5-30Configuration planz Split AS 100 into three sub-ASs: AS 1001, AS 1002, and AS 1003.z Run EBGP between AS 1001, AS 1002, and AS 1003.z AS 1001, AS 1002, and AS 1003 are each fully meshed by running IBGP.z Run EBGP between AS 100 and AS 200.Configuration procedure# Configure Switch A. system-view[SwitchA] bgp 1001[SwitchA-bgp] confederation id 100[SwitchA-bgp] confederation peer-as 1002 1003[SwitchA-bgp] group confed1002 external[SwitchA-bgp] peer 172.68.10.2 group confed1002 as-number 1002[SwitchA-bgp] group confed1003 external[SwitchA-bgp] peer 172.68.10.3 group confed1003 as-number 1003# Configure Switch B. system-view[SwitchB] bgp 1002[SwitchB-bgp] confederation id 100[SwitchB-bgp] confederation peer-as 1001 1003[SwitchB-bgp] group confed1001 external[SwitchB-bgp] peer 172.68.10.1 group confed1001 as-number 1001[SwitchB-bgp] group confed1003 external[SwitchB-bgp] peer 172.68.10.3 group confed1003 as-number 1003# Configure Switch C. system-view[SwitchC] bgp 1003[SwitchC-bgp] confederation id 100[SwitchC-bgp] confederation peer-as 1001 1002[SwitchC-bgp] group confed1001 external[SwitchC-bgp] peer 172.68.10.1 group confed1001 as-number 1001[SwitchC-bgp] group confed1002 external[SwitchC-bgp] peer 172.68.10.2 group confed1002 as-number 1002[SwitchC-bgp] group ebgp200 external[SwitchC-bgp] peer 156.10.1.2 group ebgp200 as-number 200[SwitchC-bgp] group ibgp1003 internal[SwitchC-bgp] peer 172.68.1.2 group ibgp1003Configuring BGP RRNetwork requirementsBGP runs in a large AS of a company. As the number of IBGP peers increases rapidly in the AS, morenetwork resources for BGP communication are occupied. The customer hopes to reduce IBGP peers tominimize the CPU and network resources consumption by BGP without affecting device performance.In addition, IBGP peers are partially interconnected in the AS.Based on the requirements and networking environment, configure a BGP route reflector to achieve thegoal.
