需求：假設AS65001 網絡是 電信網 AS65002 網絡是移動網，網段202.106.15.0 是電信業務段，網絡202.106.48.0 是移動業務段
互相訪問，並且R4能遠程控制R1.
R1上配置：
R1#en
R1#conf t
R1(config-if)#inter f1/0 配置IP地址
R1(config-if)#ip address 202.106.16.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#inter f0/0
R1(config-if)#ip address 202.106.15.11 255.255.255.0
R1(config-if)#no shut
R1(config-if)#inter loop 0 配置環回口地址
R1(config-if)#ip address 1.1.1.1 255.255.255.255
R1(config-if)#no shut
R1(config)#inter f0/1
R1(config-if)#ip address 202.106.12.1 255.255.255.0
R1(config-if)#no shut
R1(config)#no cdp run
R1(config)#router isis 啓動ISIS協議
R1(config-router)#net 49.0001.0001.0001.0001.00 NET地址
R1(config-router)#is-type level-1 IS類型等級是1
R1(config-router)#ex
R1(config)#inter f0/1
R1(config-if)#ip router isis
R1(config-if)#inter f1/0
R1(config-if)#ip router isis
R1(config-if)#inter loop 0
R1(config-if)#ip router isis
R1(config-if)#router bgp 65001 BGP AS65001
R1(config-router)#bgp router-id 1.1.1.1 BGP路由ID
R1(config-router)#neighbor 2.2.2.2 remote-as 65001 建立鄰居關係
R1(config-router)#neighbor 2.2.2.2 update-source l 0 更新源爲 環回口
R1(config-router)#neighbor 6.6.6.6 remote-as 65001
R1(config-router)#neighbor 6.6.6.6 update-source l 0
*Mar 1 00:26:27.907: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up 與2建立鄰居關係
R1(config-router)#
*Mar 1 00:33:30.271: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up 與6建立鄰居關係
R1(config-router)#ex
R1(config)#int f0/0
R1(config-if)#vrrp 1 ip 202.106.15.1 VRRP冗餘備份
R1(config-if)#vrrp 1 priority 120 優先級爲120
R1(config-if)#vrrp 1 preempt 配置搶佔
R1(config-if)#ex
R1(config)#track 1 interface f0/1 line-protocol 監控端口
R1(config)#track 2 interface f1/0 line-protocol
R1(config-track)#inter f0/0
R1(config-if)#vrrp 1 track 1
R1(config-if)#vrrp 1 track 2
R1(config)#router bgp 65001
R1(config-router)#network 202.106.15.0 mask 255.255.255.0 發佈網絡
R1(config)#line vty 0 4 開啓遠程管理
R1(config-line)#password 110
R1(config-line)#login
R1(config-line)#exit
R1(config)#enable secret 110
R1#conf t
R1(config-if)#inter f1/0 配置IP地址
R1(config-if)#ip address 202.106.16.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#inter f0/0
R1(config-if)#ip address 202.106.15.11 255.255.255.0
R1(config-if)#no shut
R1(config-if)#inter loop 0 配置環回口地址
R1(config-if)#ip address 1.1.1.1 255.255.255.255
R1(config-if)#no shut
R1(config)#inter f0/1
R1(config-if)#ip address 202.106.12.1 255.255.255.0
R1(config-if)#no shut
R1(config)#no cdp run
R1(config)#router isis 啓動ISIS協議
R1(config-router)#net 49.0001.0001.0001.0001.00 NET地址
R1(config-router)#is-type level-1 IS類型等級是1
R1(config-router)#ex
R1(config)#inter f0/1
R1(config-if)#ip router isis
R1(config-if)#inter f1/0
R1(config-if)#ip router isis
R1(config-if)#inter loop 0
R1(config-if)#ip router isis
R1(config-if)#router bgp 65001 BGP AS65001
R1(config-router)#bgp router-id 1.1.1.1 BGP路由ID
R1(config-router)#neighbor 2.2.2.2 remote-as 65001 建立鄰居關係
R1(config-router)#neighbor 2.2.2.2 update-source l 0 更新源爲 環回口
R1(config-router)#neighbor 6.6.6.6 remote-as 65001
R1(config-router)#neighbor 6.6.6.6 update-source l 0
*Mar 1 00:26:27.907: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up 與2建立鄰居關係
R1(config-router)#
*Mar 1 00:33:30.271: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up 與6建立鄰居關係
R1(config-router)#ex
R1(config)#int f0/0
R1(config-if)#vrrp 1 ip 202.106.15.1 VRRP冗餘備份
R1(config-if)#vrrp 1 priority 120 優先級爲120
R1(config-if)#vrrp 1 preempt 配置搶佔
R1(config-if)#ex
R1(config)#track 1 interface f0/1 line-protocol 監控端口
R1(config)#track 2 interface f1/0 line-protocol
R1(config-track)#inter f0/0
R1(config-if)#vrrp 1 track 1
R1(config-if)#vrrp 1 track 2
R1(config)#router bgp 65001
R1(config-router)#network 202.106.15.0 mask 255.255.255.0 發佈網絡
R1(config)#line vty 0 4 開啓遠程管理
R1(config-line)#password 110
R1(config-line)#login
R1(config-line)#exit
R1(config)#enable secret 110
R1#show vrrp br R1是主路由器
Interface Grp Pri Time Own Pre State Master addr Group addr
Fa0/0 1 120 3531 Y Master 202.106.15.11 202.106.15.1
Interface Grp Pri Time Own Pre State Master addr Group addr
Fa0/0 1 120 3531 Y Master 202.106.15.11 202.106.15.1
R1#show bgp
BGP table version is 5, local router ID is 1.1.1.1
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
r>i2.2.2.2/32 2.2.2.2 0 100 0 i
*> 202.106.15.0 0.0.0.0 0 32768 i
*>i202.106.48.0 3.3.3.3 0 100 0 65002 i
r>i2.2.2.2/32 2.2.2.2 0 100 0 i
*> 202.106.15.0 0.0.0.0 0 32768 i
*>i202.106.48.0 3.3.3.3 0 100 0 65002 i
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd 鄰居關係表
2.2.2.2 4 65001 42 41 5 0 0 00:19:10 2
6.6.6.6 4 65001 31 32 5 0 0 00:27:03 0
R2的配置：
R2>en
R2#conf t
R2(config)#inter f0/0
R2(config-if)#ip address 202.106.12.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#inter f1/0
R2(config-if)#no switchport
R2(config-if)#ip address 202.106.52.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#inter f1/1
R2(config-if)#no switchport
R2(config-if)#ip address 202.106.26.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#inter f0/1
R2(config-if)#ip address 202.106.23.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#int loop 0
R2(config-if)#ip address 2.2.2.2 255.255.255.255
R2(config-if)#no shut
R2(config-if)#ex
R2(config)#no cdp run
R2(config)#router isis
R2(config-router)#net 49.0001.0002.0002.0002.00
R2(config-router)#ex
R2(config)#inter f0/0
R2(config-if)#ip router isis
R2(config)#inter f1/0
R2(config-if)#ip router isis
R2(config-if)#inter f1/1
R2(config-if)#ip router isis
R2(config-if)#inter f0/1
R2(config-if)#ip router isis
R2(config-if)#inter loop 0
R2(config-if)#ip router isis
R2(config-if)#router bgp 65001
R2(config-router)#bgp router-id 2.2.2.2
R2(config-router)#neighbor 1.1.1.1 remote-as 65001
R2(config-router)#neighbor 1.1.1.1 update-source l 0
*Mar 1 00:26:27.699: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Up
R2(config-router)#neighbor 5.5.5.5 remote-as 65001
R2(config-router)#neighbor 5.5.5.5 update-source l 0
R2(config-router)#neighbor 6.6.6.6 remote-as 65001
R2(config-router)#neighbor 6.6.6.6 update-source l 0
R2(config-router)#neighbor 3.3.3.3 remote-as 65001
R2(config-router)#neighbor 3.3.3.3 update-source l 0
R2(config-router)#
*Mar 1 00:30:16.359: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up
R2(config-router)#
*Mar 1 00:32:39.059: %BGP-5-ADJCHANGE: neighbor 5.5.5.5 Up
R2(config-router)#
*Mar 1 00:33:58.743: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R2(config-router)#neighbor 1.1.1.1 route-reflector-client 做成路由反射器
R2(config-router)#bgp cluster-id 10 可以把一個反射器或者簇理解爲一個大路由器
R2(config-router)#network 2.2.2.2 mask 255.255.255.255
R2(config-router)#ex
R2(config)#line vty 0 4 開啓遠程管理
R2(config-line)#password 123
R2(config-line)#login
R2(config-line)#exit
R2(config)#enable secret 123
R3的配置
R2#conf t
R2(config)#inter f0/0
R2(config-if)#ip address 202.106.12.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#inter f1/0
R2(config-if)#no switchport
R2(config-if)#ip address 202.106.52.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#inter f1/1
R2(config-if)#no switchport
R2(config-if)#ip address 202.106.26.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#inter f0/1
R2(config-if)#ip address 202.106.23.2 255.255.255.0
R2(config-if)#no shut
R2(config-if)#int loop 0
R2(config-if)#ip address 2.2.2.2 255.255.255.255
R2(config-if)#no shut
R2(config-if)#ex
R2(config)#no cdp run
R2(config)#router isis
R2(config-router)#net 49.0001.0002.0002.0002.00
R2(config-router)#ex
R2(config)#inter f0/0
R2(config-if)#ip router isis
R2(config)#inter f1/0
R2(config-if)#ip router isis
R2(config-if)#inter f1/1
R2(config-if)#ip router isis
R2(config-if)#inter f0/1
R2(config-if)#ip router isis
R2(config-if)#inter loop 0
R2(config-if)#ip router isis
R2(config-if)#router bgp 65001
R2(config-router)#bgp router-id 2.2.2.2
R2(config-router)#neighbor 1.1.1.1 remote-as 65001
R2(config-router)#neighbor 1.1.1.1 update-source l 0
*Mar 1 00:26:27.699: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Up
R2(config-router)#neighbor 5.5.5.5 remote-as 65001
R2(config-router)#neighbor 5.5.5.5 update-source l 0
R2(config-router)#neighbor 6.6.6.6 remote-as 65001
R2(config-router)#neighbor 6.6.6.6 update-source l 0
R2(config-router)#neighbor 3.3.3.3 remote-as 65001
R2(config-router)#neighbor 3.3.3.3 update-source l 0
R2(config-router)#
*Mar 1 00:30:16.359: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up
R2(config-router)#
*Mar 1 00:32:39.059: %BGP-5-ADJCHANGE: neighbor 5.5.5.5 Up
R2(config-router)#
*Mar 1 00:33:58.743: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R2(config-router)#neighbor 1.1.1.1 route-reflector-client 做成路由反射器
R2(config-router)#bgp cluster-id 10 可以把一個反射器或者簇理解爲一個大路由器
R2(config-router)#network 2.2.2.2 mask 255.255.255.255
R2(config-router)#ex
R2(config)#line vty 0 4 開啓遠程管理
R2(config-line)#password 123
R2(config-line)#login
R2(config-line)#exit
R2(config)#enable secret 123
R3的配置
R3>en
R3#conf t
R3(config)#no cdp run
R3(config)#inter f0/0
R3(config-if)#ip address 202.106.23.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#inter f0/1
R3(config-if)#ip address 202.106.34.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#inter f1/0
R3(config-if)#ip address 202.106.37.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#inter loop 0
R3(config-if)#ip address 3.3.3.3 255.255.255.255
R3(config-if)#no shut
R3(config-if)#ex
R3(config)#router isis
R3(config-router)#net 49.0002.0003.0003.0003.00
R3(config-router)#is-type level-2-only 類型2
(R3(config-router)#ex
R3(config)#inter f0/0
R3(config-if)#ip router isis
R3(config-if)#inter f1/0
R3(config-if)#ip router isis
R3(config-if)#inter loop 0
R3(config-if)#ip router isis
R3(config)#router bgp 65001
R3(config-router)#bgp router-id 3.3.3.3
R3(config-router)#neighbor 2.2.2.2 remote-as 65001
R3(config-router)#neighbor 2.2.2.2 update-source l 0
*Mar 1 00:30:16.079: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
R3(config-router)#neighbor 7.7.7.7 remote-as 65001
R3(config-router)#neighbor 7.7.7.7 update-source loop 0
R3(config-router)#neighbor 4.4.4.4 remote-as 65002
R3(config-router)#neighbor 4.4.4.4 update-source l 0
R3(config-router)#
*Mar 1 00:35:11.975: %BGP-5-ADJCHANGE: neighbor 7.7.7.7 Up
R3(config)#ip route 4.4.4.4 255.255.255.255 202.106.34.4 配置靜態路由 2邊路由器都要設置
R3config)#router bgp 65001
R3(config-router)#neighbor 4.4.4.4 ebgp-multihop 2 TTL值設置成2 跳數2
R3#conf t
R3(config)#no cdp run
R3(config)#inter f0/0
R3(config-if)#ip address 202.106.23.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#inter f0/1
R3(config-if)#ip address 202.106.34.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#inter f1/0
R3(config-if)#ip address 202.106.37.3 255.255.255.0
R3(config-if)#no shut
R3(config-if)#inter loop 0
R3(config-if)#ip address 3.3.3.3 255.255.255.255
R3(config-if)#no shut
R3(config-if)#ex
R3(config)#router isis
R3(config-router)#net 49.0002.0003.0003.0003.00
R3(config-router)#is-type level-2-only 類型2
(R3(config-router)#ex
R3(config)#inter f0/0
R3(config-if)#ip router isis
R3(config-if)#inter f1/0
R3(config-if)#ip router isis
R3(config-if)#inter loop 0
R3(config-if)#ip router isis
R3(config)#router bgp 65001
R3(config-router)#bgp router-id 3.3.3.3
R3(config-router)#neighbor 2.2.2.2 remote-as 65001
R3(config-router)#neighbor 2.2.2.2 update-source l 0
*Mar 1 00:30:16.079: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
R3(config-router)#neighbor 7.7.7.7 remote-as 65001
R3(config-router)#neighbor 7.7.7.7 update-source loop 0
R3(config-router)#neighbor 4.4.4.4 remote-as 65002
R3(config-router)#neighbor 4.4.4.4 update-source l 0
R3(config-router)#
*Mar 1 00:35:11.975: %BGP-5-ADJCHANGE: neighbor 7.7.7.7 Up
R3(config)#ip route 4.4.4.4 255.255.255.255 202.106.34.4 配置靜態路由 2邊路由器都要設置
R3config)#router bgp 65001
R3(config-router)#neighbor 4.4.4.4 ebgp-multihop 2 TTL值設置成2 跳數2
*Mar 1 00:34:10.268: %BGP-5-ADJCHANGE: neighbor 4.4.4.4 Up
R3(config-router)#neighbor 2.2.2.2 next-hop-self 告訴自己 下一條是2.2.2.2
R3(config-router)#end
R3#write
Building configuration...
[OK]
R3(config-router)#neighbor 2.2.2.2 next-hop-self 告訴自己 下一條是2.2.2.2
R3(config-router)#end
R3#write
Building configuration...
[OK]
R4配置
R4>en
R4#conf t
R4(config)#inter f0/0
R4(config-if)#ip address 202.106.34.4 255.255.255.0
R4(config-if)#no shut
R4(config-if)#inter f0/1
R4(config-if)#ip address 202.106.48.4 255.255.255.0
R4(config-if)#no shut
R4(config-if)#ex
R4(config)#no cdp run
R4(config)#inter loop 0
R4(config-if)#ip address 4.4.4.4 255.255.255.255
R4(config-if)#no shut
R4(config-if)#router isis
R4(config-router)#net 49.0001.0004.0004.0004.00
R4(config-router)#is-type level-2-only
R4(config-router)#ex
R4(config)#inter f0/1
R4(config-if)#ip router isis
R4(config-if)#inter loop 0
R4(config-if)#ip router isis
R4(config-if)#router bgp 65002
R4(config-router)#bgp router-id 4.4.4.4
R4(config-router)#neighbor 3.3.3.3 remote-as 65001
R4(config-router)#neighbor 3.3.3.3 update-source l 0
R4(config-router)#neighbor 8.8.8.8 remote-as 65002
R4(config-router)#neighbor 8.8.8.8 update-source l 0
R4(config-router)#
*Mar 1 00:36:37.467: %BGP-5-ADJCHANGE: neighbor 8.8.8.8 Up
R4(config-router)#neighbor 3.3.3.3 ebgp-multihop 2
R4(config-router)#ex
R4(config)#ip route 3.3.3.3 255.255.255.255 202.106.34.3
R4(config)#
*Mar 1 00:38:59.495: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up
R4(config)#router bgp 65002
R4(config-router)#network 202.106.48.0 mask 255.255.255.0 發佈網絡斷
R4(config-router)#end
R4#conf t
R4(config)#inter f0/0
R4(config-if)#ip address 202.106.34.4 255.255.255.0
R4(config-if)#no shut
R4(config-if)#inter f0/1
R4(config-if)#ip address 202.106.48.4 255.255.255.0
R4(config-if)#no shut
R4(config-if)#ex
R4(config)#no cdp run
R4(config)#inter loop 0
R4(config-if)#ip address 4.4.4.4 255.255.255.255
R4(config-if)#no shut
R4(config-if)#router isis
R4(config-router)#net 49.0001.0004.0004.0004.00
R4(config-router)#is-type level-2-only
R4(config-router)#ex
R4(config)#inter f0/1
R4(config-if)#ip router isis
R4(config-if)#inter loop 0
R4(config-if)#ip router isis
R4(config-if)#router bgp 65002
R4(config-router)#bgp router-id 4.4.4.4
R4(config-router)#neighbor 3.3.3.3 remote-as 65001
R4(config-router)#neighbor 3.3.3.3 update-source l 0
R4(config-router)#neighbor 8.8.8.8 remote-as 65002
R4(config-router)#neighbor 8.8.8.8 update-source l 0
R4(config-router)#
*Mar 1 00:36:37.467: %BGP-5-ADJCHANGE: neighbor 8.8.8.8 Up
R4(config-router)#neighbor 3.3.3.3 ebgp-multihop 2
R4(config-router)#ex
R4(config)#ip route 3.3.3.3 255.255.255.255 202.106.34.3
R4(config)#
*Mar 1 00:38:59.495: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up
R4(config)#router bgp 65002
R4(config-router)#network 202.106.48.0 mask 255.255.255.0 發佈網絡斷
R4(config-router)#end
R5的配置
R5>en
R5#conf t
R5(config)#inter f0/0
R5(config-if)#ip address 202.106.15.55 255.255.255.0
R5(config-if)#no shut
R5(config-if)#inter f0/1
R5(config-if)#ip address 202.106.56.5 255.255.255.0
R5(config-if)#no shut
R5(config-if)#inter loop 0
R5(config-if)#ip address 5.5.5.5 255.255.255.255
R5(config-if)#no shut
R5(config-if)#inter f1/0
R5(config-if)#ip address 202.106.52.5 255.255.255.0
R5(config-if)#no shut
R5(config-if)#ex
R5(config)#no cdp run
R5(config)#router isis
R5(config-router)#net 49.0001.0005.0005.0005.00
R5(config-router)#is-type level-1
R5(config)#inter f0/1
R5(config-if)#ip router isis
R5(config-if)#inter f1/0
R5(config-if)#ip router isis
R5(config-if)#inter loop 0
R5(config-if)#ip router isis
R5(config-if)#router bgp 65001
R5(config-router)#bgp router-id 5.5.5.5
R5(config-router)#neighbor 2.2.2.2 remote-as 65001
R5(config-router)#neighbor 2.2.2.2 update-source l 0
*Mar 1 00:32:38.279: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
R5(config-router)#neighbor 6.6.6.6 remote-as 65001
R5(config-router)#neighbor 6.6.6.6 update-source l 0
R5(config-router)#
*Mar 1 00:34:18.087: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R5(config-router)#
*Mar 1 00:41:42.131: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Down Peer closed the session
R5(config-router)#
*Mar 1 00:41:43.787: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R5(config-router)#inter f0/0
R5(config-if)#vrrp 1 ip 202.106.15.1
R5(config-if)#vrrp 1 preempt
R5(config-if)#vrrp 1 priority 115
R5(config-if)#end
R5#write
Building configuration...
[OK]
R5#conf t
R5(config)#inter f0/0
R5(config-if)#ip address 202.106.15.55 255.255.255.0
R5(config-if)#no shut
R5(config-if)#inter f0/1
R5(config-if)#ip address 202.106.56.5 255.255.255.0
R5(config-if)#no shut
R5(config-if)#inter loop 0
R5(config-if)#ip address 5.5.5.5 255.255.255.255
R5(config-if)#no shut
R5(config-if)#inter f1/0
R5(config-if)#ip address 202.106.52.5 255.255.255.0
R5(config-if)#no shut
R5(config-if)#ex
R5(config)#no cdp run
R5(config)#router isis
R5(config-router)#net 49.0001.0005.0005.0005.00
R5(config-router)#is-type level-1
R5(config)#inter f0/1
R5(config-if)#ip router isis
R5(config-if)#inter f1/0
R5(config-if)#ip router isis
R5(config-if)#inter loop 0
R5(config-if)#ip router isis
R5(config-if)#router bgp 65001
R5(config-router)#bgp router-id 5.5.5.5
R5(config-router)#neighbor 2.2.2.2 remote-as 65001
R5(config-router)#neighbor 2.2.2.2 update-source l 0
*Mar 1 00:32:38.279: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
R5(config-router)#neighbor 6.6.6.6 remote-as 65001
R5(config-router)#neighbor 6.6.6.6 update-source l 0
R5(config-router)#
*Mar 1 00:34:18.087: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R5(config-router)#
*Mar 1 00:41:42.131: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Down Peer closed the session
R5(config-router)#
*Mar 1 00:41:43.787: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R5(config-router)#inter f0/0
R5(config-if)#vrrp 1 ip 202.106.15.1
R5(config-if)#vrrp 1 preempt
R5(config-if)#vrrp 1 priority 115
R5(config-if)#end
R5#write
Building configuration...
[OK]
R5#show vrrp b
Interface Grp Pri Time Own Pre State Master addr Group addr 備份路由器
fa0/0 1 115 3550 Y Backup 202.106.15.11 202.106.15.1
Interface Grp Pri Time Own Pre State Master addr Group addr 備份路由器
fa0/0 1 115 3550 Y Backup 202.106.15.11 202.106.15.1
R6配置
R6>en
R6#conf t
R6(config)#inter f0/0
R6(config-if)#ip address 202.106.56.6 255.255.255.0
R6(config-if)#no shut
R6(config)#no cdp run
R6(config)#inter f0/1
R6(config-if)#ip address 202.106.67.6 255.255.255.0
R6(config-if)#no shut
R6(config-if)#inter f1/1
R6(config-if)#no switchport
R6(config-if)#ip address 202.106.26.6 255.255.255.0
R6(config-if)#no shut
R6(config-if)#inter f1/0
R6(config-if)#no switchport
R6(config-if)#ip address 202.106.16.6 255.255.255.0
R6(config-if)#no shut
R6(config-if)#inter loop 0
R6(config-if)#ip address 6.6.6.6 255.255.255.255
R6(config-if)#no shut
R6(config)#inter f0/0
R6(config-if)#ip router isis
R6(config-if)#inter f0/1
R6(config-if)#ip router isis
R6(config-if)#inter f1/0
R6(config-if)#ip router isis
R6(config-if)#inter f1/1
R6(config-if)#ip router isis
R6(config-if)#inter loop 0
R6(config-if)#ip router isis
R6(config-if)#router bgp 65001
R6(config-router)#bgp router-id 6.6.6.6
R6(config-router)#neighbor 1.1.1.1 remote-as 65001
R6(config-router)#neighbor 1.1.1.1 update-source l 0
R6(config-router)#
*Mar 1 00:33:28.955: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Up
R6(config-router)#neighbor 2.2.2.2 remote-as 65001
R6(config-router)#neighbor 2.2.2.2 update-source l 0
R6(config-router)#neighbor 5.5.5.5 remote-as 65001
*Mar 1 00:33:57.679: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
R6(config-router)#neighbor 5.5.5.5 update-source l 0
R6(config-router)#neighbor 7.7.7.7 remote-as 65001
*Mar 1 00:34:17.823: %BGP-5-ADJCHANGE: neighbor 5.5.5.5 Up
R6(config-router)#neighbor 7.7.7.7 update-source l 0
*Mar 1 00:35:46.483: %BGP-5-ADJCHANGE: neighbor 7.7.7.7 Up
R6(config-router)#neighbor 5.5.5.5 route-reflector-client
R6(config-router)#bgp cluster-id 10
R6(config-router)#neighbor 5.5.5.5 next-hop-self
R6(config-router)#end
R6#write
Building configuration...
R6#conf t
R6(config)#inter f0/0
R6(config-if)#ip address 202.106.56.6 255.255.255.0
R6(config-if)#no shut
R6(config)#no cdp run
R6(config)#inter f0/1
R6(config-if)#ip address 202.106.67.6 255.255.255.0
R6(config-if)#no shut
R6(config-if)#inter f1/1
R6(config-if)#no switchport
R6(config-if)#ip address 202.106.26.6 255.255.255.0
R6(config-if)#no shut
R6(config-if)#inter f1/0
R6(config-if)#no switchport
R6(config-if)#ip address 202.106.16.6 255.255.255.0
R6(config-if)#no shut
R6(config-if)#inter loop 0
R6(config-if)#ip address 6.6.6.6 255.255.255.255
R6(config-if)#no shut
R6(config)#inter f0/0
R6(config-if)#ip router isis
R6(config-if)#inter f0/1
R6(config-if)#ip router isis
R6(config-if)#inter f1/0
R6(config-if)#ip router isis
R6(config-if)#inter f1/1
R6(config-if)#ip router isis
R6(config-if)#inter loop 0
R6(config-if)#ip router isis
R6(config-if)#router bgp 65001
R6(config-router)#bgp router-id 6.6.6.6
R6(config-router)#neighbor 1.1.1.1 remote-as 65001
R6(config-router)#neighbor 1.1.1.1 update-source l 0
R6(config-router)#
*Mar 1 00:33:28.955: %BGP-5-ADJCHANGE: neighbor 1.1.1.1 Up
R6(config-router)#neighbor 2.2.2.2 remote-as 65001
R6(config-router)#neighbor 2.2.2.2 update-source l 0
R6(config-router)#neighbor 5.5.5.5 remote-as 65001
*Mar 1 00:33:57.679: %BGP-5-ADJCHANGE: neighbor 2.2.2.2 Up
R6(config-router)#neighbor 5.5.5.5 update-source l 0
R6(config-router)#neighbor 7.7.7.7 remote-as 65001
*Mar 1 00:34:17.823: %BGP-5-ADJCHANGE: neighbor 5.5.5.5 Up
R6(config-router)#neighbor 7.7.7.7 update-source l 0
*Mar 1 00:35:46.483: %BGP-5-ADJCHANGE: neighbor 7.7.7.7 Up
R6(config-router)#neighbor 5.5.5.5 route-reflector-client
R6(config-router)#bgp cluster-id 10
R6(config-router)#neighbor 5.5.5.5 next-hop-self
R6(config-router)#end
R6#write
Building configuration...
R7配置
R7>en
R7#conf t
R7(config)#no cdp run
R7(config)#inter f0/0
R7(config-if)#ip address 202.106.67.7 255.255.255.0
R7(config-if)#no shut
R7(config-if)#inter f0/1
R7(config-if)#ip address 202.106.78.7 255.255.255.0
R7(config-if)#no shut
R7(config-if)#inter f1/0
R7(config-if)#ip add 202.106.37.7 255.255.255.0
R7(config-if)#no shut
R7(config-if)#inter loop 0
R7(config-if)#ip address 7.7.7.7 255.255.255.255
R7(config-if)#no shut
R7(config-if)#router isi
R7(config-router)#net 49.0002.0007.0007.0007.00
R7(config-router)#is-type level-2-only
R7(config-router)#ex
R7(config-if)#inter f0/0
R7(config-if)#ip router isis
R7(config-if)#inter f1/0
R7(config-if)#ip router isis
R7(config-if)#inter loop 0
R7(config-if)#ip router isis
R7(config)#router bgp 65001
R7(config-router)#bgp rout
R7(config-router)#bgp router-id 7.7.7.7
R7(config-router)#neighbor 3.3.3.3 remote-as 65001
R7(config-router)#neighbor 3.3.3.3 update-source l 0
*Mar 1 00:35:10.983: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up
R7(config-router)#neighbor 6.6.6.6 remote-as 65001
R7(config-router)#neighbor 6.6.6.6 update-source l 0
R7(config-router)#neighbor 8.8.8.8 remote-as 65002
R7(config-router)#neighbor 8.8.8.8 update-source l 0
*Mar 1 00:35:46.287: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R7(config-router)#neighbor 8.8.8.8 ebgp-multihop 2
R7(config-router)#ex
R7(config)#ip route 8.8.8.8 255.255.255.255 202.106.78.8
R7(config)#
*Mar 1 00:40:02.355: %BGP-5-ADJCHANGE: neighbor 8.8.8.8 Up
R7(config)#end
R7#
R7#write
Building configuration...
R7#conf t
R7(config)#no cdp run
R7(config)#inter f0/0
R7(config-if)#ip address 202.106.67.7 255.255.255.0
R7(config-if)#no shut
R7(config-if)#inter f0/1
R7(config-if)#ip address 202.106.78.7 255.255.255.0
R7(config-if)#no shut
R7(config-if)#inter f1/0
R7(config-if)#ip add 202.106.37.7 255.255.255.0
R7(config-if)#no shut
R7(config-if)#inter loop 0
R7(config-if)#ip address 7.7.7.7 255.255.255.255
R7(config-if)#no shut
R7(config-if)#router isi
R7(config-router)#net 49.0002.0007.0007.0007.00
R7(config-router)#is-type level-2-only
R7(config-router)#ex
R7(config-if)#inter f0/0
R7(config-if)#ip router isis
R7(config-if)#inter f1/0
R7(config-if)#ip router isis
R7(config-if)#inter loop 0
R7(config-if)#ip router isis
R7(config)#router bgp 65001
R7(config-router)#bgp rout
R7(config-router)#bgp router-id 7.7.7.7
R7(config-router)#neighbor 3.3.3.3 remote-as 65001
R7(config-router)#neighbor 3.3.3.3 update-source l 0
*Mar 1 00:35:10.983: %BGP-5-ADJCHANGE: neighbor 3.3.3.3 Up
R7(config-router)#neighbor 6.6.6.6 remote-as 65001
R7(config-router)#neighbor 6.6.6.6 update-source l 0
R7(config-router)#neighbor 8.8.8.8 remote-as 65002
R7(config-router)#neighbor 8.8.8.8 update-source l 0
*Mar 1 00:35:46.287: %BGP-5-ADJCHANGE: neighbor 6.6.6.6 Up
R7(config-router)#neighbor 8.8.8.8 ebgp-multihop 2
R7(config-router)#ex
R7(config)#ip route 8.8.8.8 255.255.255.255 202.106.78.8
R7(config)#
*Mar 1 00:40:02.355: %BGP-5-ADJCHANGE: neighbor 8.8.8.8 Up
R7(config)#end
R7#
R7#write
Building configuration...
R8配置
R8>en
R8#conf t
R8(config)#no cdp run
R8(config)#inter f0/0
R8(config-if)#ip address 202.106.78.8 255.255.255.0
R8(config-if)#no shut
R8(config-if)#inter f0/1
R8(config-if)#ip address 202.106.48.8 255.255.255.0
R8(config-if)#no shut
R8(config-if)#inter loop 0
R8(config-if)#ip address 8.8.8.8 255.255.255.255
R8(config-if)#no shut
R8(config-if)#router isis
R8(config-router)#net 49.0001.0008.0008.0008.00
R8(config-router)#is-type level-2-only
R8(config-router)#ex
R8(config)#inter f0/1
R8(config-if)#ip router isis
R8(config-if)#inter loo 0
R8(config-if)#ip router isis
R8(config-if)#router bgp 65002
R8(config-router)#bgp router-id 8.8.8.8
R8(config-router)#neighbor 4.4.4.4 remote-as 65002
R8(config-router)#neighbor 4.4.4.4 update-source l 0
*Mar 1 00:36:36.471: %BGP-5-ADJCHANGE: neighbor 4.4.4.4 Up
R8(config-router)#neighbor 7.7.7.7 remote-as 65001
R8(config-router)#neighbor 7.7.7.7 update-source l 0
R8(config-router)#neighbor 7.7.7.7 ebgp-multihop 2
R8(config)#ip route 7.7.7.7 255.255.255.255 202.106.78.7
*Mar 1 00:40:02.115: %BGP-5-ADJCHANGE: neighbor 7.7.7.7 Up
R8(config)#end
R8#write
Building configuration...
[OK]
R8#conf t
R8(config)#no cdp run
R8(config)#inter f0/0
R8(config-if)#ip address 202.106.78.8 255.255.255.0
R8(config-if)#no shut
R8(config-if)#inter f0/1
R8(config-if)#ip address 202.106.48.8 255.255.255.0
R8(config-if)#no shut
R8(config-if)#inter loop 0
R8(config-if)#ip address 8.8.8.8 255.255.255.255
R8(config-if)#no shut
R8(config-if)#router isis
R8(config-router)#net 49.0001.0008.0008.0008.00
R8(config-router)#is-type level-2-only
R8(config-router)#ex
R8(config)#inter f0/1
R8(config-if)#ip router isis
R8(config-if)#inter loo 0
R8(config-if)#ip router isis
R8(config-if)#router bgp 65002
R8(config-router)#bgp router-id 8.8.8.8
R8(config-router)#neighbor 4.4.4.4 remote-as 65002
R8(config-router)#neighbor 4.4.4.4 update-source l 0
*Mar 1 00:36:36.471: %BGP-5-ADJCHANGE: neighbor 4.4.4.4 Up
R8(config-router)#neighbor 7.7.7.7 remote-as 65001
R8(config-router)#neighbor 7.7.7.7 update-source l 0
R8(config-router)#neighbor 7.7.7.7 ebgp-multihop 2
R8(config)#ip route 7.7.7.7 255.255.255.255 202.106.78.7
*Mar 1 00:40:02.115: %BGP-5-ADJCHANGE: neighbor 7.7.7.7 Up
R8(config)#end
R8#write
Building configuration...
[OK]
最後測試R4#ping 202.106.15.11 so
R4#ping 202.106.15.11 source 202.106.48.4 用源地址202.106.48.4 ping 202.106.15.11
R4#ping 202.106.15.11 source 202.106.48.4 用源地址202.106.48.4 ping 202.106.15.11
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.106.15.11, timeout is 2 seconds:
Packet sent with a source address of 202.106.48.4
!!!!!
Sending 5, 100-byte ICMP Echos to 202.106.15.11, timeout is 2 seconds:
Packet sent with a source address of 202.106.48.4
!!!!!
R4#telnet 2.2.2.2 /source-interface f0/1 遠程 以2.2.2.2 做跳板 遠程1.1.1.1
rying 2.2.2.2 ... Open
rying 2.2.2.2 ... Open
User Access Verification
Password:
R2>telnet 1.1.1.1
Trying 1.1.1.1 ... Open
R2>telnet 1.1.1.1
Trying 1.1.1.1 ... Open
User Access Verification 發現進去了
Password:
R1>en
Password:
R1#
R1>en
Password:
R1#
啓動BGP進程手動指定 RID
手動指鄰居（直連鄰居和環回口鄰居）
鄰居shut(鄰居信息會保留)
BGP源檢測：檢查收到包的源地址是不是本地neighbor的地址，不是不能建立鄰居（update-source）
隨機選擇一方建立show tcp bri
兩個AS之間有兩條或以上物理鏈路裏用環回口建立EBGP鄰居，此時要解決鄰居可達；更新源；TTL爲1問題。
兩邊都指默認路由不能建立鄰居關係
BGP中network 一條路由就是要通告這條路由，並且該路由一定要在本地路由表中存在，且要跟實際掩碼。一分鐘的更新時間
從EBGP鄰居學到的路由只要下一跳可達就可以優化。
從IBGP鄰居學到的路由要優化需要下一跳可達（在AS邊界上next-hop-self）；和IGP同步(取消同步條件)。路由反映器：RR從EBGP鄰居收到的路由會轉發給客戶端及非客戶端；RR客戶端收到的路由會轉發給其它客戶端，非客戶端和EBGP鄰居；RR從非客戶端收到的路由會轉發給客戶端和EBGP鄰居，不會給其它非客戶端。
把一個反射器或者簇理解爲一個大路由器，但是成員只有RR知道。命令：neighbor ip route-reflector-client