Installation manual

4-199
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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 eight trunks. For example, a trunk consisting of two
1000 Mbps ports can support an aggregate bandwidth of 4 Gbps when operating at full
duplex.
Private VLAN
host-association
Shows the secondary (or community) VLAN with which this port is associated
(4-261).
Private VLAN mapping Shows the primary VLAN mapping for a promiscuous port (4-262).
802.1Q-tunnel Status Shows if 802.1Q tunnel is enabled on this interface (page 4-251).
802.1Q-tunnel Mode Shows the tunnel mode as Normal, 802.1Q Tunnel or 802.1Q Tunnel Uplink
(page 4-252).
802.1Q-tunnel TPID Shows the Tag Protocol Identifier used for learning and switching packets
(page 4-253).
Table 4-52 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 4-186
channel-group Adds a port to a trunk IC (Ethernet) 4-200
Dynamic Configuration Command
lacp Configures LACP for the current interface IC (Ethernet) 4-201
lacp system-priority Configures a port's LACP system priority IC (Ethernet) 4-202
lacp admin-key Configures a port's administration key IC (Ethernet) 4-203
lacp admin-key Configures an port channel’s administration key IC (Port Channel) 4-204
lacp port-priority Configures a port's LACP port priority IC (Ethernet) 4-205
Trunk Status Display Command
show interfaces status
port-channel
Shows trunk information NE, PE 4-194
show lacp Shows LACP information PE 4-206
Table 4-51 show interfaces switchport - display description (Continued)
Field Description