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6.9.
Link Aggregation
Link Aggregation (Trunking) is the grouping of physical ports into one logical higher-
capacity link. You may want to trunk ports if for example, it is cheaper to use multiple
lower-speed links than to under-utilize a high-speed, but more costly single-port link.
However, the more ports you aggregate then the fewer available ports you have. A trunk
group is one logical link containing multiple ports. The Switch supports both static and
dynamic link aggregation.
Note
: In a properly planned network, it is recommended to implement static link
aggregation only. This ensures increased network stability and control over the trunk
groups on your Switch.
6.9.1.
Static Trunk
6.9.1.1.
CLI Configurations
Node
Command
Description
enable
show link-aggregation
The command displays the current
trunk configurations.
enable
configure terminal
This command changes the node to
configure node.
configure link-aggregation [GROUP_ID]
(disable | enable)
The command disables / enables the
trunk on the specific trunk group.
configure link-aggregation [GROUP_ID]
load-balance (mac|ip)
The command configures the load
balance algorithm for the trunk
group.
configure link-aggregation [GROUP_ID]
interface PORTLISTS
The command adds ports to a
specific trunk group.
configure no link-aggregation [GROUP_ID]
interface PORTLISTS
The commands delete ports from a
specific trunk group.
Example:
L2SWITCH#
configure terminal
L2SWITCH(config)#
link-aggregation 1 enable
L2SWITCH(config)#
link-aggregation 1 ports 1-4