拓扑如图任务一使用物理口建立BGP邻居配置命令[AR2]bgp 100[AR2-bgp]peer 23.1.1.3 as-number 200[AR3]bgp 200[AR3-bgp]peer 23.1.1.2 as-number 100任务二使用环回口建立BGP邻居配置命令[AR2]interface LoopBack 0[AR2-LoopBack0]ip add 2.2.2.2 32[AR2]ip route-static 3.3.3.3 32 23.1.1.3[AR2-bgp]peer 3.3.3.3 as-number 200[AR2-bgp]peer 3.3.3.3 connect-interface LoopBack 0[AR2-bgp]peer 3.3.3.3 ebgp-max-hop 2[AR3]interface LoopBack 0[AR3-LoopBack0]ip add 3.3.3.3 32[AR3]ip route-static 2.2.2.2 32 23.1.1.2[AR3-bgp]peer 2.2.2.2 as-number 100[AR2-bgp]peer 2.2.2.2 connect-interface LoopBack 0[AR2-bgp]peer 2.2.2.2 ebgp-max-hop 2