Comments on: LACP Configuration Examples (Part 1)

By: vereten0

vereten0 — Thu, 22 Jul 2010 14:39:30 +0000

Thanks Michael

By: FLyolic

FLyolic — Fri, 21 May 2010 14:06:12 +0000

Hi Michael!
I’m still use Nortel’s proprietary MLT/SMLT/SLT too. And it’s working fine on the Nortel’s switches.
But now i want to connect Cisco 2960 (and 3550) and Passport8600. And i trap one thing: on the Passport Switch i can add the VLAN`s on ports (which are joined by LAG) ONLY BEFORE joining ports!
How I can add the additional VLANs for the working LAG – ports on the Passport 8600 (with sw.3.7.17)?

By: Michael McNamara

Michael McNamara — Mon, 11 Jan 2010 23:51:10 +0000

Hi Rajesh,

All links that participate in a LAG (Link Aggregation Group) run the LACP protocol. Depending on how one of the links fails both switches will eventually discover the issue and move all traffic to the remaining working link(s).

Here’s a great write-up regarding LAG and LACP;
http://www.ieee802.org/3/ad/public/mar99/seaman_1_0399.pdf

Good Luck!

By: Rajesh Gupta

Rajesh Gupta — Mon, 11 Jan 2010 12:24:04 +0000

Hi,

I have a query regarding LACP. Suppose we want our configuration to be dynamic and we take out the active port abruptly then what all actions will be taken and how the other link will come to know about the topology change.

Regards
Rajesh

By: Michael McNamara

Michael McNamara — Sat, 19 Dec 2009 15:26:21 +0000

Hi Tim,

Thanks for taking the time to stop by… I’m happy to hear you’ve found the site useful.

I certainly hope to provide continuing coverage of Nortel/Avaya products and solutions but I’ll also start covering Cisco as I start working with the Nexus product line.

Cheers!

By: TimJ

TimJ — Fri, 18 Dec 2009 22:31:03 +0000

Your website is fantastic… I don’t get here often enough, but when I do there’s always something of use on it for me. I hope you continue to post information and content as Nortel makes its transition.

By: Michael McNamara

Michael McNamara — Fri, 21 Aug 2009 22:45:42 +0000

Hi Bill,

Great question…

I still personally use Nortel’s proprietary MLT/SMLT/SLT between Nortel switches. The purpose of the article was to provide examples of how to configure LACP (802.3ad) on Nortel switches in the event that you need to connect to a non-Nortel switch via 802.3ad LACP. In the examples I just used two Nortel switches so I could cover both the Passport series (Ethernet Routing Switch 8600) and the BayStack series (Ethernet Switch 460, 470, Ethernet Routing Switch 5500, 5600 series) but they could have easily been a Cisco 3750 or a HP GbE2c or a Cisco 3120. I hope to provide additional examples covering a few of the different switches I just mentioned. Hopefully that answers your question.

Thanks for the comment!

By: Bill McDonald

Bill McDonald — Fri, 21 Aug 2009 21:03:51 +0000

Why did you use LACP instead of just SMLT’s?

By: svl0r

svl0r — Tue, 18 Aug 2009 15:42:45 +0000

Nice tut.