Specifications

IP Switching Commands
mls ip cef rpf multipath
ISW-101
Cisco IOS IP Switching Command Reference
May 2008
mls ip cef rpf multipath
To configure the RPF modes, use the mls ip cef rpf multipath command in global configuration mode.
To return to the default settings, use the no form of this command.
mls ip cef rpf multipath {interface-group | punt | pass}
no mls ip cef rpf multipath {interface-group | punt | pass}
Syntax Description
Defaults punt
Command Modes Global configuration
Command History
Usage Guidelines This command is not supported on Cisco 7600 series routers that are configured with a Supervisor
Engine
2.
The interface-group mode is similar to the pass mode but utilizes the RPF_VLAN global table for the
RPF check. Packets from other multiple path prefixes always pass the RPF check.
Yo u en te r th e mls ip cef rpf multipath interface-group command to define an RPF_VLAN table
interface group. One interface group contains from three to six interfaces, and you can configure up to
four interface groups. For each interface group, the first four entries are installed in the hardware
RPF_VLAN table. For the prefix that has more than three multiple paths, and all paths except two are
part of that interface group, the FIB entry of that prefix uses this RPF_VLAN entry.
Examples This example shows how to redirect the RPF-failed packets to the route processor for multiple path
prefix support:
Router(config)# mls ip cef rpf multipath interface-group
Related Commands
interface-group Disables the RPF check for packets coming from multiple path routes;
see the “Usage Guidelines” section for additional information.
punt Redirects the RPF-failed packets to the route processor for multiple
path prefix support.
pass Disables the RPF check for packets coming from multiple path routes.
Release Modification
12.2(14)SX Support for this command was introduced on the Supervisor Engine 720.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
Command Description
show mls cef ip Displays the IP entries in the MLS-hardware Layer 3-switching table.