Command Line Interface

4-180

4
Link Aggregation Commands
Ports can be statically grouped into an aggregate link (i.e., trunk) to increase the
bandwidth of a network connection or to ensure fault recovery. Or you can use the
Link Aggregation Control Protocol (LACP) to automatically negotiate a trunk link
between this switch and another network device. For static trunks, t he switches have
to comply with the Cisco EtherChannel standard. For dynamic trunks, the switches
have to comply with LACP. This switch supports up to four trunks. For example, a
trunk consisting of two 1000 Mbps ports can support an aggregate bandwidth of
4Gbps w hen operating at full duplex.
Table4-51 Link Aggregati on Commands
Command Function Mode Page
Manual Configuration Commands
interface port-channel Configures a trunk and enters interface
configuration mode for the trunk
GC 4-166
channel-group Adds a port to a trunk IC (Ethernet) 4-181
Dynamic Configuration Command
lacp Configures LACP for the current interface IC (Et hernet) 4-182
lacp system-priority Configures a port's LA CP system priority IC (Ethernet) 4-183
lacp admin-key Configures a port's administration key IC (Ethernet) 4-184
lacp admin-key Configures an port channel’s administration key IC (Port Channel) 4-185
lacp port-priority Configures a port's LACP port priority IC (Ethernet) 4-186
Trunk Status Display Command
show interfaces status
port-channel
Shows trunk information NE, PE 4-173
show lacp Shows LACP information PE 4-186