Firmware update for MES2310-12XU, MES2300-xx, MES3300-xx, MES3500I-08P, MES3500I-10P, MES3500I-8P8F, MES3500I-24F, MES5312, MES5316A, MES5324A, MES5332A, MES5300-24, MES5300-48, MES5305-48, MES5310-48, MES5320-24, MES5400-24, MES5400-48, MES5410-48, MES5500-32, MES5700-32. Version 6.6.13.5

15 October 2026

Firmware update

Version: 6.6.13.5

The firmware and detailed description of the product capabilities are available in the Downloads or on the product page.

Added

  • Support for DHCP option 242 has been implemented;
  • The maximum number of ERPS sub-rings has been increased to 32;
  • Support for Priority-based Flow Control on 400G ports has been implemented;
  • Stacking is now supported between MES3300-24, MES3300-24F, MES3300-48, and MES3300-48F devices.

Fixed

  • Fixed a bug that caused the static MAC entry on the peer-link to be deleted after a device in a VPC pair was rebooted;
  • Fixed a bug that caused the device to reboot when a special character was handled incorrectly during an SSH connection;
  • Fixed a bug that caused the device to reboot when clients with dACL were re-authenticated;
  • Fixed the incorrect display of the system description in a stack made up of switches with different numbers of ports;
  • Fixed the incorrect update of a VXLAN tunnel built over a route with a prefix other than /32;
  • Fixed link flapping and false link-up events on ports with FT-SFP-FX-155-13-2-D-I transceivers;
  • Fixed a bug when loading into the candidate-config a configuration file containing the command no snmp-server enable traps ospf;
  • Fixed a bug when applying SNMPv3 user settings using the commit/confirm mechanism.

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