Port Trunking

How the Switch Lists Trunk Data

How the Switch Lists Trunk Data

Static Trunk Group: Appears in the menu interface and the output from the CLI show trunk and show interfaces commands.

Dynamic LACP Trunk Group: Appears in the output from the CLI show lacp command.

Interface Option

Dynamic LACP

Static LACP

Static Non-Protocol

 

Trunk Group

Trunk Group

 

 

 

 

 

Menu Interface

No

Yes

Yes

CLI show trunk

No

Yes

Yes

CLI show interfaces

No

Yes

Yes

CLI show lacp

Yes

Yes

No

CLI show spanning-tree

No

Yes

Yes

CLI show igmp

No

Yes

Yes

CLI show config

No

Yes

Yes

 

 

 

 

Outbound Traffic Distribution Across Trunked Links

The two trunk group options (LACP and Trunk) use source-destination address pairs (SA/DA) for distributing outbound traffic over trunked links. SA/DA (source address/destination address) causes the switch to distribute outbound traffic to the links within the trunk group on the basis of source/ destination address pairs. That is, the switch sends traffic from the same source address to the same destination address through the same trunked link, and may also send traffic from the same source address to a different destination address through the same link or a different link, depending on the mapping of path assignments among the links in the trunk. Likewise, the switch distributes traffic for the same destination address but from different source addresses through links depending on the path assignment.

11-27