Firmware update for MES2300-XX, MES3300-XX, MES3500I-10P, MES5312, MES53xxA, MES5300-xx, MES5305-48, MES5310-48, MES5400-XX, MES5410-48, MES5500-32. Version 6.6.9.3 R3
MES
15 October 2025
Firmware updates
The firmware and detailed description of the product capabilities are available in the Downloads or on the product page.
Firmware version: 6.6.9.3
Added
- Added support for LLDP TLV IEEE 802.3 Power Via MDI;
- Supported PIM protocol in VRF;
- Implemented command for displaying PSU information in CLI for PM160-220/12 (rev.B, C, D) and PM100-48x12 (rev.B);
- Implemented Priority-based Flow Control;
- Implemented IPv6 Traffic Class filtering in ACL;
- Implemented simultaneous S-VLAN and C-VLAN tag filtering for outgoing traffic on ports in TR-101 mode;
- Implemented IP Source Guard per VLAN functionality;
- Implemented SFTP protocol support for the backup function;
- Increased speed of working with MAC addresses when the MAC table is heavily utilized;
- Added SNMP Trap for stack link status change;
- Increased the number of DHCP Relay servers to 32;
- Supported stacking of MES2300-24P and MES2300-48P devices with each other;
- Implemented the ability to accept dynamic ACLs from the RADIUS server for Dot1x clients;
- Increased the number of PVST instances to 256;
- Implemented support for loopback detection on individual VLANs;
- Increased the number of authentication key characters for the SNTP protocol to 32 characters;
- Implemented SCP server functionality;
- Implemented replace config functionality;
- Implemented the ability to change the administrative distance for BGP in GRT and VRF;
- Increased the DHCP server limit for the number of static IP addresses to 1024;
- Increased the DHCP server limit on the number of IP addresses issued to 4096.
Fixed
- Fixed device rebooting during BFD session establishment when Unit ID 2 is the master;
- Fixed device freezing when rolling back candidate-config c with configured VRFs;
- Fixed false error message about fan operation;
- Fixed an error causing active ports in the VPC group to drop;
- Fixed an error displaying information about remote links added to the Port-Channel VPC group;
- Fixed an error related to traffic interception on the CPU when routing within a single VTEP;
- Fixed an error assigning a UDP port in BFD packets;
- Fixed an error where an EVPN Type 2 route was not created when a learned MAC address was present on the ESI-LAG port;
- Fixed a bug where the backup unit in the stack cyclically rebooted after a software update;
- Fixed a bug where disabled PoE was enabled on MES2300-24P rev.C1 after rebooting;
- Fixed a bug that caused interfaces to shut down spontaneously;
- Fixed a bug that occurred when copying files via SCP for an account without specifying a password;
- Fixed incorrect behaviour of DHCP Relay when PBR was enabled;
- Fixed incorrect behaviour of FDB for route-unknown traffic;
- Fixed a bug that occurred when saving settings to the running configuration when configuring via the web interface;
- Fixed a bug that occurred when restarting the OSPF process;
- Fixed a bug that occurred when assigning an IP address to the OOB interface from the default address network;
- Fixed a bug in selecting the root port in MSTP mode;
- Removed the carriage return character after each command in TACACS accounting;
- Fixed a bug when copying the snmp-server enable traps ospf configuration string in the CLI;
- Fixed a bug when entering the show ip route vrf X command with a non-existent VRF name.
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