3.6实验4:配置帧中继网络
实验内容
主要是练习点到多点和点到点的帧继基本配置命令。
l 安照图3-7 结构配置点到多点和点到点的帧中继网络。
l R5到R2和R3使用静态PVC映射。
l R5到R4之间使用动态PVC映射。
3.6.2 实验拓扑
安照图3-7这个拓扑连接好设备。
图3-7 实验拓扑
3.6.3 所需设备
l 5台router,其中一台配置为帧中继交换机。
l 背对背线缆4条。
3.6.4 实验步骤
第1步 配置帧中继封装和子接口
encapsulation frame-relay [ cisco | ietf ]
interface s1/0.1[ point-to-point | multipoint ]
第2步 配置LMI类型（本实验中采用自动识别）
frame-relay lmi-type[ ansi | cisco | q933i ]
第3步 配置地址映射为动态or 静态
frame-relay map protocol [ ip | dec | appletalk | xns | ipx | vines | clns | bridge | llc2 | dlsw ] next_hop_address [ broadcast ] [ ietf | cisco ]
frame-relay interface-dlci dlci_number
第4步 关掉水平分割
在接口下no ip split-horizon
第5步 配置EIGRP,并关闭自动汇总。
router eigrp as_number
network network_address subnet_mask
no auto-summary
第6步 检查配置，检查路由。
3.6.5 完整配置
例3-13 R5的配置
hostname R5
!
interface Loopback1
ip address 172.16.5.1 255.255.255.0
!
interface Serial1/0
no ip address
encapsulation frame-relay
no ip split-horizon
no fair-queue
serial restart_delay 0
!
interface Serial1/0.1 multipoint
ip address 172.16.1.5 255.255.255.0
frame-relay map ip 172.16.1.3 503 broadcast
frame-relay map ip 172.16.1.2 502 broadcast
!
interface Serial1/0.2 multipoint
ip address 172.16.16.5 255.255.255.0
frame-relay interface-dlci 504
!
router eigrp 100
network 172.16.1.0 0.0.0.255
network 172.16.5.0 0.0.0.255
network 172.16.16.0 0.0.0.255
no auto-summary
no eigrp log-neighbor-changes
!
例3-14 R2的配置
hostname R2
!
interface Loopback1
ip address 172.16.2.1 255.255.255.0
!
interface Serial1/0
ip address 172.16.1.2 255.255.255.0
encapsulation frame-relay
serial restart_delay 0
no arp frame-relay
frame-relay map ip 172.16.1.3 205 broadcast
frame-relay map ip 172.16.1.5 205 broadcast
no frame-relay inverse-arp
!
router eigrp 100
network 172.16.1.0 0.0.0.255
network 172.16.2.0 0.0.0.255
no auto-summary
!
例3-15 R3的配置
hostname R3
!
interface Loopback1
ip address 172.16.3.1 255.255.255.0
!
interface Serial1/0
ip address 172.16.1.3 255.255.255.0
encapsulation frame-relay
serial restart_delay 0
no arp frame-relay
frame-relay map ip 172.16.1.2 205 broadcast
frame-relay map ip 172.16.1.5 205 broadcast
no frame-relay inverse-arp
!
router eigrp 100
network 172.16.1.0 0.0.0.255
network 172.16.3.0 0.0.0.255
no auto-summary
!
例3-16 R4的配置
hostname R4
!
interface Loopback1
ip address 172.16.4.1 255.255.255.0
!
interface Serial1/0
ip address 172.16.16.4 255.255.255.0
encapsulation frame-relay
serial restart_delay 0
frame-relay interface-dlci 405
!
router eigrp 100
network 172.16.4.0 0.0.0.255
network 172.16.16.0 0.0.0.255
no auto-summary
no eigrp log-neighbor-changes
!
3.6.6 验证配置
l show ip route 显示路由信息，可以看到路由表是否正确。例3-16是在R5上执行该命令的结果。
l show ip eigrp neighbors 验证EIGRP工作是否正常，是否建立了正确的邻居关系，例3-17.
例3-17 R5上执行show ip route 的结果
R5#sho ip route
Codes: C - connected, S - static, I - IGRP, 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, E - EGP
i - IS-IS, 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
172.16.0.0/24 is subnetted, 6 subnets
C 172.16.16.0 is directly connected, Serial1/0.2
D 172.16.4.0 [90/2297856] via 172.16.16.4, 00:11:18, Serial1/0.2
C 172.16.5.0 is directly connected, Loopback1
C 172.16.1.0 is directly connected, Serial1/0.1
D 172.16.2.0 [90/2297856] via 172.16.1.2, 00:11:18, Serial1/0.1
D 172.16.3.0 [90/2297856] via 172.16.1.3, 00:11:18, Serial1/0.1
R5#
例3-16
R5#sho ip eigrp neighbors
IP-EIGRP neighbors for process 100
H Address Interface Hold Uptime SRTT RTOQSeq Type
（sec） （ms） Cnt Num
2 172.16.16.4 Se1/0.2 137 00:13:42256153602
1 172.16.1.3 Se1/0.1 172 00:14:08297178203
0 172.16.1.2 Se1/0.1 164 00:15:55215129005
R5#
