Packet type-based local PBR configuration example

Network requirements

As shown in Figure 72, configure PBR on Switch A to forward all TCP packets to the next hop 1.1.2.2. Switch A forwards other packets according to the routing table.

Figure 72: Network diagram

Configuration procedure

  1. Configure Switch A:

    # Create VLAN 10 and VLAN 20.

    <SwitchA> system-view
    [SwitchA] vlan 10
    [SwitchA-vlan10] quit
    [SwitchA] vlan 20
    [SwitchA-vlan20] quit
    

    # Configure the IP addresses of VLAN-interface 10 and VLAN-interface 20.

    [SwitchA] interface vlan-interface 10
    [SwitchA-Vlan-interface10] ip address 1.1.2.1 24
    [SwitchA-Vlan-interface10] quit
    [SwitchA] interface vlan-interface 20
    [SwitchA-Vlan-interface20] ip address 1.1.3.1 24
    [SwitchA-Vlan-interface20] quit
    

    # Configure ACL 3101 to match TCP packets.

    [SwitchA] acl number 3101
    [SwitchA-acl-adv-3101] rule permit tcp
    [SwitchA-acl-adv-3101] quit
    

    # Configure Node 5 for policy aaa to forward TCP packets to next hop 1.1.2.2.

    [SwitchA] policy-based-route aaa permit node 5
    [SwitchA-pbr-aaa-5] if-match acl 3101
    [SwitchA-pbr-aaa-5] apply next-hop 1.1.2.2
    [SwitchA-pbr-aaa-5] quit
    

    # Configure local PBR by applying policy aaa to Switch A.

    [SwitchA] ip local policy-based-route aaa
    
  2. Configure Switch B:

    # Create VLAN 10.

    <SwitchB> system-view
    [SwitchB] vlan 10
    [SwitchB-vlan10] quit
    

    # Configure the IP address of VLAN-interface 10.

    [SwitchB] interface vlan-interface 10
    [SwitchB-Vlan-interface10] ip address 1.1.2.2 24
    
  3. Configure Switch C:

    # Create VLAN 20.

    <SwitchC> system-view
    [SwitchC] vlan 20
    [SwitchC-vlan20] quit
    

    # Configure the IP address of VLAN-interface 20.

    [SwitchC] interface vlan-interface 20
    [SwitchC-Vlan-interface20] ip address 1.1.3.2 24
    

Verifying the configuration

# Telnet to Switch B on Switch A. The operation succeeds.

# Telnet to Switch C on Switch A. The operation fails.

# Ping Switch C from Switch A. The operation succeeds.

Telnet uses TCP and ping uses ICMP. The preceding results show that all TCP packets sent from Switch A are forwarded to the next hop 1.1.2.2, and other packets are forwarded through VLAN-interface 20. The local PBR configuration is effective.