Configuring LAG to servers and switches - ERS4548GT

[bdillard]

From the manual I THINK but don't know MLT is avaya 4500 to 4500 and LACP is industry default for LAG?

Say for example on the first switch in the stack, I wanted to connect ports 1 and 2 into a dell server that is configured for LAG. What are the commands I need to run on the switch?

Likewise if I want to run a couple of cables between two ERS4548GTs that are two far apart to use the links in the back, how do I configure ports 47 and 48 to link to ports 47 and 48 on the other switch in a lag or MLT (not sure what it should be).

[mneumann]

Pls try this:

https://support.avaya.com/css/P8/documents/100134063

[bdillard]

Thanks -
if anyone could give me the command for setting up a lag on the first switch in the stack, I want to connect ports 1 and 2 into a dell server that is configured for LAG.

[sidneyd]

MLT or DMLT is a statically configured Link Aggregation Group; it is typically used for Avaya (Nortel) to Avaya switches; but cn also be used to other devices if you can configure LAG (802.3ad) to static mode.


As to how to configure LAGs on an Avaya switch, here is an example with 4526T-PWR+ which will be same as your 4548GT.

4526T-PWR+> ena
4526T-PWR+# config t
Enter configuration commands, one per line. End with CNTL/Z.
4526T-PWR+(config)# interface fastEthernet 25-26
4526T-PWR+(config-if)# lacp key 2
4526T-PWR+(config-if)# lacp mode active
4526T-PWR+(config-if)# lacp timeout-time short
4526T-PWR+(config-if)# lacp aggregation enable
4526T-PWR+(config-if)# exit

When the LAG is operational issue the 'show lacp aggr'

4526T-PWR+(config)# show lacp aggr
Aggr ID Trunk Status Type Members
------- ----- -------- ------ -------------------
8224 32 Enabled LA 25-26



Then show mlt to display the MLT configuration (LAGs dynamically use MLT IDs from 32 downwards as LAGs are dynamically formed). In this case you will see MLT 32 is used and that by default the hashing is set to basic.


4526T-PWR+(config)# show mlt 32
Id Name Members Bpdu Mode Status Type
-- ---------------- ---------------------- ------ -------------- ------- ------
32 Trunk #32 25-26 Single DynLag/Basic Enabled Access

4526T-PWR+(config)# mlt 32 loadbalance adv
4526T-PWR+(config)# show mlt 32
Id Name Members Bpdu Mode Status Type
-- ---------------- ---------------------- ------ -------------- ------- ------
32 Trunk #32 25-26 Single DynLag/Advance Enabled Access
4526T-PWR+(config)#
Also if you show this in EDM, you can see it used MLT#32

Sidney