3Com Switch 8800 Configuration Guide Chapter 31 MBGP Multicast Extension Configuration31-1231.4 MBGP Multicast Extension Configuration ExampleI. Networking requirementThis example describes how the administrator uses the MBGP attributes to manageroute selection. All switches are configured with MBGP. The IGP in AS200 uses OSPF.Switch A is AS100 and serves as the MBGP neighbor of Switch B and Switch C inAS200. Switch B and Switch C run IBGP for Switch D in AS200. Switch D is also inAS200.II. Networking diagramFigure 31-1 Networking diagram for MBGP path selection configurationIII. Configuration procedure1) Configure Switch A:[SwitchA] vlan 20[SwitchA-vlan20] port ethernet1/1/2[SwitchA-vlan20] quit[SwitchA] interface vlan-interface 20[SwitchA-Vlan-interface20] ip address 192.1.1.1 255.255.255.0[SwitchA-Vlan-interface20] quit[SwitchA] vlan 30[SwitchA-vlan30] port ethernet1/1/3[SwitchA-vlan30] quit[SwitchA] interface vlan-interface 30[SwitchA-Vlan-interface30] ip address 193.1.1.1 255.255.255.0[SwitchA-Vlan-interface30] quitEnable MBGP.[SwitchA] bgp 100[SwitchA-bgp] ipv4-family multicastSpecify target network for MBGP.
