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Cisco 10008 Router Performance Routing Engine 3 Installation

OL-8544-01

Analyzing and Troubleshooting Packets

IPv6 Forwarding over MPLS

The Cisco 10008 router supports PXF–accelerated IPv6 packet forwarding over Multiprotocol Label

Switching (MPLS) on the PRE3. This feature is enabled by default.

Table 6 lists common IPv6 over MPLS commands. For detailed information about configuring IPv6,

refer to the Cisco 10000 Series Router Broadband Aggregation, Leased-Line, and MPLS Configuration

Guide.

Table 6 IPv6 Forwarding over MPLS Commands

Sample Case Study

For the purposes of this case study, assume that the following ACL is configured on the router’s

outbound serial 1/0/0 interface:

access-list 108 permit udp any host 10.68.1.10 range 0 5000 log

access-list 108 permit udp host 10.1.1.l0 range 0 5000 any log

A traffic simulator is used to send 100 UDP packets to the Cisco 10008 router with the source and

destination ports of the packets set to 6000. Packets arrive on the Gigabit Ethernet 2/0/0 interface and

are supposed to leave the router through the serial 1/0/0 interface.

Router# show pxf cpu subblocks

Displays PXF CPU statistics for a bridged

subinterface (encapsulation type).

Router# show pxf cpu vcci

Displays VCCI to interface mapping

information on the PXF CPU.

Command Purpose

Command Mode Purpose

Router(config)# ipv6

unicast-routing

Global configuration Enables the forwarding of IPv6

packets.

Router(config)# ipv6 cef

Global configuration Enables Cisco Express

Forwarding for IPv6 (CEFv6).

Router(config)# ipv6 cef

distributed

Global configuration Enables distributed CEFv6

(dCEFv6) to process IPv6

packets from the Route

Processor (RP) to the line

cards.

Router(config-if)# ipv6

enable

Interface configuration Enables IPv6 processing on an

interface that has not been

configured with an explicit

IPv6 address.

Router(config-if)# ipv6

address

Interface configuration Configures an IPv6 address

based on an IPv6 general prefix

and enables IPv6 processing on

an interface,

Router# show pxf cpu ipv6

Privileged EXEC Displays PXF IPv6 statistics.

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