HP Auto Port Aggregation Administrator's Guide for HP-UX 11i v1 and 11i v2 September 2008

• To manually configure ports with PPAs 6, 7, 8, and 9 into a link aggregate lan901, enter
the following command:
lanadmin -X -a 6 7 8 9 901
CAUTION: Be careful when using the -a suboption. This might lead to an invalid link
aggregate. This command gives you full control over forming any link aggregate that you
want. This example configures ports with PPAs 6, 7, 8, and 9 into a single link aggregate,
even if they are connected to different switches, which is an invalid configuration, and could
lead to problems.
• Before you can remove a port from an automatically formed link aggregate, you must turn
off Cisco's Fast EtherChannel or LACP protocol on that port. If a port with a PPA number
of 2 belongs to link aggregate lan900 (PPA number of 900), enter one of the following two
commands:
lanadmin -X -d 2 900
or
lanadmin -X -p 2 MANUAL 900
• To deconfigure FEC_AUTO (or LACP_AUTO) mode link aggregate 903, which has ports
with PPAs 6, 7, 8, and 9, enter the following commands in succession:
# lanadmin -X -p 6 MANUAL 903
# lanadmin -X -p 7 MANUAL 903
# lanadmin -X -p 8 MANUAL 903
# lanadmin -X -p 9 MANUAL 903
Alternatively, the following single command achieves the same result:
lanadmin -X -d 6 7 8 9 903
• To fully deconfigure a link aggregate, enter the following command:
lanadmin -X -c 903
IMPORTANT: Failure to fully deconfigure a link aggregate can result in some properties
being retained in the link aggregate. Subsequently, when you add new ports onto the link
aggregate, they might not aggregate properly.
• To delete a single port (for example, 8) from link aggregate 901, enter the following command:
lanadmin -X -d 8 901
To delete ports 6 and 9, enter:
lanadmin -X -d 6 9 901
• To deconfigure the link aggregate 901 completely, enter:
lanadmin -X -c 901
This deletes the remaining port, 7, from link aggregate 901 and clears all the properties from
the link aggregate; it becomes clean.
IMPORTANT: After you delete all the ports from link aggregate 901, (after using, for example,
lanadmin -X -d 7 901), use the -c suboption. Otherwise, some properties are retained
in link aggregate 901. Subsequently, when you add new ports to link aggregate 901, they
inherit old properties of the link aggregate and might not aggregate properly.
Configuring an FEC_AUTO Mode Link Aggregation using lanadmin
The following example works for all versions of 11i (link aggregate begins at 900).
58 Using the lanadmin Command