37-20
Catalyst 2975 Switch Software Configuration Guide
OL-19720-02
Chapter 37 Configuring EtherChannels and Link-State Tracking
Displaying EtherChannel, PAgP, and LACP Status
To return the LACP port priority to the default value, use the
no lacp port-priority
interface
configuration command.
Displaying EtherChannel, PAgP, and LACP Status
You can clear PAgP channel-group information and traffic counters by using the
clear pagp
{
channel-group-number
counters
|
counters
} privileged EXEC command.
You can clear LACP channel-group information and traffic counters by using the
clear lacp
{
channel-group-number
counters
|
counters
} privileged EXEC command.
For detailed information about the fields in the displays, see the command reference for this release.
Understanding Link-State Tracking
Link-state tracking, also known as trunk failover, is a feature that binds the link state of multiple
interfaces. For example, link-state tracking provides redundancy in the network when used with server
NIC adapter teaming. When the server network adapters are configured in a primary or secondary
relationship known as teaming, if the link is lost on the primary interface, connectivity is transparently
changed to the secondary interface.
Note
An interface can be an aggregation of ports (an EtherChannel), or a single physical port in access or trunk
mode.
Step 5
show running-config
or
show lacp
[
channel-group-number
]
internal
Verify your entries.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.
Command
Purpose
Table 37-4
Commands for Displaying EtherChannel, PAgP, and LACP Status
Command
Description
show etherchannel
[
channel-group-number
{
detail
|
port
|
port-channel
|
protocol
|
summary
}] {
detail
|
load-balance
|
port
|
port-channel
|
protocol
|
summary
}
Displays EtherChannel information in a brief, detailed, and
one-line summary form. Also displays the load-balance or
frame-distribution scheme, port, port-channel, and protocol
information.
show pagp
[
channel-group-number
] {
counters
|
internal
|
neighbor
}
Displays PAgP information such as traffic information, the
internal PAgP configuration, and neighbor information.
show pagp
[
channel-group-number
]
dual-active
Displays the dual-active detection status.
show lacp
[
channel-group-number
] {
counters
|
internal
|
neighbor
}
Displays LACP information such as traffic information, the
internal LACP configuration, and neighbor information.
