Extreme Loop Recovery Protocol (ELRP) Enhancements

Extreme Loop Recovery Protocol (ELRP) is used to detect network loops in a Layer 2 network. After a loop is detected through ELRP, different actions can be taken, such as blocking certain ports to prevent loops or logging a messages to system log. ExtremeXOS 30.1 provides several enhancements to the ELRP feature:

The ability to select all VLANs when running one-shot ELRP.
Allows ELRP to detect loops between untagged ports on different VLANs on the same switch. You can then include or exclude the inter-VLAN loops to be disabled.
ELRP source MAC address is changed from "00:e0:2b:00:00:01" to “0e:Switch-MAC” to avoid MAC moves with other products such as EOS.

Supported Platforms

Summit X450-G2, X460-G2, X670-G2, and ExtremeSwitching X440-G2, X620, X690, X870 series switches.

New CLI Commands

configure elrp-client inter-vlan-loop-detection [on | off]

Changed CLI Commands

Changes are underlined.

configure elrp-client one-shot {vlan [vlan_name | all}ports [ports | all |none] {remote-endpoints vxlan all} {interval interval {seconds | milliseconds}} {retry count} {log | print | print-and-log]}

configure elrp-client disable-ports [exclude | include] [ ports | eaps-ring-ports | remote-endpoints vxlan | inter-vlan-loop]

The following show command now shows whether you have elected to exclude inter-VLAN ports: