R2511-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V5)

271

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 2/1.

Configuring local PBR to specify output interface and next hop

Network requirements

As shown in Figure 78:

• The downlink port of the router is connected to the hosts, and its uplink port Ethernet1/1 is

connected to the Internet.

• The subinterface Ethernet 1/1.1 obtains its IP address through DHCP.

Configure local PBR so that the router forward SNMP packets and SNMP traps through the subinterface

E t h e r n e t 1 / 1.1.

Figure 78 Network diagram

Configuration procedure

# Configure the subinterface Ethernet1/1.1 to obtain its IP address through DHCP.

<Router> system-view

[Router] interface ethernet 1/1.1

[Router-Ethernet1/1.1] ip address dhcp-alloc

[Router-Ethernet1/1.1] vlan-type dot1q vid 1

[Router-Ethernet1/1.1] quit

# Configure ACL 3000 to match SNMP packets and SNMP traps.

[Router] acl number 3000

[Router-acl-adv-3000] rule 0 permit udp source-port eq snmp

[Router-acl-adv-3000] rule 5 permit udp destination-port eq snmptrap

[Router-acl-adv-3000] quit