The following are limitations in ExtremeXOS system architecture that have yet to be resolved.
Known Issues, Platform-Specific, and Feature Change Requests (CRs)
| CR Number | Description |
|---|---|
| General | |
| xos0075321 |
DNS cache entries are not removed even after TTL expiry. New cache entry creation is not affected since entries are removed whenever a new query is received for those addresses. However, this may make the DNS cache size unwieldy. Workaround: If the DNS cache become too large, use the
command clear dns cache to clear it.
|
| Extended Edge Switching | |
| xos0075684 | Neither show qosmonitor congestion nor show port congestion increments when there is egress congestion on a V300 bridge port extender port. Instead, you can view egress congestion using show ports rxerrors on the ingress port(upstream port in many cases). |
| Fabric Attach | |
| xos0076156 | When Fabric Attach authentication is configured on ports that are part of an MLAG, all ports on that MLAG must have the same Fabric Attach authentication configuration. |
| Insight for Guest Virtual Machines | |
| xos0075069 |
You cannot access the serial console before starting a VM. Workaround: You must start the VM, and then reboot it
to gain serial console access.
|
| xos0075388 | For ExtremeSwitching X465 series switches, having an SSD-120 device inserted increases the boot time by approximately 28 seconds. |
| xos0075211 |
With the Insight for guest virtual machines feature, compatibility issues may occur when using third-party OVA files. Workaround: Use the image format qcow2, since
it is generally more reliable.
|
| MAC Security (MACsec) | |
| xos0073350 |
Hot swapping LRM/MACsec Adapters is not supported. Workaround: MACsec must be disabled before a
corresponding LRM/MACsec Adapter is hot swapped.
|
| xos0076204 | LRM/MACsec Adapter initialization might take an extended amount of time—about 40–85 seconds per adapter, plus 15–35 seconds per transceiver depending upon the platform type used with the adapter. |
| Security | |
| xos0075074 | On ExtremeSwitching X440-G2 and X620 series switches, when DNS cache is enabled and operational on at least one VLAN, the nmap shows ports as open or filtered. |
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