Known Behaviors

The following are limitations in ExtremeXOS system architecture that have yet to be resolved.

Table 1. Known Issues, Platform-Specific, and Feature Change Requests (CRs)
Defect Number Description
General
EXOS-27922 Beginning with ExtremeXOS 31.2, PTPv2 is not supported on X460-G2 and X670-G2 switches.
EXOS-28479 For ExtremeSwitching 5520 and 5420 series switches, inner tag dot1P is not examined with LAG.
EXOS-29242 Multihop EBGP sessions established over GRE tunnels configured in user VR do not appear when there are more than 5 sessions.
ExtremeSwitching 5420 Series Switches
EXOS-28685 Path MTU discovery and IP fragmentation does not work when a packet is L3 routed to a VPEX extended port on the ExtremeSwitching 5420 series switch controlling bridge platform. Other controlling bridges are not affected.
EXOS-28964 Due to limited RAM, the following warn logs are observed when attempting to install a summit-arm image in a 5420 or 5420 stack:
<Warn:EPM.Upgrade.State> Upgrade status Installation time may be greater than expected due to a lack of memory resources
<Warn:HAL.Sys.Warning> Switch low on Memory. OS KBytes total 1002660 free 4992. This can occur normally during image upgrade.
Extended Edge Switching
EXOS-29130 GRE Tunnel IPv4 traffic software gets forwarded if extended port is used in the tunnel transport VLAN.
SummitStacking
EXOS-28766 A file system corruption occurs when a USB clone tar saved with ExtremeXOS 31.3 is used for cloning by an ExtremeXOS or earlier release.

Workaround:

Upgrade the device to ExtremeXOS 31.3 before performing the clone.