CISCO路由器ISIS和BGP混合组网实例(一)

samwang816

CISCO路由器ISIS和BGP混合组网实例(一)

本实例共有5台7200路由器，分别为R1、R2、R3、R4、R5，R1、R2和R3组成AS100自治域，R5为AS10自治域，R4为AS20自治域，在AS100自治域内，启用了ISIS动态路由协议，R1为R3和R2的反射器，此例为典型的三家ISP互连的骨干路由器配置，在本例中，我们也可将AS10和AS20像AS100那样做得大一点，在内部也启用ISIS等态路由协议，OSPF的例子就不讲了，也ISIS很像。本实例的目的是三个自治域的所有IP地址都能互相PING通。
借此机会，感谢小凡的CISCO路由模拟器，本实例就是在它的帮助下完成的，我的电脑是PIII 1G，512M MEM，运行5台7200路由器很不错，就是在查看配置文件内容是有点慢。
一、网络拓扑图


二、各路由器配置
1、  R1配置和测试

Current configuration : 2418 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname r1
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
!
no ip domain lookup
!
ip cef
ip audit po max-events 100
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.0
ip router isis test
!
interface FastEthernet0/0
ip address 10.10.11.1 255.255.255.0
ip router isis test
duplex full
!
interface Ethernet1/0
ip address 10.10.10.1 255.255.255.0
ip router isis test
duplex full
!
interface Ethernet1/1
no ip address
shutdown
duplex half
!
interface Ethernet1/2
no ip address
shutdown
duplex half
!
interface Ethernet1/3
no ip address
shutdown
duplex half
!
interface Serial2/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial2/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial2/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial2/3
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/0
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/1
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/2
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/3
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/4
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/5
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/6
no ip address
shutdown
serial restart-delay 0
!
interface Serial3/7
no ip address
shutdown
serial restart-delay 0
!
interface ATM4/0
no ip address
shutdown
no atm ilmi-keepalive
!
interface GigabitEthernet5/0
no ip address
shutdown
negotiation auto
!
router isis test
net 49.0001.0010.0100.1001.00
!
!
router bgp 100
no synchronization
bgp log-neighbor-changes
neighbor 10.10.10.2 remote-as 100
neighbor 10.10.10.2 route-reflector-client
neighbor 10.10.10.2 next-hop-self
neighbor 10.10.11.2 remote-as 100
neighbor 10.10.11.2 route-reflector-client
neighbor 10.10.11.2 next-hop-self
no auto-summary
!
ip classless
no ip http server
no ip http secure-server
!
!
gatekeeper
shutdown
!
!
line con 0
exec-timeout 0 0
logging synchronous
stopbits 1
line aux 0
stopbits 1
line vty 0 4
login
!
!
end

r1#      show ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

1.0.0.0/24 is subnetted, 1 subnets
C       1.1.1.0 is directly connected, Loopback0
2.0.0.0/24 is subnetted, 1 subnets
i L1    2.2.2.0 [115/20] via 10.10.11.2, FastEthernet0/0, test
3.0.0.0/24 is subnetted, 1 subnets
i L1    3.3.3.0 [115/20] via 10.10.10.2, Ethernet1/0, test
4.0.0.0/24 is subnetted, 1 subnets
B       4.4.4.0 [200/0] via 10.10.11.2, 00:43:27
5.0.0.0/24 is subnetted, 1 subnets
B       5.5.5.0 [200/0] via 10.10.10.2, 00:43:44
6.0.0.0/24 is subnetted, 1 subnets
B       6.6.6.0 [200/0] via 10.10.11.2, 00:41:48
7.0.0.0/24 is subnetted, 1 subnets
B       7.7.7.0 [200/0] via 10.10.10.2, 00:41:18
10.0.0.0/24 is subnetted, 4 subnets
B       10.10.9.0 [200/0] via 10.10.10.2, 00:43:44
C       10.10.10.0 is directly connected, Ethernet1/0
C       10.10.11.0 is directly connected, FastEthernet0/0
B       10.10.12.0 [200/0] via 10.10.11.2, 00:43:27
r1#  ping 5.5.5.5

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 5.5.5.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 648/685/764 ms
r1#ping 4.4.4.4

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 4.4.4.4, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 336/388/476 ms
r1#ping 3.3.3.3

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 3.3.3.3, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 72/235/388 ms
r1#ping 2.2.2.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 2.2.2.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 96/239/476 ms
r1#ping 1.1.1.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/3/4 ms


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