Change algorithm on port share


Userlevel 2
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I have a port share created with custom lacp and need to change it to l2 lacp. Do I need to disable sharing and recreate it or can I change the algorithm without disabling the share?

If I have to disable the share, will that affect all the vlans it is a member of?

3 replies

Userlevel 6
You do need to disable the share group and remake it in order to make any changes. The config port will retain it's VLAN assignment while the other ports will not. The bigger problem is that LACP requires both ends to communicate with each other. When you disable the share group the other side will remove the ports from the aggregator. This change is best done during a MW.
Userlevel 2
The new switch is configured as custom and is not in use yet so I can change it. I just wanted to make sure I didn't lose the vlan assignments when I disable the share. For some reason I thought when the share was created it removed all settings from the master port.
Userlevel 3
As Patrick mentioned, we need to disable the sharing group, please check the below lab output for your reference:

* A2:U34.23 # sh sharing
Load Sharing Monitor
Config Current Agg Min Ld Share Ld Share Agg Link Link Up
Master Master Control Active Algorithm Group Mbr State Transitions
================================================================================
1 LACP 1 L2 1 - R 0
L2 2 - R 0
================================================================================
Link State: A-Active, D-Disabled, R-Ready, NP-Port not present, L-Loopback
Minimum Active: (<) Group is down. # active links less than configured minimum
Load Sharing Algorithm: (L2) Layer 2 address based, (L3) Layer 3 address based
(L3_L4) Layer 3 address and Layer 4 port based
Number of load sharing trunks: 1

* A2:U34.24 # enable sharing 1 grouping 1,2 algorithm address-based L2 lacp
Error: Master Port (1) is already in another Load Sharing group(1).

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