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1、描述BGP消息報(bào)文和狀態(tài)機(jī)制以及工作原理實(shí)驗(yàn)練習(xí)如圖兩AS系統(tǒng)要求全網(wǎng)建立BGP對(duì)等體關(guān)系，AS65131要求只和自己物理直連設(shè)備建立IBGP關(guān)系，R3R4R5宣告BGP流使得全網(wǎng)互通，并保證R2和R5之間線纜down掉后保證正常通訊RT1interfaceLoopBack0ipaddress1.1.1.1255.255.255.255interfaceGigabitEthernet0/0/0portlink-moderouteipaddress14.1.1.1255.255.255.0#interfaceGigabitEthernet0/0/1portlink-moderouteipad
2、dress12.1.1.1255.255.255.0#interfaceGigabitEthernet0/0/2portlink-moderouteipaddress15.1.1.1255.255.255.0#bgp100undosynchronizationpeer14.1.1.4as-number400peer5.5.5.5as-number100peer2.2.2.2as-number100peer5.5.5.5connect-interfaceLoopBack0peer2.2.2.2connect-interfaceLoopBack0#ospf1area0.0.0.0network
3、1.1.1.10.0.0.0network15.1.1.10.0.0.0network12.1.1.10.0.0.0network14.1.1.10.0.0.0#RT2interfaceLoopBack0ipaddress2.2.2.2255.255.255.255#interfaceGigabitEthernet0/0/0portlink-moderouteipaddress23.1.1.2255.255.255.0#interfaceGigabitEthernet0/0/1portlink-moderouteipaddress12.1.1.2255.255.255.0#interfac
4、eGigabitEthernet0/0/2portlink-moderouteipaddress25.1.1.2255.255.255.0#bgp100undosynchronizationpeer1.1.1.1as-number100peer5.5.5.5as-number100peer3.3.3.3as-number100peer1.1.1.1connect-interfaceLoopBack0peer5.5.5.5connect-interfaceLoopBack0peer3.3.3.3reflect-clientpeer3.3.3.3connect-interfaceLoopBac
5、k0#ospf1area0.0.0.0network2.2.2.20.0.0.0network23.1.1.20.0.0.0network25.1.1.20.0.0.0network12.1.1.20.0.0.0#RT3interfaceLoopBack0ipaddress3.3.3.3255.255.255.255#interfaceLoopBack1ipaddress192.168.3.100255.255.255.255#interfaceGigabitEthernet0/0/0portlink-moderouteipaddress23.1.1.3255.255.255.0#bgp1
6、00network192.168.3.100255.255.255.255undosynchronizationpeer2.2.2.2as-number100peer2.2.2.2connect-interfaceLoopBack0#ospf1area0.0.0.0network3.3.3.30.0.0.0network23.1.1.30.0.0.0#RT4interfaceLoopBack0ipaddress4.4.4.4255.255.255.255#interfaceLoopBack1ipaddress192.168.4.100255.255.255.255#interfaceGig
7、abitEthernet0/0/0portlink-moderouteipaddress14.1.1.4255.255.255.0#bgp400network192.168.4.100255.255.255.255undosynchronizationpeer14.1.1.1as-number100RT5interfaceLoopBack0ipaddress5.5.5.5255.255.255.255#interface
