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L
INK
A
GGREGATION
C
OMMANDS
4-149
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, the switches have to comply with the
Cisco EtherChannel standard. For dynamic trunks, the switches have to
comply with LACP. This switch supports up to six trunks. For example, a
trunk consisting of two 1000 Mbps ports can support an aggregate
bandwidth of 4 Gbps when operating at full duplex.
Table 4-42 Link Aggregation Commands
Command Function Mode Page
Manual Configuration Commands
interface port-channel Configures a trunk and
enters interface
configuration mode for the
trunk
GC 4-132
channel-group Adds a port to a trunk IC (Ethernet) 4-151
Dynamic Configuration Commands
lacp Configures LACP for the
current interface
IC (Ethernet) 4-151
lacp system-priority Configures a port's LACP
system priority
IC (Ethernet) 4-154
lacp admin-key Configures a port's
administration key
IC (Ethernet) 4-155
lacp admin-key Configures a port channel’s
administration key
IC (Port Channel) 4-156
lacp port-priority Configures a port's LACP
port priority
IC (Ethernet) 4-157
Trunk Status Display Commands
show interfaces status
port-channel
Shows trunk information NE, PE 4-140
show lacp Shows LACP information PE 4-158