HCIP_BGP联邦综合实验
实验要求
1、AS1存在两个环回接口，一个地址为192.168.1.0/24该地址不能在任何协议中宣告。
AS3存在两个环回接口，一个地址为192.168.2.0/24该地址不能在任何协议中宣告，最终要求这两个环回接口可以互相通讯。
AS1的另一个环回接口为10.0.0.0/24，AS3的另一个环回接口为11.0.0.0/24
2、整个AS2的IP地址为172.16.0.0/16，请合理划分。
3、AS之间的骨干链路IP地址随意定制。
4、使用BGP协议让整个网络所有设备的环回接口可以互相访问。
5、减少路由条目数量，避免环路出现。
实验步骤
1.网段划分，配IP
[r1]int l0
[r1-LoopBack0]ip address 192.168.1.1 24
[r1-LoopBack0]int l1
[r1-LoopBack1]ip address 10.0.0.1 24
[r1-LoopBack1]int g0/0/0
[r1-GigabitEthernet0/0/0]ip address 12.0.0.1 24[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ip address 12.0.0.2 24
[r2-GigabitEthernet0/0/0]int g0/0/1
[r2-GigabitEthernet0/0/1]ip address 172.16.1.1 29
[r2-GigabitEthernet0/0/1]int g0/0/2
[r2-GigabitEthernet0/0/2]ip address 172.16.1.9 29
[r2-GigabitEthernet0/0/2]int l0
[r2-LoopBack0]ip address 172.16.2.1 24[r3]int g0/0/0
[r3-GigabitEthernet0/0/0]ip address 172.16.1.2 29
[r3-GigabitEthernet0/0/0]int g0/0/1
[r3-GigabitEthernet0/0/1]ip address 172.16.1.17 29
[r3-GigabitEthernet0/0/1]int l0
[r3-LoopBack0]ip address 172.16.3.1 24[r4]int g0/0/0
[r4-GigabitEthernet0/0/0]ip add 172.16.1.18 29
[r4-GigabitEthernet0/0/0]int g0/0/1
[r4-GigabitEthernet0/0/1]ip address 172.16.1.25 29
[r4-GigabitEthernet0/0/1]int l0
[r4-LoopBack0]ip address 172.16.4.1 24[r5]int g0/0/0
[r5-GigabitEthernet0/0/0]ip address 172.16.1.10 29
[r5-GigabitEthernet0/0/0]int g0/0/1
[r5-GigabitEthernet0/0/1]ip address 172.16.1.33 29
[r5-GigabitEthernet0/0/1]int l0
[r5-LoopBack0]ip address 172.16.5.1 24[r6]int g0/0/0
[r6-GigabitEthernet0/0/0]ip address 172.16.1.34 29
[r6-GigabitEthernet0/0/0]int g0/0/1
[r6-GigabitEthernet0/0/1]ip address 172.16.1.41 29
[r6-GigabitEthernet0/0/1]int l0
[r6-LoopBack0]ip address 172.16.6.1 24[r7]int g0/0/0
[r7-GigabitEthernet0/0/0]ip add 172.16.1.42 29
[r7-GigabitEthernet0/0/0]int g0/0/1
[r7-GigabitEthernet0/0/1]ip address 172.16.1.26 29
[r7-LoopBack0]ip address 172.16.7.1 24
[r7-LoopBack0]int g0/0/2
[r7-GigabitEthernet0/0/2]ip address 78.0.0.1 24[r8]int g0/0/0
[r8-GigabitEthernet0/0/0]ip address 78.0.0.2 24
[r8-GigabitEthernet0/0/0]int l0
[r8-LoopBack0]ip address 192.168.2.1 24
[r8-LoopBack0]int l1
[r8-LoopBack1]ip address 11.0.0.1 242.AS 2中所有设备起OSPF
[r2]ospf 1 router-id 2.2.2.2
[r2-ospf-1]a 0
[r2-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255[r7]ospf 1 router-id 7.7.7.7
[r7-ospf-1]a 0
[r7-ospf-1-area-0.0.0.0]network 172.16.0.0 0.0.255.255
3.启用BGP
[r2]bgp 64512
[r2-bgp]router-id 2.2.2.2
[r2-bgp]confederation id 2
[r2-bgp]confederation peer-as 64513
[r2-bgp]peer 12.0.0.1 as-number 1 //r2与r1直连建立EBGP对等体关系
[r2-bgp]peer 172.16.3.1 as-number 64512
[r2-bgp]peer 172.16.3.1 connect-interface LoopBack 0 //r2与r3使用环回接口建立IBGP
[r2-bgp]peer 172.16.5.1 as-number 64513
[r2-bgp]peer 172.16.5.1 connect-interface LoopBack 0
[r2-bgp]peer 172.16.5.1 ebgp-max-hop //r2与r5建立联邦EBGP[r3]bgp 64512
[r3-bgp]router-id 3.3.3.3
[r3-bgp]confederation id 2
[r3-bgp]peer 172.16.2.1 as-number 64512 //r3与r2
[r3-bgp]peer 172.16.2.1 connect-interface LoopBack 0
[r3-bgp]peer 172.16.4.1 as-number 64512
[r3-bgp]peer 172.16.4.1 connect-interface LoopBack 0 //r3与r4[r4]bgp 64512
[r4-bgp]router-id 4.4.4.4
[r4-bgp]confederation id 2
[r4-bgp]confederation peer-as 64513
[r4-bgp]peer 172.16.3.1 as-number 64512
[r4-bgp]peer 172.16.3.1 connect-interface LoopBack 0 //r4与r3
[r4-bgp]peer 172.16.7.1 as 64513
[r4-bgp]peer 172.16.7.1 connect-interface LoopBack 0
[r4-bgp]peer 172.16.7.1 ebgp-max-hop //r4与r7[r5]bgp 64513
[r5-bgp]router-id 5.5.5.5
[r5-bgp]confederation id 2
[r5-bgp]confederation peer-as 64512
[r5-bgp]peer 172.16.2.1 as 64512
[r5-bgp]peer 172.16.2.1 connect-interface LoopBack 0 //r5与r2
[r5-bgp]peer 172.16.2.1 ebgp-max-hop
[r5-bgp]peer 172.16.6.1 as 64513
[r5-bgp]peer 172.16.6.1 connect-interface LoopBack 0 //r5与r6[r6]bgp 64513
[r6-bgp]router-id 6.6.6.6
[r6-bgp]confederation id 2
[r6-bgp]peer 172.16.5.1 as 64513
[r6-bgp]peer 172.16.5.1 connect-interface LoopBack 0 //r6与r5
[r6-bgp]peer 172.16.7.1 as 64513
[r6-bgp]peer 172.16.7.1 connect-interface LoopBack 0 //r6与r7[r7]bgp 64513
[r7-bgp]router-id 7.7.7.7
[r7-bgp]confederation id 2
[r7-bgp]confederation peer-as 64512
[r7-bgp]peer 172.16.6.1 as 64513
[r7-bgp]peer 172.16.6.1 connect-interface LoopBack 0 //r7与r6
[r7-bgp]peer 172.16.4.1 as 64512
[r7-bgp]peer 172.16.4.1 connect-interface LoopBack 0
[r7-bgp]peer 172.16.4.1 ebgp-max-hop //r7与r4
[r7-bgp]peer 78.0.0.2 as 3 //r7与r8[r8]bgp 3
[r8-bgp]router-id 8.8.8.8
[r8-bgp]peer 78.0.0.1 as 2 //r8与r7
4.发布路由，设置路由反射器
[r1]bgp 1
[r1-bgp]network 10.0.0.0 24 //r1发布路由
[r2]bgp 64512
[r2-bgp]peer 172.16.3.1 next-hop-local
[r2-bgp]peer 172.16.5.1 next-hop-local
IBGP水平分割导致r4 r7 r8收不到路由信息
[r3]bgp 64512
[r3-bgp]peer 172.16.2.1 reflect-client //r3设置为路由反射器 r3指定r2为反射客户 形成反射簇
[r4]dis bgp routing-table 10.0.0.0
BGP local router ID : 4.4.4.4
Local AS number : 64512
Paths: 1 available, 1 best, 1 select
BGP routing table entry information of 10.0.0.0/24:
From: 172.16.3.1 (3.3.3.3)
Route Duration: 00h06m32s
Relay IP Nexthop: 172.16.1.17
Relay IP Out-Interface: GigabitEthernet0/0/0
Original nexthop: 172.16.2.1
Qos information : 0x0
AS-path 1, origin igp, MED 0, localpref 100, pref-val 0, valid, internal-confed
, best, select, active, pre 255, IGP cost 2
Originator: 2.2.2.2
Cluster list: 3.3.3.3 //反射来的信息
Advertised to such 1 peers:
172.16.7.1[r6]bgp 64513
[r6-bgp]peer 172.16.7.1 reflect-client //r6设置为路由反射器 r6指定r7为反射客户
[r8]bgp 3
[r8-bgp]network 11.0.0.0 24 //r8发布路由[r7-bgp]peer 172.16.6.1 ne
[r7-bgp]peer 172.16.6.1 next-hop-local
[r7-bgp]peer 172.16.4.1 next-hop-local
5.r2做空接口、汇总
[r2]ip route-static 172.16.0.0 21 N 0
[r2]dis ip ro pro static
Route Flags: R - relay, D - download to fib
------------------------------------------------------------------------------
Public routing table : Static
Destinations : 1 Routes : 1 Configured Routes : 1
Static routing table status :
Destinations : 1 Routes : 1
Destination/Mask Proto Pre Cost Flags NextHop Interface
172.16.0.0/21 Static 60 0 D 0.0.0.0 NULL0
Static routing table status :
Destinations : 0 Routes : 0
[r2]bgp 64512
[r2-bgp]network 172.16.0.0 21
[r2-bgp]dis bgp routing-table
BGP Local router ID is 2.2.2.2
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Total Number of Routes: 3
Network NextHop MED LocPrf PrefVal Path/Ogn
*> 10.0.0.0/24 12.0.0.1 0 0 1i
*>i 11.0.0.0/24 172.16.7.1 0 100 0 (64513) 3i
*> 172.16.0.0/21 0.0.0.0 0 0 i 
[r7]ip route-static 172.16.0.0 21 NULL 0
[r7]bgp 64513
[r7-bgp]network 172.16.0.0 216.r1 r8做GRE隧道
[r1]int t0/0/0
[r1-Tunnel0/0/0]ip address 99.0.0.1 24
[r1-Tunnel0/0/0]tunnel-protocol gre
[r1-Tunnel0/0/0]source 10.0.0.1
[r1-Tunnel0/0/0]description 11.0.0.1
[r1]ip route-static 192.168.2.0 24 99.0.0.2
[r8]int t0/0/0
[r8-Tunnel0/0/0]ip address 99.0.0.2 24
[r8-Tunnel0/0/0]tunnel-protocol gre
[r8-Tunnel0/0/0]source 11.0.0.1
[r8-Tunnel0/0/0]description 10.0.0.1
[r8]ip route-static 192.168.1.0 24 99.0.0.1