26-1

C
HAPTER
26
L
INK
A
GGREGATION
C
OMMANDS
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 12 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 26-1 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 25-2
channel-group Adds a port to a trunk IC (Ethernet) 26-3
Dynamic Configuration Commands
lacp Configures LACP for the
current interface
IC (Ethernet) 26-4
lacp system-priority Configures a port's LACP
system priority
IC (Ethernet) 26-6
lacp admin-key Configures a port's
administration key
IC (Ethernet) 26-7