Configuring Link Aggregation

This section provides details for the configuration of link aggregation on the S- K- and 7100-Series products.

Default Link Aggregation Parameters lists link aggregation parameters and their default values.

Default Link Aggregation Parameters

Parameter	Description	Default Value
LACP State	Current state of LACP on the device.	Enabled
System Priority	LACP system priority for this device.	32768
Port Key	The Port Administrative Key (also referred to as operational key).	32768
Port Priority	Determines which ports move to the attached state when ports of different speeds form a LAG. Also determines which ports join a LAG if the ports available exceed the number of ports supported by the device.	32768
Single Port State	Allows or disallows a LAG to be created with a single port.	Disabled (disallows creation of a single port LAG)
LACP Port Active State	Port state providing for transmission of LACP PDUs.	Disabled
LACP Port Timeout State	Port state determining the frequency of LACP PDU transmission and period before declaring the partner LACP port down if no response is received.	30 second: frequency of LACP PDU transmission 90 seconds: period before declaring the partner port down

Configuring Link Aggregation describes how to configure link aggregation.

Configuring Link Aggregation

Step	Task	Command(s)
1	In switch command mode, enable LACP on the device.	set lacp {disable | enable}
2	Optionally, change the system priority for the device.	set lacp asyspri value
3	Optionally, change the administratively assigned key for each aggregation on the device.	set lacp aadminkey port-string value
4	Optionally, enable single port LAGs on the device.	set lacp singleportlag {enable | disable}
5	Optionally, enable port active state for all LAG participating ports and modify the LAG port parameters. See LAG Port Parameters for a description of port parameters.	set port lacp port port-string {[aadminkey aadminkey] [aportpri aportpri] [padminsyspri padminsyspri] [padminsysid padminsysid] [padminkey padminkey] [padminportpri padminportpri] [padminport padminport] [aadminstate {lacpactive | lacptimeout | lacpagg | lacpsync | lacpcollect | lacpdist | lacpdef | lacpexpire}] [padminstate {lacpactive | lacptimeout | lacpagg | lacpsync | lacpcollect | lacpdist | lacpdef | lacpexpire}] [enable | [disable]}
6	Optionally, change how flows behave when a port joins or is removed from a LAG (S-, K-Series).	set lacp flowRegeneration {enable | disable}
7	Optionally, change the out-port behavior for flows over the LAG. The round-robin algorithm is supported on the S- and K-Series platforms.	set lacp outportAlgorithm {dip-sip | da-sa | round-robin}
8	Optionally, assign static ports to a LAG when the partner device only supports a non-LACP method of aggregation.	set lacp static lagportstring [key] port-string

Managing Link Aggregation describes how to manage link aggregation.

Managing Link Aggregation

Task	Command
Reset LACP to the default state of enabled.	clear lacp state
Reset LACP system priority or admin key settings to the default values.	clear lacp {[asyspri] [aadminkey port-string]}
Remove specific static ports from an aggregation.	clear lacp static lagportstring port-string
Reset the single port LAG feature to the default value of disabled.	clear lacp singleportlag
Reset a link aggregation port setting to the default value for one or more ports. See LAG Port Parameters for a description of port parameters.	clear port lacp port port-string {[aadminkey] [aportpri] [padminsyspri] [padminsysid] [padminkey] [padminportpri] [padminport] [aadminstate {lacpactive | lacptimeout | lacpagg | lacpsync | lacpcollect | lacpdist | lacpdef | lacpexpire | all}] [padminstate {lacpactive | lacptimeout | lacpagg | lacpsync | lacpcollect | lacpdist | lacpdef | lacpexpire | all}]
Reset the LACP flow regeneration setting to its default value of disabled (S-, K-Series).	clear lacp flowRegeneration
Reset the LACP out-put algorithm setting to its default value of DIS-SIP.	clear lacp outportAlgorithm

Displaying Link Aggregation Information and Statistics describes how to display link aggregation information and statistics.

Displaying Link Aggregation Information and Statistics

Task	Command
Display the global LACP enable state, or display information about one or more aggregator ports.	show lacp [state | port-string]
Display the status of the single port LAG function.	show lacp singleportlag
Display link aggregation information for one or more underlying physical ports.	show port lacp port port-string {[status {detail | summary}] | [counters]} [sort {port | lag}]
Display LACP flow regeneration state (S-, K-Series).	show lacp flowRegeneration
Display the current configured out-port algorithm.	show lacp outportAlgorithm