Configuration Guide User guide

FastIron Configuration Guide 731
53-1002494-02
Displaying and determining the status of aggregate links
Displaying and determining the status of aggregate links
The show link-aggregate command provides the ability to view the status of dynamic links. You can
determine the status of ports that are members of an aggregate link, and whether LACP messages
are being transmitted between the ports.
The following section provides details about the events that can affect the status of ports in an
aggregate link and the status of LACP messages exchanged between the ports. Later sections
provide instructions for viewing these status reports.
Events that affect the status of ports in an aggregate link
Brocade devices can block traffic on a port or shut down a port that is part of a trunk group or
aggregate link when a port joins a trunk group and the port on the other end of the link shuts down
or stops transmitting LACP packets. Depending on the timeout value set on the port, the link
aggregation information expires. If this occurs, the Brocade device shuts down the port and notifies
all the upper layer protocols that the port is down.
Brocade devices can also block traffic on a port that is initially configured with link aggregation.
The port is blocked until it joins a trunk group. In this case, traffic is blocked, but the port is still
operational.
A port remains blocked until one of the following events occurs:
• Both ports in the aggregate link have the same key.
• LACP brings the port back up.
• The port joins a trunk group.
Displaying link aggregation and port status information
Use the show link-aggregate command to determine the operational status of ports associated
with aggregate links.
To display the link aggregation information for a specific port, enter a command such as the
following at any level of the CLI.
The command in this example shows the link aggregation information for port 1/1.
To display the link aggregation information for all ports on which link aggregation is enabled, enter
the following command at any level of the CLI.
Brocade#show link-aggregate ethernet 1/1
System ID: 00e0.52a9.bb00
Port [Sys P] [Port P] [ Key ] [Act][Tio][Agg][Syn][Col][Dis][Def][Exp] [Ope]
1/1 0 0 0 No L No No No No No No Ope