Cisco Systems 78-11741-02 manual Udlr Configuration Examples, Udlr Tunnel Example, IPC-513

Configuring Unidirectional Link Routing

UDLR Configuration Examples

UDLR Configuration Examples

This section provides the following UDLR examples:

•UDLR Tunnel Example

•IGMP UDLR Example

•IGMP Proxy Example

•Integrated UDLR Tunnel, IGMP UDLR, and IGMP Proxy Example

UDLR Tunnel Example

The following example shows how to configure a UDLR tunnel. In the example, Router A (the upstream router) is configured with Open Shortest Path First (OSPF) and PIM. Serial interface 0 has send-only capability. Therefore, the UDLR tunnel is configured as receive only, and points to serial 0.

Router B (the downstream router) is configured with OSPF and PIM. Serial interface 1 has receive-only capability. Therefore, the UDLR tunnel is configured as send-only, and points to serial 1. The forwarding of ARP and NHRP is enabled. Figure 83 illustrates the example.

Figure 83 UDLR Tunnel Example

Router A

Data

Serial 0
Control	Tunnel 0
messages
Satellite	Internet
network
Tunnel 1
Serial 1	Control
	messages
Router B

Router A Configuration

ip multicast-routing

!

!Serial0 has send-only capability

interface serial 0 encapsulation hdlc

ip address 10.1.0.1 255.255.0.0 ip pim sparse-dense-mode

18929

!

!Configure tunnel as receive-only UDLR tunnel.

interface tunnel 0 tunnel source 11.0.0.1 tunnel destination 11.0.0.2

Cisco IOS IP Configuration Guide

IPC-513