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Author Topic: LACP Trunks on ERS5520 to Cisco 9372  (Read 1236 times)

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Offline rmorales

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LACP Trunks on ERS5520 to Cisco 9372
« on: September 08, 2016, 02:24:43 PM »
We are moving our core from 8600s to Cisco Nexus 9300 switches.  We are going to be moving our fiber connections on the ERS5520 to the Cisco 9372's.  We have MLT's setup on the 5520 switches.  Do I need to configure the trunks for LACP and would the configuration be the same as the LACP examples here on the site for the 5520?  Any help would be appreciated.  Thank you.


Offline jamesp1983

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Re: LACP Trunks on ERS5520 to Cisco 9372
« Reply #1 on: September 27, 2016, 10:04:01 AM »
I'm actually doing something very similar to this, but with a different Avaya model.

Did you ever find an answer?

Offline rmorales

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Re: LACP Trunks on ERS5520 to Cisco 9372
« Reply #2 on: September 27, 2016, 10:25:04 AM »
If your going to use ports that are part of a MLT and you want to configure LACP you have to disable the MLT then configure LACP on the Trunk ports.  Here is the LACP configuration I used.

config t
vlan ports 47,48 tagging tagAll
interface FastEthernet 47,48
 name "Cisco9372"
 lacp key 23
 lacp mode active
 lacp timeout-time short
 lacp aggregation enable
exit

Offline Telair

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Re: LACP Trunks on ERS5520 to Cisco 9372
« Reply #3 on: October 15, 2016, 05:13:56 PM »
Avaya's MLT is compatible directly with Cisco's Etherchannel technology if you wanted a simpler way to connect the two.  No need to change the Avaya side at all then and just a simple Etherchannel config on the Cisco side.