ExtremeXOS 22.5.1 is now available!

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  • Announcement
  • Updated 3 weeks ago

Hello community,
We are pleased to announce the availability of the EXOS 22.5.1 release. Several significant features/capabilities have been made available in this release, including: 
The release also includes a number of service and customer feature enhancements.

Customer-Related Enhancements
  • RSTP over MLAG (p9)
        Rapid Spanning Tree Protocol (RSTP) can now be configured on MLAG peers (as well as connected access switches) to help prevent loops within an MLAG topology
  • ALPM mask improvements (p10)
        Enhanced IPv6 route support when using mask lengths between 64 and 128
  • BOOTP Relay over L3VPN (p9)
        BOOTP Relay can now be enabled over VRFs and VPN-VRFs
  • CDP Voice VLAN tag in every packet (p9)
        Cisco Discovery Protocol (CDP) Voice VLAN tags are now enabled by default for all CDP packets
Service Related Enhancements
For more information on these as well as all the other new features in EXOS 22.5.1, please refer to the EXOS Software Release Notes.  

Availability and Platform Support
EXOS 22.5.1 was released on May 29, 2018 and is supported on the following switching platforms: 
  • X440-G2 Series
  • X450-G2 Series
  • X460-G2 Series
  • X620 Series
  • X670-G2 Series
  • X690 Series
  • X770 Series
  • X870 Series
Additional Helpful Resources
ExtremeXOS® 22.5 Software Images & Documentation

EXOS Software Images
Available for partners and customers on the Extreme Portal:
EXOS Documentation
ExtremeXOS 22.5 User Guide:

ExtremeXOS 22.5 Command Reference Guide:

ExtremeXOS Feature License Requirements:

ExtremeXOS 22.5.1 Release Notes:
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Drew C., Community Manager

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Posted 5 months ago

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Terren Crider

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Will this be the recommended release for the X440-G2 and X460-G2 platforms?

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Drew C., Community Manager

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Hi Terren,
It likely will eventually be listed as the recommended release, but keep in mind the criteria listed at the top of the page there.
The recommendation for Most Stable Release is based on the following criteria:

  • Recommended releases should have no open critical issues introduced in the respective version.
  • Recommended releases should have been deployed in the field for at least three months. As an exception, the latest release would be recommended if critical fixes affecting existing deployment were added to the release.
  • Internal SQA testing must be completed without encountering any new issues.
  • Recommended releases should have been reviewed and accepted by Engineering team leads.
The recommended Latest Feature Release is typically the newest EXOS release. It contains the latest set of features and is fully supported; however, it does not yet have a history of evaluation in the field that is as extensive as the Most Stable Release.

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Bin, Employee

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Thank you for the information ! 
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M.Nees, Embassador

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Thanks for Posting!
Offers long waited options and functionality!

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STP via MLAG is good, but not good implemented.In XOS 22.1? MSTP was implemented for easier STP configuration, without need of untagged vlan on STP-enabled port...If you wan't to use STP and MLAG you need to go back to to RSTP and need to configure a untagged vlan on interswitch-links... I don't understand, why going this way...
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James A, Embassador

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Well, they added MSTP over MLAG in 22.6.

Is there any reason 22.5 got an announcement post but 22.6 didn't?
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Drew C., Community Manager

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The day I was going to post the 22.6 announcement is the day our community host was having problems. I'll see if I can get it posted today.