Configuring Multichassis Etherchannels - Cisco Catalyst 4500 Series Software Configuration Manual

Configuring a VSS
Command
Switch(config)# switch virtual domain domain_id
Switch(config-vs-domain)# mac-address use-virtual
Switch(config-vs-domain)# mac-address mac-address
Switch(config-vs-domain)# mac-address chassis

Configuring Multichassis EtherChannels

Configure multichassis EtherChannels (MECs) as you would for a regular EtherChannel. The VSS will
recognize that the EtherChannel is an MEC when ports from both switches are added to the
EtherChannel. You can verify the MEC configuration by entering the show etherchannel command.
One VSS supports a maximum of 256 port channels.
To configure Layer 3 Multichassis EtherChannels, create the port channel logical interface and then put
the Ethernet interfaces from both the VSS active and VSS standby into the port channel.
These sections describe Layer 3 EtherChannel configuration:
•
•
Creating Port Channel Logical Interfaces
To move an IP address from a physical interface to an EtherChannel, you must delete the IP address from
Note
the physical interface before configuring it on the port channel interface.
To create a port channel interface for a Layer 3 EtherChannel, perform this task:
Command
Step 1
Switch(config)# interface port-channel
port_channel_number
Step 2
Switch(config-if)# ip address ip_address mask
Step 3
Switch(config-if)# end
Step 4
Switch# show running-config interface
port-channel port_channel_number
This example shows how to create port channel interface 1:
Switch# configure terminal
Switch(config)# interface port-channel 1
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
5-48
Creating Port Channel Logical Interfaces, page 5-48
Configuring Physical Interfaces as Layer 3 EtherChannels, page 5-49
Chapter 5
Purpose
Enters VSS configuration mode.
Assigns the router MAC address from a reserved pool of
domain-based addresses.
Note This is the default.
This is shown in the configuration, even if it the default.
Assigns the router MAC address in three 2-byte
hexadecimal numbers.
Specifies the router MAC address as the last address of
chassis MAC address range.
Purpose
Creates the port channel interface. The value for
port_channel_number can range from 1 to 64.
Assigns an IP address and subnet mask to the
EtherChannel.
Exits configuration mode.
Verifies the configuration.
Configuring Virtual Switching Systems