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 capacitiescommand 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
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.
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:
8320 and 8325 series switches (32 ports): 31
8320 series switches (48 ports of 1/10GbE (SFP/SFP+ and 10GBASE-T) and 6 ports of 40GbE): 53
8325 series switches (48 ports of 1GbE/10GbE/25GbE (SFP/SFP+/SFP28) and 8 ports 40GbE/100GbE (QSFP+/QSFP28): 55
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