delete a single entry in IP DHCP Snooping Database;
- Added the ability to optionally clear the IP DHCP Snooping Database table when the interface crashes;
- Changed the format of the Hardware Address output in the show ip dhcp declined output;
- Added the ability to add VLANs received via GVRP protocol to the VLAN Database static table;
- Added the ability to configure SRC UDP Port in the IP DHCP Relay functionality;
- Added the ability to select a DHCP Relay server address for different VLANs;
- Increased the number of local accounts to 10;
- Added the ability to specify one interface as a stack;
- The location of the MNGM interface of the MES5324 switch in the SNMP table rlPhdPortsTable has been changed (row has been changed from 5 to 2);
- Added DDM mapping for individual 40G channels of MES5324 interfaces;
- Increased the maximum number of port channel to 48;
- Added the ability to enable half duplex on optical interfaces;
- Added the ability to optionally enable logging for the STP protocol;
- Implemented STP New root bridge event logging.
Fixed:
- IGMP requests that fall under the multicast snooping profile and max-groups restriction are sent to Uplink;
- The IGMP group is added to the igmp snooping table when there is no response from the RADIUS server;
- Fixed operation of the 802.1x multi-session functionality;
- Fixed error of incorrect reading of DDM for DWDM modules;
- The error of the system buffer overflow when using the IP IGMP-Proxy functionality has been fixed, which has caused the services that send traffic from the CPU to freeze;
- The error of the system buffer overflow when using the IP PIM functionality was fixed, in which part of the MC groups are not added to the ip mroute table;
- Fixed a bug where the timer for rebuilding the STP tree was not reset;
- The error of rebuilding the STP tree when adding VLAN to the port is fixed;
- The error when turning on ip dhcp snooping has been fixed, which leads to a reboot of the backup unit on the stack;
- Fixed conflicts of column / row numbers and interface indices for SNMP tables ifTable and rlPhdUnitStackPortTable;
- Fixed the error of the endless output of the show green-ethernet command;
- Fixed incorrect STP shutdown on ports in PVST mode;
- Improved device stability.
Firmware Version 4.0.10.1
Fixed:
- Fixed the bug of incorrect operation of the STP Last Topology Change timer;
- Fixed bug of unstable operation of PVST +;
- Fixed a bug in the operation of the PIM protocol, in which more than 120 Multicast groups were not stably processed;
- Improved device stability
Frimware Version 4.0.10
Added:
- Added the ability to specify a name as the server address in the Backup functionality;
- Added DHCP Relay support within the same VLAN;
- The PoE functionality has been improved, when the wizard reboots in the stack, the power on the slave ports does not turn off;
- Added the ability to send IGMP Query Specific only to ports according to the IGMP Snooping table;
- Added the ability to clear the MAC table by VLAN number;
- Added the ability to simultaneously enable DHCP Relay and DHCP Server;
- Added the ability to force close control sessions on the switch side;
- Added the ability to bind ACL / Policy on Output interfaces;
- Added switch IP and client MAC templates for Circuit-id in PPPoE IA and DHCP Snooping;
- Added output of Threshold parameters of SFP transceivers;
- Added support for VLAN and ACL assignment for 802.1x functionality;
- Added PVST + functionality;
- Added the ability to view the VLAN ID in the output of the show interfaces description command;
- Added support for responding VRRP IP addresses to ICMP requests;
- Added setting of TCP SYN and Multicast traffic limiters on the CPU;
- Implemented PIM, OSPF neighborhood logging.
Fixed:
- The error of duplication of the DHCP request, when using DHCP Relay and DHCP Snooping;
- Fixed a bug that caused the device to freeze when connected via SSH;
- Fixed a bug leading to the failure of the Backup functionality;
- Fixed a bug leading to duplication of OAM functionality log messages;
- Restored OSPF route summarization;
- Fixed display of LSA in OSPF Databse;
- Fixed a bug where DHCP Option 82 was removed by the switch on Trust ports;
- Fixed a bug leading to routing failure;
- Fixed incorrect operation of the Proxy-Report functional;
- Fixed a bug that caused the device to freeze when deleting IGMP-Proxy VLAN;
- Fixed a bug leading to the OSPF neighborhood crash when viewing the configuration if MSTP is configured;
- Fixed a bug leading to the OSPF neighborhood crashing while saving the configuration;
- Fixed a bug leading to the fall of OSPF neighborhood when downloading software from a TFTP server;
- Fixed a bug leading to the fall of OSPF neighborhood with minimum dead-interval values;
- Fixed a bug that caused the SFP transceiver laser to turn off when the switch reboots on the opposite side;
- Fixed a bug leading to a storm in the STP ring when viewing the status of active ports in STP;
- Fixed a bug that caused the device to freeze when rebuilding STP;
- Fixed a bug where the LACP was not broken, even if the neighbor did not respond;
- Improved device stability.
Firmware Version 4.0.9.3
Added:
- Added the ability to balance MPLS traffic for LAG groups.
- Fixed:
- Fixed bug with incorrect cleaning of the MAC address table;
- Fixed a bug leading to loss of traffic when rebuilding the ERPS ring;
- Fixed a bug leading to the study of MAC addresses when using MAC ACL and PPPoE IA together.
Firmtware Version 4.0.9
Added:
- Added functionality for resetting interface settings;
- Added DNS Resolver functionality;
- Added support for ECMP technology;
- Added the ability to configure CoS and DSCP for IGMP Proxy functionality;
- Added the ability to set IP addresses with prefixes 31 and 32 on the VLAN interface;
- Added IP Unnumbered functionality;
- Added support for L2protocol-tunnel technology for ports in Trunk and General modes;
- A command has been added to configure the SPF calculation delay, and the LSA Throttling OSPF protocol settings have been implemented;
- Increased the number of ACLs used on interfaces;
- Added PIM DM functionality;
- Added support for MVR functional collaboration in conjunction with PIM;
- Added the ability to redirect the output of Show commands to a file on Flash-memory;
- Removed the display of device ports that are not in the stack.
Fixed:
- The readings of the OOB port counters were incorrectly displayed;
- Port-Channel interface speed displayed incorrectly;
- The source MAC address was studied in the switching table when it fell under the prohibit rule ACL;
- Loss of traffic when updating an ARP table;
- Errors while loading the configuration in startup-config;
- Incorrect display of some configuration entries in show running-config;
- DHCP Server issued Default Gateway from another pool;
- The L2 Protocol Tunnel functionality for LACP did not work;
- With some probability, the Gi0 / 3 port did not rise after rebooting the MES2348B device;
- Loopback SNMP tables
- Simultaneous operation of PIM and MVR;
- Some timer-sensitive services may have been rebuilt during configuration output;
- Incorrect display of PSE temperature in show power-inline;
- Incorrect display of the slot number and interface number in the PoE ladders for the stack of several PoE devices;
- Incorrect operation of the acceptable-frame-type untagged-only functionality in conjunction with PPPoE IA;
- The selective-qinq list ingress add_vlan rule stopped working;
- Traffic interception on the CPU in the presence of a static route;
- Spanning-tree cost setting on Port-Channel was not applied;
- Improved software stability.
Firmware Version 4.0.8.3
- Bugs fixed;
- Improved stability.
Firmware version 4.0.8.2:
- Added Media-Type settings for combo ports;
- Added monitoring (logging+trap) and thresholds of RAM and CPU utilization, fan rates (if there are ones) and temperature;
- Added "load average" setting for a Port-channel;
- Added management of unknown multicast traffic filtering per VLAN;
- Added proxy-report mode for static multicast groups;
- The default values of service cpu-rate-limits have been changed for telnet and ssh (extended to 512pps);
- Added DHCP Option 82 Remote-ID setting as a user defined pattern as a line;
- The quantity of management sessions has been extended to 5;
- Extended "show snmp" displaying, added information on the status of all types of traps;
- Added displaying of the interface from which "last topology change STP" has been transmitted;
- Added displaying information on port blocking via Root/Loop Guard to "show spanning tree" output;
- Added configuration of DHCP server options 176, 242;
- Improved settings for all DHCP server options;
- Extended the number of characters of verification key for SNTP (to 32);
- Added displaying of QoS statistics on all queues per interface;
- Added packet counters per VLAN;
- Added opportunity to name vlan via vlan database;
- Added mode with extended number of configurable ACL UDB;
- The displaying of "show" commands has been limited according to ports of units in stack;
- Added option to switch off logging of management ACL;
- Added option to utilize the same names in the ACL/Policy map;
- Added opportunity to test copper cable by an unprivileged user;
- Added option to configure the quantity of unsuccessful authentication attempts before the session ends;
- The displaying of DDM parameters of SFP modules has been extended;
- The indication of Poe is displayed in Unit ID for MES2308P;
- Added option for LLDP TLV transmission: IEEE 802.3 Power Via MDI (RFC 3621).