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Author Topic: ERS4500 Stack limits  (Read 2309 times)

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Offline darkfader

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ERS4500 Stack limits
« on: September 04, 2016, 03:31:04 PM »

we've built a stack of 6 ERS4500 switches. This stack is connected to multiple switches in other closets. Those are not Avaya switches, so we strictly used 802.3ad for the trunking.

We wanted to use a 2-port trunk per remote switch.

In "2008_09_24_LACP_802_3ad_and_VLACP_for_ES_and_ERS_TCG_J_Vant_Erve_NN48500502.pdf" I've found a notice that says a ERS4500 can handle 6 LAGs.

"ERS4500 Yes
• 6 Link Aggregation Groups
o Maximum of 4 active links
are support per LAG No"

What I'm now wondering is if the same limit applies on a stack, or if the stack will be able to handle 6x6 groups.

Any ideas?

Offline Dominik

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Re: ERS4500 Stack limits
« Reply #1 on: September 06, 2016, 04:22:18 PM »
The maximum number of configurable MALts / LAGs stays the same in a stack.

With a SW upgrade you can increase this number.

In SW release 5.6.x you can do up to 32 LAGs with a maximum of 8 active Links:


Itīs always the networks fault!

Offline darkfader

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Re: ERS4500 Stack limits
« Reply #2 on: September 06, 2016, 04:25:02 PM »
Thank you very much.

Will look into it in more detail tomorrow, I think we have upgraded all switches to a 5.6 release already.
Very glad to know this!