R3303-HP 6600/HSR6600 Routers Layer 3 - IP Routing Configuration Guide

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# Ping Loopback 0 of Router B from Host A, and set the data length to 200 bytes.

C:\>ping -l 200 10.1.1.1

Pinging 10.1.1.1 with 200 bytes of data:

Reply from 10.1.1.1: bytes=200 time<1ms TTL=255

Ping statistics for 10.1.1.1:

Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),

Approximate round trip times in milli-seconds:

Minimum = 0ms, Maximum = 0ms, Average = 0ms

The debugging information about PBR displayed on Router A is as follows:

*Jun 7 12:06:47:631 2009 RouterA PBR/7/POLICY-ROUTING: IP policy based routing

success : POLICY_ROUTEMAP : lab1, Node : 20, next-hop : 151.1.1.2

*Jun 7 12:06:48:630 2009 RouterA PBR/7/POLICY-ROUTING: IP policy based routing

success : POLICY_ROUTEMAP : lab1, Node : 20, next-hop : 151.1.1.2

*Jun 7 12:06:49:627 2009 RouterA PBR/7/POLICY-ROUTING: IP policy based routing

success : POLICY_ROUTEMAP : lab1, Node : 20, next-hop : 151.1.1.2

*Jun 7 12:06:50:627 2009 RouterA PBR/7/POLICY-ROUTING: IP policy based routing

success : POLICY_ROUTEMAP : lab1, Node : 20, next-hop : 151.1.1.2

The preceding information shows that Router A sets the next hop for the received packets to

151.1.1.2 according to PBR. The packets are forwarded through Serial 2/2/1.

Configuring interface PBR based on reverse input interface

Network requirements

As shown in Figure 87, Router A (gateway) is connected to the public network through two interfaces

(Serial 2/2/0 and Serial 2/2/1). PC on the public network sends a request packet to the HTTP server on

the private network. Suppose the packet is received by Serial 2/2/0 on Router A and then is forwarded

to the HTTP server through GigabitEthernet 2/1/1.

It is required that the response packet from the private network should enter Router A through

GigabitEthernet 2/1/1 and leave Router A through the reverse input interface Serial 2/2/0 (the

interface that receives the request packet).