IBM 12.1(22)EA6 User Manual
24-13
Cisco Systems Intelligent Gigabit Ethernet Switch Modules for the IBM BladeCenter, Software Configuration Guide
24R9746
Chapter 24 Configuring EtherChannels and Layer 2 Trunk Failover
Configuring EtherChannels
The switch supports address learning only on aggregate ports even though the physical-port keyword
is provided in the command-line interface (CLI). The pagp learn-method and the pagp port-priority
interface configuration command have no effect on the switch hardware.
is provided in the command-line interface (CLI). The pagp learn-method and the pagp port-priority
interface configuration command have no effect on the switch hardware.
Note
You should not set the learn method to physical-port because the switch is an aggregate-learning
device.
device.
If the link partner to the switch is a physical learner that has the channel-group interface configuration
command set to auto or desirable, the switch automatically uses the load-distribution method based on
the source-MAC address, regardless of the configured load distribution method.
command set to auto or desirable, the switch automatically uses the load-distribution method based on
the source-MAC address, regardless of the configured load distribution method.
If the link partner to the switch is a physical learner that has the channel-group interface configuration
command set to on, set the load-distribution method based on the source-MAC address by using the
port-channel load-balance src-mac global configuration command.
command set to on, set the load-distribution method based on the source-MAC address by using the
port-channel load-balance src-mac global configuration command.
Configuring the LACP Port Priority
You can set the priority for each port in an EtherChannel that is configured for LACP by using the
lacp port-priority privileged EXEC command. The range is from 1 to 65535. Beginning in privileged
EXEC mode, follow these steps to configure the LACP port priority:
lacp port-priority privileged EXEC command. The range is from 1 to 65535. Beginning in privileged
EXEC mode, follow these steps to configure the LACP port priority:
Configuring Hot Standby Ports
When enabled, LACP tries to configure the maximum number of LACP-compatible ports in a channel,
up to a maximum of 16 ports. Only eight LACP links can be active at one time. Any additional links are
put in a hot standby state. If one of the active links becomes inactive, a link that is in hot standby mode
becomes active in its place.
up to a maximum of 16 ports. Only eight LACP links can be active at one time. Any additional links are
put in a hot standby state. If one of the active links becomes inactive, a link that is in hot standby mode
becomes active in its place.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
interface interface-id
Specify the interface for transmission, and enter interface configuration
mode.
mode.
Step 3
lacp port-priority priority-value
Select the LACP port priority value.
For priority-value, the range is 1 to 65535. By default, the priority value is
32768. The lower the range, the more likely that the interface will be used
for LACP transmission.
32768. The lower the range, the more likely that the interface will be used
for LACP transmission.
Step 4
end
Return to privileged EXEC mode.
Step 5
show running-config
or
show lacp channel-group-number
internal
internal
Verify your entries.
Step 6
copy running-config startup-config
(Optional) Save your entries in the configuration file.