Brocade 6910 Ethernet Access Switch Diagnostic Guide (Supporting R2.2.0.0) - Manual (Page 41)

Brocade 6910 Ethernet Access Switch Diagnostic Guide 31
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LACP trunking
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show lacp neighbors
Syntax: show lacp [port-channel] internal
port-channel - Local identifier for a link aggregation group. (Range: 1-5)
This command displays trunk information for configuration settings and the operational state for
the remote side.
Console# show lacp 1 neighbors
Port Channel 1 neighbors
-------------------------------------------------------------------------
Eth 1/ 1
-------------------------------------------------------------------------
Partner Admin System ID : 32768, 00-00-00-00-00-00
Partner Oper System ID : 32768, 00-12-CF-61-24-2F
Partner Admin Port Number : 1
Partner Oper Port Number : 1
Port Admin Priority : 32768
Port Oper Priority : 32768
Admin Key : 0
Oper Key : 3
Admin State: defaulted, distributing, collecting,
synchronization, long timeout,
Oper State: distributing, collecting, synchronization,
aggregation, long timeout, LACP-activity
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Configuration notes
• You cannot use 802.3ad link aggregation on a port configured as a member of a static trunk
group.
• When LACP dynamically adds or changes a trunk group, the show interface status port-channel
command displays the trunk as both configured and active. However, the show running-config
commands do not contain a trunk command defining the new or changed trunk group.
• You can enable link aggregation on 802.1q tagged ports that belong to more than one
port-based VLAN.
• Brocade recommends that you disable or remove the cables from the ports you plan to enable
for dynamic link aggregation. Doing so prevents the possibility that LACP will use a partial
configuration to talk to the other side of a link. A partial configuration does not cause errors,
but sometimes requires LACP to be disabled and re-enabled on both sides of the link to ensure
that a full configuration is used. It is easier to disable a port or remove its cable first. This
applies both for active link aggregation and passive link aggregation.
Trunk formation rules
When troubleshooting trunks, make sure the following rules for trunk formation have been
considered:
• Any number of ports between 2 and 12 within the same chassis can be used to configure a
trunk port.