interface lag multi-chassis

Syntax

interface lag <LAG-ID> multi-chassis [static]

no interface lag <LAG-ID>

Description

Configures a given LAG as a dynamic multichassis LAG (VSX LAG), which supports a maximum of four member links per switch segment. A VSX LAG across a downstream switch can have at most a total of eight member links.

The no form of this command removes a VSX LAG.

Command context

config

Parameters

<LAG-ID>: Specifies the LAG ID. Required. Run the show capacities command for the maximum number of VSX LAGs supported for your particular type of switch.
static: Specifies the multichassis LAG as static. Optional.

Authority

Administrators

Usage

A VSX LAG across a VSX pair can have at most a total of eight interfaces.

NOTE:

When creating a VSX LAG, select an equal number of member links in each segment for load balancing, such as four member links (one segment) and four member links (another segment). Do not create a VSX LAG with four member links in one switch and two member links on another segment. A switch can have a maximum of four member links.

You cannot change the mode of a multichassis LAG without removing the multichassis LAG first. To change a pre-existing VSX LAG to a static VSX LAG, first remove the VSX LAG with the no interface lag <LAG-ID> command. Then, enter the interface lag <LAG-ID> multi-chassis static command.

NOTE:

The maximum VSX LAG value considers that one port is used for ISL which is not a VSX LAG.

The maximum number of VSX LAGs supported is:

8400 series switches: 255

Examples

Configuring LAG 100 as a VSX LAG:

switch(config)# interface lag 100 multi-chassis

Removing LAG 100 as a VSX LAG:

switch(config)# no interface lag 100

Specifying LAG 100 as a static VSX LAG:

switch(config)# interface lag 100 multi-chassis static