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Author Topic: ESM with Cisco cores  (Read 1984 times)

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Offline NetDaddy

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ESM with Cisco cores
« on: January 13, 2015, 11:08:56 AM »
Hello all,

I am fairly new to the Avaya/Nortel community.  In my current position i fell on top of a Nortel based network.  We had replaced our core devices (8600s) with Cisco Nexus 7Ks.  My question to you all; Is it still possible to discover the network topology if the seed IPs are that of Cisco devices?  I have played extensively with ESM trying to discover the network but have been unsuccessful.  I am assuming i will not be able to discover the topology since the Cisco cores are between ESM and my Nortel edge devices.  Any insight would be greatly appreciated. 

I am currently running ESM

Offline Dominik

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Re: ESM with Cisco cores
« Reply #1 on: January 13, 2015, 05:47:12 PM »
You are correct, the ESM can not discover the Cisco Nexus 7K.
You can put in all the IP adresses of your access switches as seed, so you could at least
use the ESM with an Cisco core.

The backround is that your Avaya switches uses the SONMP protocol to build up their autotopology table.
That is also the information database that the ESm is pulling from the switches to build the topology map. Your Cisco devices CDP instead of SONMP.

The ESM is replaced with the COM, that also can discover via LLDP, in the COm the Core switches would appear at least as legacy devices.

It´s always the networks fault!

Offline Řyvind Nikolaisen

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Re: ESM with Cisco cores
« Reply #2 on: January 14, 2015, 01:09:42 AM »
I would recommend that you replace ESM with COM. ESM doesn't have support for a number of newer devices and/or software versions running on them. The maps drawn up will look rather strange, with hubs shown on the map due to ESM limitations on interpreting ERS4800 switches.

However, if all you have is ERS4500/5500/5600, it will work - sort of...

Best regards,
Best regards,

Řyvind Nikolaisen
Senior Network Architect
NetNordic Communications AS
Avaya ACE Fx #204

Offline NetDaddy

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Re: ESM with Cisco cores
« Reply #3 on: January 14, 2015, 11:11:32 AM »
Thank you all for the timely response.  I kind of figured that would be the case.  Thanks again!