ELRP Configuration - summitX-15.3.4.6-patch1-14.xos

[Dave_Smith]

When configuring ELRP, what if you include uplink ports in your VLAN statement, but then issue the disable- port exclusion command. Will excluding the uplink ports take precedence over them being added in the first place? Thanks in advance.

[Erik_Auerswald]

Hi,

if you add ELRP to the uplinks of all switches you will create a relatively high rate of flooded frames. You should limit ELRP on the uplinks to two switches in every L2 domain.

Thanks,
Erik

[Patrick_Voss]

This is the recommended way to configure ELRP. In an all EXTREME network it makes it easier to trace down where a loop is coming from. Even though the uplink is excluded from any action configured it will still log a loop and tell you which port it is ingressing and egressing out of.

[Patrick_Voss]

Hello Dave,

Sorry for the confusion. That is what I was implying. Exclude the uplinks in the disable ports list and they will not be disabled if a loop is found on them but they will still log a loop on that port.

[Dave_Smith]

correction - not disable the uplinks - should be remove those uplinks from the ELRP config.