Specifications

Configuring IP Multilayer Switching
Configuring and Monitoring MLS
2
• Configuring MLS on a Router (Required)
• Monitoring MLS (Optional)
• Monitoring MLS for an Interface (Optional)
• Monitoring MLS Interfaces for VTP Domains (Optional)
Configuring MLS on a Router
To configure MLS on your router, use the following commands beginning in global configuration mode.
Depending upon your configuration, you might not have to perform all the steps in the procedure.
Note The interface-specific commands in this section apply only to Ethernet, Fast Ethernet, VLAN, and Fast
Etherchannel interfaces on the Catalyst RSM/Versatile Interface Processor 2 (VIP2) or directly attached
external router.
To globally disable MLS on the router, use the following command in global configuration mode:
Monitoring MLS
To display MLS details including specifics for MLSP, use the following commands in EXEC mode, as
needed:
Command Purpose
Step 1
Router(config)# mls rp ip
Globally enables MLSP. MLSP is the protocol that runs
between the MLS-SE and the MLS-RP.
Step 2
Router(config)# interface type number
Selects a router interface.
Step 3
Router(config-if)# mls rp vtp-domain
[domain-name]
Selects the router interface to be Layer 3 switched and then
adds that interface to the same VLAN Trunking Protocol
(VTP) domain as the switch. This interface is referred to as
the MLS interface. This command is required only if the
Catalyst switch is in a VTP domain.
Step 4
Router(config-if)# mls rp vlan-id
[vlan-id-num]
Assigns a VLAN ID to the MLS interface. MLS requires that
each interface has a VLAN ID. This step is not required for
RSM VLAN interfaces or ISL-encapsulated interfaces.
Step 5
Router(config-if)# mls rp ip
Enables each MLS interface.
Step 6
Router(config-if)# mls rp
management-interface
Selects one MLS interface as a management interface. MLSP
packets are sent and received through this interface. This can
be any MLS interface connected to the switch.
Repeat steps 2 through 5 for each interface that will
support MLS.
Command Purpose
Router(config)# no mls rp ip
Disables MLS on the router.