Dynamic Link Aggregation on Alcatel Lucent

Specifically, how to remove a dynamic linkagg from an Alcatel 6900 switch.

First take a look at the linkagg:

BR-02-> show linkagg

Number  Aggregate     SNMP Id   Size Admin State  Oper State     Att/Sel Ports
-------+-------------+---------+----+------------+--------------+-------------
 127     Dynamic      40000127  16   ENABLED     DOWN            1   1

Now disable the linkagg:

BR-02-> linkagg lacp agg 127 admin-state disable

Then remove the ports currently in the dynamic linkagg (for me it was just one port - 2/12):

BR-02-> no linkagg lacp port 2/12

You then should be able to remove the linkagg entirely:

BR-02-> no linkagg lacp agg 127

However, like me, you may see the following error:

BR-02-> no linkagg lacp agg 127
ERROR: Aggregate has Service config

Take a look through your config for any auto-generated lines related to the linkagg group.

BR-02-> wr t | grep linkagg

linkagg static agg 1 size 2 admin-state enable

linkagg lacp agg 127 size 16 admin-state disable

linkagg lacp agg 127 actor admin-key 65535

spb isis interface linkagg 127

In my case I had to remove that last line:

BR-02-> no spb isis interface linkagg 127

And then repeat the linkagg removal command:

BR-02-> no linkagg lacp agg 127