Routing Case Study Ver 2

Routing Case Study

InstructionsConfigure the routers according to the above diagram and the requirements below.

Requirements• Configure the interfaces with the IP addresses shown in the diagram.• Configure R2 and R3 to be in EIGRP AS 65100. Add the entire class B

network and disable automatic summarization.• Configure OSPF area 0 on the link between R1 and R2. Do not add the

loopback interfaces on R1 into area 0.• Redistribute all R1 loopbacks and summarize the 172.16.122.0 and

172.16.123.0 loopbacks to the backbone with the most efficient mask.

• Have R3 redistribute its connected routes into EIGRP.• Make sure all loopback interfaces are advertised with the correct mask.• Have R2 originate a default route into the OSPF domain.• Redistribute OSPF into EIGRP.• Configure passive interfaces for EIGRP and OSPF as appropriate.• Filter out 172.16.121.0 and 172.16.121.0 from being advertised to R3.• Configure R2 and R3 in BGP AS 65100. Configure R4 in BGP AS 65400.• Peer R2 and R3 in BGP on their loopback interfaces.• Peer R3 and R4 in BGP.• Have R4 advertise its loopback interfaces into BGP.• Modify the local preference on R3 so that AS 65100 prefers the T1 link to

AS 65400 networks. • Configure R3 to filter out 172.31.8.0 and 172.31.12.0 on the inbound

updates from R4.• Configure R4 with a static route to the 172.16.0.0/16 network via R3.• Configure the IPv6 loopback and tunnel interfaces on R1 and R3. • Enable RIPng on R1 and R3 and configure the advertisement of the IPv6

loopback and tunnel networks.

InstructionsConfigure the routers according to the above diagram and the requirementsbelow.Requirements

• Configure the interfaces with the IP addresses shown in the diag Instructions

Configure the routers according to the above diagram and the requirements

below.

Requirements

• Configure the interfaces with the IP addresses shown in the diagram.

• Configure R2 and R3 to be in EIGRP AS 65100. Add the entire class B network

and disable automatic summarization.

2 – 2 CCNP: Building Scalable Internetworks v5.0 – Skills-Based Assessment 2 Copyright © 2006, Cisco Systems, Inc

• Configure OSPF area 0 on the link between R1 and R2. Also add the loopback

interfaces on R1 into area 0.

• Have R3 redistribute its connected routes into EIGRP.

• Make sure all loopback interfaces are advertised with the correct mask.

• Have R2 originate a default route into the OSPF domain.

• Redistribute OSPF into EIGRP.

• Filter out 172.16.120.0 and 172.16.121.0 from being advertised to R3.

• Configure R2 and R3 in BGP AS 65100. Configure R4 in BGP AS 65400.

• Peer R2 and R3 in BGP on their loopback interfaces.

• Peer R3 and R4 in BGP.

• Have R4 advertise its loopback interfaces into BGP.

• Configure R3 to filter out 172.31.8.0 and 172.31.12.0 on the inbound updates

from R4.

• Configure R4 with a static route to the 172.16.0.0/16 network via R3.

这是今天在网上看到的一道题。

前面的问题都比较简单。但后面的 BGP我还搞不定。特留在这待我把路由卷看完了再解后面几问》

1.配 IP就不说了

2.在R2和R3之间启用 EIGRP，并以 B类地址宣告这几个网段，并取消掉 autosummary

3. 在R1和R2之间启用OSPF Area 0 。并宣告R1的 Loopback端口。

4. 检查各 Loopback端口的地址配置是否正确。

5.在R3上面重发布直连路由进 EIGRP

6.将R2以默认路由方式插入OSPF域。

7.重发布OSPF进 EIGRP。

8.过滤掉这两个段的宣告到R3.

9.配置两个 BGP。

10.Peer R2 and R3 in BGP on their loopback interfaces.这个问题我没弄懂意思，也没有操作成功。

11.R3和R4的 BGP

12.将R4的 LOOPBACK接口宣告进 BGP

13.过滤掉 172.31.8.0 /172.31.12.0的更新包。

14.配置R4到 172.16.0.0/16的静态路由。

R1 Configure:

R1#show runBuilding configuration…Current configuration : 1319 bytes!! Last configuration change at 11:40:24 UTC Tue Sep 1 2009!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname R1!boot-start-markerboot-end-marker!!no aaa new-modelmemory-size iomem 5!!ip cefno ip domain lookup!!!!!!!!!!!!!!!!!!!!!!!interface Loopback120ip address 172.16.120.1 255.255.255.0!interface Loopback121ip address 172.16.121.1 255.255.255.0!interface Loopback122ip address 172.16.122.1 255.255.255.0!interface Loopback123ip address 172.16.123.1 255.255.255.0!interface Serial0/0ip address 172.16.12.1 255.255.255.0serial restart-delay 0clock rate 19200!interface Serial0/1no ip addressshutdownserial restart-delay 0!interface Serial0/2no ip addressshutdownserial restart-delay 0!interface Serial0/3no ip addressshutdownserial restart-delay 0!router ospf 1log-adjacency-changesnetwork 172.16.12.0 0.0.0.255 area 0network 172.16.120.0 0.0.0.255 area 0network 172.16.121.0 0.0.0.255 area 0network 172.16.122.0 0.0.0.255 area 0network 172.16.123.0 0.0.0.255 area 0!ip http serverno ip http secure-server!!!!!control-plane!!!!!!!!!!line con 0exec-timeout 0 0logging synchronousline aux 0line vty 0 4!!end

R1#show run

Building configuration…

Current configuration : 1319 bytes

!

! Last configuration change at 11:40:24 UTC Tue Sep 1 2009

!

version 12.4

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

memory-size iomem 5

!

!

ip cef

no ip domain lookup

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

interface Loopback120

ip address 172.16.120.1 255.255.255.0

!


ip address 172.16.121.1 255.255.255.0

!


ip address 172.16.122.1 255.255.255.0

!


ip address 172.16.123.1 255.255.255.0

!

interface Serial0/0

ip address 172.16.12.1 255.255.255.0

serial restart-delay 0

clock rate 19200

!

interface Serial0/1

no ip address

shutdown


!

interface Serial0/2

no ip address

shutdown


!

interface Serial0/3

no ip address

shutdown


!

router ospf 1

log-adjacency-changes

network 172.16.12.0 0.0.0.255 area 0

network 172.16.120.0 0.0.0.255 area 0

network 172.16.121.0 0.0.0.255 area 0

network 172.16.122.0 0.0.0.255 area 0

network 172.16.123.0 0.0.0.255 area 0

!

ip http server

no ip http secure-server

!

!

!

!

!

control-plane

!

!

!

!

!

!

!

!

!

!

line con 0

exec-timeout 0 0

logging synchronous

line aux 0

line vty 0 4

!

!

end

R2 Configure:

R2#show run



!


!

version 12.4




!

hostname R2

!

boot-start-marker

boot-end-marker

!

!

no aaa new-model

memory-size iomem 5

!

!

ip cef

no ip domain lookup

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

interface Loopback0

ip address 172.16.2.1 255.255.255.0

!

interface Serial0/0

ip address 172.16.12.2 255.255.255.0


!

interface Serial0/1

ip address 172.16.23.2 255.255.255.0


clock rate 19200

!

interface Serial0/2

no ip address

shutdown


!

interface Serial0/3

no ip address

shutdown


!

router eigrp 65100

redistribute ospf 1 metric 100000 10 0 1 1500

network 172.16.0.0

distribute-list 1 out

no auto-summary

!

router ospf 1

log-adjacency-changes

redistribute eigrp 65100

network 172.16.12.0 0.0.0.255 area 0

default-information originate always

!

router bgp 65100

no synchronization

bgp log-neighbor-changes

network 172.16.2.0 mask 255.255.255.0

network 172.16.23.0 mask 255.255.255.0

neighbor 172.16.3.1 remote-as 65100

no auto-summary

!

ip http server


!

!

!

access-list 1 deny 172.16.120.0 0.0.0.255 log

access-list 1 deny 172.16.121.0 0.0.0.255 log

access-list 1 permit any log

!

!

control-plane

!

!

!

!

!

!

!

!

!

!

line con 0

exec-timeout 0 0

logging synchronous

line aux 0

line vty 0 4

!

!

end

R3 Configure:

R3#show run



!


!

version 12.4




!

hostname R3

!

boot-start-marker

boot-end-marker

!

!

no aaa new-model

memory-size iomem 5

!

!

ip cef

no ip domain lookup

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

interface Loopback0

ip address 172.16.3.1 255.255.255.0

!

interface Serial0/0

no ip address

shutdown


!

interface Serial0/1

ip address 172.16.23.3 255.255.255.0


!

interface Serial0/2

no ip address

shutdown


!

interface Serial0/3

no ip address

shutdown


!

interface Serial1/0

no ip address

shutdown


!

interface Serial1/1

ip address 192.168.34.3 255.255.255.0


clock rate 19200

!

interface Serial1/2

no ip address

shutdown


!

interface Serial1/3

no ip address

shutdown


!

router eigrp 65100

redistribute connected

network 172.16.0.0

no auto-summary

!

router bgp 65100

no synchronization


network 172.16.3.0 mask 255.255.255.0

network 172.16.23.0 mask 255.255.255.0



neighbor 192.168.34.4 prefix-list filterout in

no auto-summary

!

ip http server


!

!

!

!

ip prefix-list filterout seq 5 deny 172.31.8.0/24

ip prefix-list filterout seq 10 deny 172.31.12.0/24

!

!

control-plane

!

!

!

!

!

!

!

!

!

!

line con 0

exec-timeout 0 0

logging synchronous

line aux 0

line vty 0 4

!

!

end

R4 Configure:

R4#show run



!


!

version 12.4




!

hostname R4

!

boot-start-marker

boot-end-marker

!

!

no aaa new-model

memory-size iomem 5

!

!

ip cef

no ip domain lookup

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!

!


ip address 172.31.0.1 255.255.255.0

!


ip address 172.31.4.1 255.255.255.0

!


ip address 172.31.8.1 255.255.255.0

!


ip address 172.31.12.1 255.255.255.0

!

interface Serial0/0

ip address 192.168.34.4 255.255.255.0


!

interface Serial0/1

no ip address

shutdown


!

interface Serial0/2

no ip address

shutdown


!

interface Serial0/3

no ip address

shutdown


!

router bgp 65400

no synchronization


network 172.31.0.0 mask 255.255.255.0

network 172.31.4.0 mask 255.255.255.0

network 172.31.8.0 mask 255.255.255.0

network 172.31.12.0 mask 255.255.255.0


no auto-summary

!

ip http server


!

ip route 172.16.0.0 255.255.0.0 Serial0/0

!

!

!

!

control-plane

!

!

!

!

!

!

!

!

!

!

line con 0

exec-timeout 0 0

logging synchronous

line aux 0

line vty 0 4

!

!

end

以上配置并不表示完全正确。因 BGP部分还末系统学习。

以下为部分信息输出：

on R1:

R1#show ip ospf 1 database

OSPF Router with ID (172.16.123.1) (Process ID 1)

Router Link States (Area 0)

Link ID ADV Router Age Seq# Checksum Link count

172.16.2.1 172.16.2.1 1545 0x8000000C 0x0078D2 2

172.16.123.1 172.16.123.1 1738 0x8000000E 0x00139C 6

Type-5 AS External Link States

Link ID ADV Router Age Seq# Checksum Tag

0.0.0.0 172.16.2.1 1282 0x8000000C 0x007E69 1

192.168.34.0 172.16.2.1 212 0×80000003 0x00143F 0

R1#show ip route

Gateway of last resort is 172.16.12.2 to network 0.0.0.0

172.16.0.0/24 is subnetted, 5 subnets

C 172.16.12.0 is directly connected, Serial0/0

C 172.16.120.0 is directly connected, Loopback120




O E2 192.168.34.0/24 [110/20] via 172.16.12.2, 00:03:59, Serial0/0

O*E2 0.0.0.0/0 [110/1] via 172.16.12.2, 02:04:43, Serial0/0

R1#show ip ospf 1 border-routers

OSPF Process 1 internal Routing Table

Codes: i – Intra-area route, I – Inter-area route

i 172.16.2.1 [64] via 172.16.12.2, Serial0/0, ASBR, Area 0, SPF 9

On R2:

R2#show ip ospf 1 neighbor

Neighbor ID Pri State Dead Time Address Interface

172.16.123.1 0 FULL/ - 00:00:31 172.16.12.1 Serial0/0

R2#show ip ospf 1 database router



LS age: 1699

Options: (No TOS-capability, DC)

LS Type: Router Links

Link State ID: 172.16.2.1

Advertising Router: 172.16.2.1

LS Seq Number: 8000000C

Checksum: 0x78D2

Length: 48

AS Boundary Router

Number of Links: 2

Link connected to: another Router (point-to-point)

(Link ID) Neighboring Router ID: 172.16.123.1

(Link Data) Router Interface address: 172.16.12.2

Number of TOS metrics: 0

TOS 0 Metrics: 64

Link connected to: a Stub Network

(Link ID) Network/subnet number: 172.16.12.0

(Link Data) Network Mask: 255.255.255.0


TOS 0 Metrics: 64

LS age: 1895

Options: (No TOS-capability, DC)

LS Type: Router Links

Link State ID: 172.16.123.1

Advertising Router: 172.16.123.1

LS Seq Number: 8000000E

Checksum: 0x139C

Length: 96

Number of Links: 6





TOS 0 Metrics: 1





TOS 0 Metrics: 1





TOS 0 Metrics: 1





TOS 0 Metrics: 1

Link connected to: another Router (point-to-point)

(Link ID) Neighboring Router ID: 172.16.2.1

(Link Data) Router Interface address: 172.16.12.1


TOS 0 Metrics: 64





TOS 0 Metrics: 64

R2# show ip ospf 1 database



Link ID ADV Router Age Seq# Checksum Link count

172.16.2.1 172.16.2.1 1717 0x8000000C 0x0078D2 2

172.16.123.1 172.16.123.1 1912 0x8000000E 0x00139C 6

Type-5 AS External Link States

Link ID ADV Router Age Seq# Checksum Tag

0.0.0.0 172.16.2.1 1454 0x8000000C 0x007E69 1

192.168.34.0 172.16.2.1 384 0×80000003 0x00143F 0

R2#show ip eigrp 65100 interfaces

IP-EIGRP interfaces for process 65100

Xmit Queue Mean Pacing Time Multicast Pending

Interface Peers Un/Reliable SRTT Un/Reliable Flow Timer Routes

Se0/0 0 0/0 0 0/1 0 0

Se0/1 1 0/0 118 0/15 531 0

Lo0 0 0/0 0 0/1 0 0

R2#show ip eigrp 65100 topology

IP-EIGRP Topology Table for AS(65100)/ID(172.16.2.1)

Codes: P – Passive, A – Active, U – Update, Q – Query, R – Reply,

r – reply Status, s – sia Status

P 192.168.34.0/24, 1 successors, FD is 2681856

via 172.16.23.3 (2681856/2169856), Serial0/1


via Connected, Serial0/1


via Connected, Serial0/0


via Connected, Loopback0


via 172.16.23.3 (2297856/128256), Serial0/1


via Redistributed (28160/0)


via Redistributed (28160/0)

R2#

R2#show ip bgp

BGP table version is 3, local router ID is 172.16.2.1

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

*> 172.16.2.0/24 0.0.0.0 0 32768 i

*> 172.16.23.0/24 0.0.0.0 0 32768 i

Gateway of last resort is not set

172.16.0.0/16 is variably subnetted, 8 subnets, 2 masks

C 172.16.23.0/24 is directly connected, Serial0/1


C 172.16.2.0/24 is directly connected, Loopback0

D 172.16.3.0/24 [90/2297856] via 172.16.23.3, 00:08:00, Serial0/1

O 172.16.121.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0

O 172.16.120.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0

O 172.16.123.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0

O 172.16.122.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0

D EX 192.168.34.0/24 [170/2681856] via 172.16.23.3, 00:08:00, Serial0/1

on R3:

R3# show ip route




D 172.16.12.0/24 [90/2681856] via 172.16.23.2, 00:08:17, Serial0/1

D 172.16.2.0/24 [90/2297856] via 172.16.23.2, 00:08:17, Serial0/1

C 172.16.3.0/24 is directly connected, Loopback0

D EX 172.16.123.1/32 [170/2172416] via 172.16.23.2, 00:08:17, Serial0/1

D EX 172.16.122.1/32 [170/2172416] via 172.16.23.2, 00:08:17, Serial0/1


R3#

R4#sh 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



B 172.16.23.0/24 [20/0] via 192.168.34.3, 01:27:12

S 172.16.0.0/16 is directly connected, Serial0/0

B 172.16.3.0/24 [20/0] via 192.168.34.3, 01:27:12

172.31.0.0/24 is subnetted, 4 subnets





C 192.168.34.0/24 is directly connected, Serial0/0ram.

• Configure R2 and R3 to be in EIGRP AS 65100. Add the entire class B networkand disable automatic summarization.2 – 2 CCNP: Building Scalable Internetworks v5.0 – Skills-Based Assessment 2 Copyright © 2006, Cisco Systems, Inc

• Configure OSPF area 0 on the link between R1 and R2. Also add the loopbackinterfaces on R1 into area 0.

• Have R3 redistribute its connected routes into EIGRP.

• Make sure all loopback interfaces are advertised with the correct mask.

• Have R2 originate a default route into the OSPF domain.

• Redistribute OSPF into EIGRP.

• Filter out 172.16.120.0 and 172.16.121.0 from being advertised to R3.

• Configure R2 and R3 in BGP AS 65100. Configure R4 in BGP AS 65400.

• Peer R2 and R3 in BGP on their loopback interfaces.

• Peer R3 and R4 in BGP.

• Have R4 advertise its loopback interfaces into BGP.

• Configure R3 to filter out 172.31.8.0 and 172.31.12.0 on the inbound updatesfrom R4.

• Configure R4 with a static route to the 172.16.0.0/16 network via R3.

这是今天在网上看到的一道题。

前面的问题都比较简单。但后面的 BGP我还搞不定。特留在这待我把路由卷看完了再解后面几问》

1. 配 IP 就不说了2. 在 R2 和 R3 之间启用 EIGRP ，并以 B 类地址宣告这几个网段，并取消掉 autosummary3. 在 R1 和 R2 之间启用 OSPF Area 0 。并宣告 R1 的 Loopback 端口。4. 检查各 Loopback 端口的地址配置是否正确。5. 在 R3 上面重发布直连路由进 EIGRP6. 将 R2 以默认路由方式插入 OSPF 域。7. 重发布 OSPF 进 EIGRP 。8. 过滤掉这两个段的宣告到 R3.9. 配置两个 BGP 。10.Peer R2 and R3 in BGP on their loopback interfaces. 这个问题我没弄懂意思，也没有操作成功。11.R3 和 R4 的 BGP12. 将 R4 的 LOOPBACK 接口宣告进 BGP13. 过滤掉 172.31.8.0 /172.31.12.0 的更新包。14.配置R4到 172.16.0.0/16的静态路由。

R1 Configure:

R1#show runBuilding configuration…Current configuration : 1319 bytes!! Last configuration change at 11:40:24 UTC Tue Sep 1 2009!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname R1!boot-start-markerboot-end-marker!!no aaa new-modelmemory-size iomem 5!!ip cefno ip domain lookup!!!!!!!!!!!!!!!!!!!!!!!

interface Loopback120ip address 172.16.120.1 255.255.255.0!interface Loopback121ip address 172.16.121.1 255.255.255.0!interface Loopback122ip address 172.16.122.1 255.255.255.0!interface Loopback123ip address 172.16.123.1 255.255.255.0!interface Serial0/0ip address 172.16.12.1 255.255.255.0serial restart-delay 0clock rate 19200!interface Serial0/1no ip addressshutdownserial restart-delay 0!interface Serial0/2no ip addressshutdownserial restart-delay 0!interface Serial0/3no ip addressshutdownserial restart-delay 0!router ospf 1log-adjacency-changesnetwork 172.16.12.0 0.0.0.255 area 0network 172.16.120.0 0.0.0.255 area 0network 172.16.121.0 0.0.0.255 area 0network 172.16.122.0 0.0.0.255 area 0network 172.16.123.0 0.0.0.255 area 0!ip http serverno ip http secure-server!!!!!control-plane!!!!!!!!!!line con 0exec-timeout 0 0logging synchronousline aux 0

line vty 0 4!!end

R1#show run

Building configuration…Current configuration : 1319 bytes!! Last configuration change at 11:40:24 UTC Tue Sep 1 2009!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname R1!boot-start-markerboot-end-marker!!no aaa new-modelmemory-size iomem 5!!ip cefno ip domain lookup!!!!!!!!!!!!!!!!!!!!!!!interface Loopback120ip address 172.16.120.1 255.255.255.0!interface Loopback121ip address 172.16.121.1 255.255.255.0!interface Loopback122ip address 172.16.122.1 255.255.255.0!interface Loopback123ip address 172.16.123.1 255.255.255.0

!interface Serial0/0ip address 172.16.12.1 255.255.255.0serial restart-delay 0clock rate 19200!interface Serial0/1no ip addressshutdownserial restart-delay 0!interface Serial0/2no ip addressshutdownserial restart-delay 0!interface Serial0/3no ip addressshutdownserial restart-delay 0!router ospf 1log-adjacency-changesnetwork 172.16.12.0 0.0.0.255 area 0network 172.16.120.0 0.0.0.255 area 0network 172.16.121.0 0.0.0.255 area 0network 172.16.122.0 0.0.0.255 area 0network 172.16.123.0 0.0.0.255 area 0!ip http serverno ip http secure-server!!!!!control-plane!!!!!!!!!!line con 0exec-timeout 0 0logging synchronousline aux 0line vty 0 4!!endR2 Configure:R2#show runBuilding configuration…Current configuration : 1498 bytes!! Last configuration change at 14:49:04 UTC Tue Sep 1 2009!

version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname R2!boot-start-markerboot-end-marker!!no aaa new-modelmemory-size iomem 5!!ip cefno ip domain lookup!!!!!!!!!!!!!!!!!!!!!!!interface Loopback0ip address 172.16.2.1 255.255.255.0!interface Serial0/0ip address 172.16.12.2 255.255.255.0serial restart-delay 0!interface Serial0/1ip address 172.16.23.2 255.255.255.0serial restart-delay 0clock rate 19200!interface Serial0/2no ip addressshutdownserial restart-delay 0!interface Serial0/3no ip addressshutdownserial restart-delay 0!

router eigrp 65100redistribute ospf 1 metric 100000 10 0 1 1500network 172.16.0.0distribute-list 1 outno auto-summary!router ospf 1log-adjacency-changesredistribute eigrp 65100network 172.16.12.0 0.0.0.255 area 0default-information originate always!router bgp 65100no synchronizationbgp log-neighbor-changesnetwork 172.16.2.0 mask 255.255.255.0network 172.16.23.0 mask 255.255.255.0neighbor 172.16.3.1 remote-as 65100no auto-summary!ip http serverno ip http secure-server!!!access-list 1 deny 172.16.120.0 0.0.0.255 logaccess-list 1 deny 172.16.121.0 0.0.0.255 logaccess-list 1 permit any log!!control-plane!!!!!!!!!!line con 0exec-timeout 0 0logging synchronousline aux 0line vty 0 4!!endR3 Configure:R3#show runBuilding configuration…Current configuration : 1662 bytes!! Last configuration change at 16:30:45 UTC Tue Sep 1 2009!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname R3

!boot-start-markerboot-end-marker!!no aaa new-modelmemory-size iomem 5!!ip cefno ip domain lookup!!!!!!!!!!!!!!!!!!!!!!!interface Loopback0ip address 172.16.3.1 255.255.255.0!interface Serial0/0no ip addressshutdownserial restart-delay 0!interface Serial0/1ip address 172.16.23.3 255.255.255.0serial restart-delay 0!interface Serial0/2no ip addressshutdownserial restart-delay 0!interface Serial0/3no ip addressshutdownserial restart-delay 0!interface Serial1/0no ip addressshutdownserial restart-delay 0!interface Serial1/1

ip address 192.168.34.3 255.255.255.0serial restart-delay 0clock rate 19200!interface Serial1/2no ip addressshutdownserial restart-delay 0!interface Serial1/3no ip addressshutdownserial restart-delay 0!router eigrp 65100redistribute connectednetwork 172.16.0.0no auto-summary!router bgp 65100no synchronizationbgp log-neighbor-changesnetwork 172.16.3.0 mask 255.255.255.0network 172.16.23.0 mask 255.255.255.0neighbor 172.16.2.1 remote-as 65100neighbor 192.168.34.4 remote-as 65400neighbor 192.168.34.4 prefix-list filterout inno auto-summary!ip http serverno ip http secure-server!!!!ip prefix-list filterout seq 5 deny 172.31.8.0/24ip prefix-list filterout seq 10 deny 172.31.12.0/24!!control-plane!!!!!!!!!!line con 0exec-timeout 0 0logging synchronousline aux 0line vty 0 4!!endR4 Configure:R4#show runBuilding configuration…Current configuration : 1382 bytes

!! Last configuration change at 14:46:06 UTC Tue Sep 1 2009!version 12.4service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname R4!boot-start-markerboot-end-marker!!no aaa new-modelmemory-size iomem 5!!ip cefno ip domain lookup!!!!!!!!!!!!!!!!!!!!!!!interface Loopback200ip address 172.31.0.1 255.255.255.0!interface Loopback204ip address 172.31.4.1 255.255.255.0!interface Loopback208ip address 172.31.8.1 255.255.255.0!interface Loopback212ip address 172.31.12.1 255.255.255.0!interface Serial0/0ip address 192.168.34.4 255.255.255.0serial restart-delay 0!interface Serial0/1no ip addressshutdown

serial restart-delay 0!interface Serial0/2no ip addressshutdownserial restart-delay 0!interface Serial0/3no ip addressshutdownserial restart-delay 0!router bgp 65400no synchronizationbgp log-neighbor-changesnetwork 172.31.0.0 mask 255.255.255.0network 172.31.4.0 mask 255.255.255.0network 172.31.8.0 mask 255.255.255.0network 172.31.12.0 mask 255.255.255.0neighbor 192.168.34.3 remote-as 65100no auto-summary!ip http serverno ip http secure-server!ip route 172.16.0.0 255.255.0.0 Serial0/0!!!!control-plane!!!!!!!!!!line con 0exec-timeout 0 0logging synchronousline aux 0line vty 0 4!!end以上配置并不表示完全正确。因 BGP部分还末系统学习。以下为部分信息输出：on R1:R1#show ip ospf 1 databaseOSPF Router with ID (172.16.123.1) (Process ID 1)Router Link States (Area 0)Link ID ADV Router Age Seq# Checksum Link count172.16.2.1 172.16.2.1 1545 0x8000000C 0x0078D2 2172.16.123.1 172.16.123.1 1738 0x8000000E 0x00139C 6Type-5 AS External Link StatesLink ID ADV Router Age Seq# Checksum Tag0.0.0.0 172.16.2.1 1282 0x8000000C 0x007E69 1192.168.34.0 172.16.2.1 212 0×80000003 0x00143F 0

R1#show ip routeGateway of last resort is 172.16.12.2 to network 0.0.0.0172.16.0.0/24 is subnetted, 5 subnetsC 172.16.12.0 is directly connected, Serial0/0C 172.16.120.0 is directly connected, Loopback120C 172.16.121.0 is directly connected, Loopback121C 172.16.122.0 is directly connected, Loopback122C 172.16.123.0 is directly connected, Loopback123O E2 192.168.34.0/24 [110/20] via 172.16.12.2, 00:03:59, Serial0/0O*E2 0.0.0.0/0 [110/1] via 172.16.12.2, 02:04:43, Serial0/0R1#show ip ospf 1 border-routersOSPF Process 1 internal Routing TableCodes: i – Intra-area route, I – Inter-area routei 172.16.2.1 [64] via 172.16.12.2, Serial0/0, ASBR, Area 0, SPF 9On R2:R2#show ip ospf 1 neighborNeighbor ID Pri State Dead Time Address Interface172.16.123.1 0 FULL/ - 00:00:31 172.16.12.1 Serial0/0R2#show ip ospf 1 database routerOSPF Router with ID (172.16.2.1) (Process ID 1)Router Link States (Area 0)LS age: 1699Options: (No TOS-capability, DC)LS Type: Router LinksLink State ID: 172.16.2.1Advertising Router: 172.16.2.1LS Seq Number: 8000000CChecksum: 0x78D2Length: 48AS Boundary RouterNumber of Links: 2Link connected to: another Router (point-to-point)(Link ID) Neighboring Router ID: 172.16.123.1(Link Data) Router Interface address: 172.16.12.2Number of TOS metrics: 0TOS 0 Metrics: 64Link connected to: a Stub Network(Link ID) Network/subnet number: 172.16.12.0(Link Data) Network Mask: 255.255.255.0Number of TOS metrics: 0TOS 0 Metrics: 64LS age: 1895Options: (No TOS-capability, DC)LS Type: Router LinksLink State ID: 172.16.123.1Advertising Router: 172.16.123.1LS Seq Number: 8000000EChecksum: 0x139CLength: 96Number of Links: 6Link connected to: a Stub Network(Link ID) Network/subnet number: 172.16.123.1(Link Data) Network Mask: 255.255.255.255Number of TOS metrics: 0TOS 0 Metrics: 1Link connected to: a Stub Network(Link ID) Network/subnet number: 172.16.122.1(Link Data) Network Mask: 255.255.255.255Number of TOS metrics: 0TOS 0 Metrics: 1Link connected to: a Stub Network(Link ID) Network/subnet number: 172.16.121.1

(Link Data) Network Mask: 255.255.255.255Number of TOS metrics: 0TOS 0 Metrics: 1Link connected to: a Stub Network(Link ID) Network/subnet number: 172.16.120.1(Link Data) Network Mask: 255.255.255.255Number of TOS metrics: 0TOS 0 Metrics: 1Link connected to: another Router (point-to-point)(Link ID) Neighboring Router ID: 172.16.2.1(Link Data) Router Interface address: 172.16.12.1Number of TOS metrics: 0TOS 0 Metrics: 64Link connected to: a Stub Network(Link ID) Network/subnet number: 172.16.12.0(Link Data) Network Mask: 255.255.255.0Number of TOS metrics: 0TOS 0 Metrics: 64R2# show ip ospf 1 databaseOSPF Router with ID (172.16.2.1) (Process ID 1)Router Link States (Area 0)Link ID ADV Router Age Seq# Checksum Link count172.16.2.1 172.16.2.1 1717 0x8000000C 0x0078D2 2172.16.123.1 172.16.123.1 1912 0x8000000E 0x00139C 6Type-5 AS External Link StatesLink ID ADV Router Age Seq# Checksum Tag0.0.0.0 172.16.2.1 1454 0x8000000C 0x007E69 1192.168.34.0 172.16.2.1 384 0×80000003 0x00143F 0R2#show ip eigrp 65100 interfacesIP-EIGRP interfaces for process 65100Xmit Queue Mean Pacing Time Multicast PendingInterface Peers Un/Reliable SRTT Un/Reliable Flow Timer RoutesSe0/0 0 0/0 0 0/1 0 0Se0/1 1 0/0 118 0/15 531 0Lo0 0 0/0 0 0/1 0 0R2#show ip eigrp 65100 topologyIP-EIGRP Topology Table for AS(65100)/ID(172.16.2.1)Codes: P – Passive, A – Active, U – Update, Q – Query, R – Reply,r – reply Status, s – sia StatusP 192.168.34.0/24, 1 successors, FD is 2681856via 172.16.23.3 (2681856/2169856), Serial0/1P 172.16.23.0/24, 1 successors, FD is 2169856via Connected, Serial0/1P 172.16.12.0/24, 1 successors, FD is 2169856via Connected, Serial0/0P 172.16.2.0/24, 1 successors, FD is 128256via Connected, Loopback0P 172.16.3.0/24, 1 successors, FD is 2297856via 172.16.23.3 (2297856/128256), Serial0/1P 172.16.123.1/32, 1 successors, FD is 28160via Redistributed (28160/0)P 172.16.122.1/32, 1 successors, FD is 28160via Redistributed (28160/0)R2#R2#show ip bgpBGP table version is 3, local router ID is 172.16.2.1Status codes: s suppressed, d damped, h history, * valid, > best, i – internal,r RIB-failure, S StaleOrigin codes: i – IGP, e – EGP, ? – incompleteNetwork Next Hop Metric LocPrf Weight Path*> 172.16.2.0/24 0.0.0.0 0 32768 i*> 172.16.23.0/24 0.0.0.0 0 32768 i

Gateway of last resort is not set172.16.0.0/16 is variably subnetted, 8 subnets, 2 masksC 172.16.23.0/24 is directly connected, Serial0/1C 172.16.12.0/24 is directly connected, Serial0/0C 172.16.2.0/24 is directly connected, Loopback0D 172.16.3.0/24 [90/2297856] via 172.16.23.3, 00:08:00, Serial0/1O 172.16.121.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0O 172.16.120.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0O 172.16.123.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0O 172.16.122.1/32 [110/65] via 172.16.12.1, 02:08:45, Serial0/0D EX 192.168.34.0/24 [170/2681856] via 172.16.23.3, 00:08:00, Serial0/1on R3:R3# show ip route


172.16.0.0/16 is variably subnetted, 6 subnets, 2 masksC 172.16.23.0/24 is directly connected, Serial0/1D 172.16.12.0/24 [90/2681856] via 172.16.23.2, 00:08:17, Serial0/1D 172.16.2.0/24 [90/2297856] via 172.16.23.2, 00:08:17, Serial0/1C 172.16.3.0/24 is directly connected, Loopback0D EX 172.16.123.1/32 [170/2172416] via 172.16.23.2, 00:08:17, Serial0/1D EX 172.16.122.1/32 [170/2172416] via 172.16.23.2, 00:08:17, Serial0/1C 192.168.34.0/24 is directly connected, Serial1/1R3#R4#sh ip routeCodes: C – connected, S – static, R – RIP, M – mobile, B – BGPD – EIGRP, EX – EIGRP external, O – OSPF, IA – OSPF inter areaN1 – OSPF NSSA external type 1, N2 – OSPF NSSA external type 2E1 – OSPF external type 1, E2 – OSPF external type 2i – IS-IS, su – IS-IS summary, L1 – IS-IS level-1, L2 – IS-IS level-2ia – IS-IS inter area, * – candidate default, U – per-user static routeo – ODR, P – periodic downloaded static routeGateway of last resort is not set172.16.0.0/16 is variably subnetted, 3 subnets, 2 masksB 172.16.23.0/24 [20/0] via 192.168.34.3, 01:27:12S 172.16.0.0/16 is directly connected, Serial0/0B 172.16.3.0/24 [20/0] via 192.168.34.3, 01:27:12172.31.0.0/24 is subnetted, 4 subnetsC 172.31.0.0 is directly connected, Loopback200C 172.31.4.0 is directly connected, Loopback204C 172.31.8.0 is directly connected, Loopback208C 172.31.12.0 is directly connected, Loopback212C 192.168.34.0/24 is directly connected, Serial0/0

----------------R1--------------------------

enable

config t

host R1

line console 0logg sy

exec-time 0 0exit

interface lo 120ip add 172.16.120.1 255.255.255.0no shutexit




interface s0/0ip add 172.16.12.1 255.255.255.0clock rate 64000no shutexit

----------------R2--------------------------

enable

config t

host R2

line console 0logg syexec-time 0 0exit


interface s0/0ip add 172.16.12.2 255.255.255.0no shutexit

interface s0/1ip add 172.16.23.2 255.255.255.0clock rate 64000no shutexit

----------------R3--------------------------

enable

config t

host R3





----------------R4--------------------------

enable

config t

host R4







按要求的路由配置：--------------------R1----------------------

router ospf 1network 172.16.120.0 0.0.0.255 area 0network 172.16.121.0 0.0.0.255 area 0network 172.16.122.0 0.0.0.255 area 0network 172.16.123.0 0.0.0.255 area 0network 172.16.12.0 0.0.0.255 area 0exit

ip route 172.31.0.0 255.255.0.0 172.16.12.2

--------------------R2----------------------router ospf 1network 172.16.12.0 0.0.0.255 area 0

redistribute eigrp 65100 metric 30 metric-type 1 subnets

exit

access-list 1 deny 172.16.120.0 0.0.0.255access-list 1 deny 172.16.121.0 0.0.0.255access-list 1 permit any

router eigrp 65100no auto-summary network 172.16.2.0 0.0.0.255network 172.16.23.0 0.0.0.255redistribute ospf 1 metric 1000 100 255 1 1500redistribute staticdistribute-list 1 out Serial0/1exitip route 0.0.0.0 0.0.0.0 172.16.12.1

router bgp 65100no synchronizationbgp log-neighbor-changesneighbor 172.16.3.1 remote-as 65100neighbor 172.16.3.1 update-source Loopback0neighbor 172.16.3.1 next-hop-selfexit

--------------------R3----------------------router eigrp 65100no auto-summary network 172.16.3.0 0.0.0.255network 172.16.23.0 0.0.0.255redistribute connected exit

access-list 1 deny 172.31.8.0 0.0.0.255access-list 1 permit any

router bgp 65100no synchronizationneighbor 172.16.2.1 remote-as 65100neighbor 172.16.2.1 update-source Loopback0

neighbor 172.16.2.1 next-hop-selfneighbor 192.168.34.4 remote-as 65400neighbor 192.168.34.4 distribut-list 1 inexit

--------------------R4----------------------router bgp 65400no synchronizationneighbor 192.168.34.3 remote-as 65100network 172.31.0.0 mask 255.255.255.0network 172.31.4.0 mask 255.255.255.0network 172.31.8.0 mask 255.255.255.0network 172.31.12.0 mask 255.255.255.0exit

ip route 172.16.0.0 255.255.0.0 192.168.34.3

最终各个路由器的路由表：R1#show ip route Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGPi - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2ia - IS-IS inter area, * - candidate default, U - per-user static routeo - ODR, P - periodic downloaded static route


172.16.0.0/24 is subnetted, 8 subnetsO E1 172.16.23.0 [110/94] via 172.16.12.2, 00:19:53, Serial0/0C 172.16.12.0 is directly connected, Serial0/0O E1 172.16.2.0 [110/94] via 172.16.12.2, 00:19:53, Serial0/0O E1 172.16.3.0 [110/94] via 172.16.12.2, 00:19:53, Serial0/0C 172.16.120.0 is directly connected, Loopback120C 172.16.121.0 is directly connected, Loopback121C 172.16.122.0 is directly connected, Loopback122C 172.16.123.0 is directly connected, Loopback123S 172.31.0.0/16 [1/0] via 172.16.12.2O E1 192.168.34.0/24 [110/94] via 172.16.12.2, 00:19:53, Serial0/0

R2#show ip route(R2上的 172.31.8.0/24的路由过滤掉了)Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGPD - 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, E - EGPi - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2ia - IS-IS inter area, * - candidate default, U - per-user static routeo - ODR, P - periodic downloaded static route


172.16.0.0/16 is variably subnetted, 8 subnets, 2 masksC 172.16.23.0/24 is directly connected, Serial0/1C 172.16.12.0/24 is directly connected, Serial0/0C 172.16.2.0/24 is directly connected, Loopback0D 172.16.3.0/24 [90/2297856] via 172.16.23.3, 00:20:20, Serial0/1O 172.16.121.1/32 [110/65] via 172.16.12.1, 00:20:18, Serial0/0O 172.16.120.1/32 [110/65] via 172.16.12.1, 00:20:18, Serial0/0O 172.16.123.1/32 [110/65] via 172.16.12.1, 00:20:18, Serial0/0O 172.16.122.1/32 [110/65] via 172.16.12.1, 00:20:18, Serial0/0172.31.0.0/24 is subnetted, 3 subnetsB 172.31.0.0 [200/0] via 172.16.3.1, 00:17:07B 172.31.4.0 [200/0] via 172.16.3.1, 00:17:07B 172.31.12.0 [200/0] via 172.16.3.1, 00:17:07D EX 192.168.34.0/24 [170/2681856] via 172.16.23.3, 00:20:20, Serial0/1S* 0.0.0.0/0 [1/0] via 172.16.12.1

R3#show ip route（R3上的 172.16.120.0/24 172.16.121.0/24,172.31.8.0/24的路由过滤掉了）Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGPi - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2ia - IS-IS inter area, * - candidate default, U - per-user static routeo - ODR, P - periodic downloaded static route


172.16.0.0/16 is variably subnetted, 6 subnets, 2 masksC 172.16.23.0/24 is directly connected, Serial0/1D EX 172.16.12.0/24 [170/3097600] via 172.16.23.2, 00:20:48, Serial0/1D 172.16.2.0/24 [90/2297856] via 172.16.23.2, 00:20:48, Serial0/1C 172.16.3.0/24 is directly connected, Loopback0D EX 172.16.123.1/32 [170/3097600] via 172.16.23.2, 00:20:48, Serial0/1D EX 172.16.122.1/32 [170/3097600] via 172.16.23.2, 00:20:48, Serial0/1172.31.0.0/24 is subnetted, 3 subnetsB 172.31.0.0 [20/0] via 192.168.34.4, 00:17:37B 172.31.4.0 [20/0] via 192.168.34.4, 00:17:37B 172.31.12.0 [20/0] via 192.168.34.4, 00:17:37C 192.168.34.0/24 is directly connected, Serial0/0D*EX 0.0.0.0/0 [170/2681856] via 172.16.23.2, 00:20:48, Serial0/1

R4# 00:06:17: %BGP-5-ADJCHANGE: neighbor 192.168.34.3 Up

R4# show ip routeCodes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGPD - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGPi - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2ia - IS-IS inter area, * - candidate default, U - per-user static routeo - ODR, P - periodic downloaded static route


S 172.16.0.0/16 [1/0] via 192.168.34.3172.31.0.0/24 is subnetted, 4 subnetsC 172.31.0.0 is directly connected, Loopback200C 172.31.4.0 is directly connected, Loopback204C 172.31.8.0 is directly connected, Loopback208C 172.31.12.0 is directly connected, Loopback212C 192.168.34.0/24 is directly connected, Serial0/0

Documents

Routing Case Study Ver 2