User`s manual

User’s Manual 235
If an active port link goes down, the backup port with the highest priority replaces the downed link. If two or
more ports have the same LACP port priority, the port with the lowest physical port number is used as the
backup port.
Once the remote side of a link is established, LACP operational settings are in use on that side. Configuring
LACP settings for the partner only applies to its administrative state, not its operational state, and only takes
effect the next time an aggregate link is established with the partner.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#lacp actor port-priority 128
16.82 lacp system-priority
This command configures a port's LACP system priority. Use the no form to restore the default setting.
Syntax Description
lacp {actor | partner} system-priority priority
no lacp {actor | partner} system-priority
actor Use this to set the local side an aggregate link.
partner Use this to set the remote side of an aggregate link.
priority Use this to determine link aggregation group (LAG) membership, and to identify
this device to other switches during LAG negotiations. (Range: 0-65535)
Default
32768
Command Mode
Interface Configuration (Ethernet)
Usage Guidelines
You must configure the port with the same system priority to join the same LAG.
The system priority combined with the switch’s MAC address forms the LAG identifier. This identifier
indicates the specific LAG during LACP negotiations with other systems.
When the remote side of a link is established, LACP operational settings are in use on that side. Configuring
LACP settings for the partner only applies to its administrative state, not its operational state, and will only
take effect the next time an aggregate link is established with the partner.
Example
Console(config)#interface ethernet 1/5
Console(config-if)#lacp actor system-priority 3
Console(config-if)#