2009-06-24 01:46:33
OSPF定义了3种网络：点到点、广播、非广播多路访问 在非广播多路访问环境中，接口又可以选择broadcast、non-broadcast.. 类别：路由|阅读(386)|回复(1)|赞(0)阅读全文>> 原创
实验：EIGRP浮动汇总路由
2009-06-22 01:42:14 实验拓扑：
接口连接： Router1 S0/0 <----> Router2 S0/0 Router2 S0/1 <----> Router3 S0/0 Router1 S0/1 <----> Router4 S0/0 Router3 S0/1 <----> Router4 S0/1 VPCS V0/1 <----> Router1 E1/0 VPCS V0/2 <----> Router3 E1/0
实验原理： 在R1\\R2\\R3\\R4上均运行EIGRP路由协议。R4通过S0/1向R3通告一条0.0.0.0 0.0.0.0的汇总路由，并将这条浮动路由的管理距离设置为250，于是在网络连通的情况下R3上到达200.1.1.0/24网段的路由经过R2，而 在R2与R3链路故障的时候，通过R3前往200.1.1.0/24的数据包会通过R4（R3拓扑表中，默认路由由A变为P） 关键配置： R1: interface Serial0/0 ip address 192.168.1.1 255.255.255.0 serial restart-delay 0 !
interface Serial0/1
ip address 192.168.3.1 255.255.255.0
serial restart-delay 0 ! interface Ethernet1/0 ip address 200.1.1.254 255.255.255.0 half-duplex ! router eigrp 100 network 192.168.1.0 network 192.168.3.0 network 200.1.1.0
no auto-summary R2、R3略，参照R1进行接口IP和路由协议的配置 重点看下R4的配置 R4: interface Serial0/0 ip address 192.168.3.2 255.255.255.0 serial restart-delay 0 !
interface Serial0/1
ip address 192.168.4.1 255.255.255.0
ip summary-address eigrp 100 0.0.0.0 0.0.0.0 250（向R3通过默认路由，管理距离高于EIGRP默认值）! router eigrp 100 network 192.168.3.0 network 192.168.4.0
auto-summary 查看结果： 1.R2和R3之间链路正常时 a) R3的路由表： R3#sh 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, 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 192.168.4.1 to network 0.0.0.0 D 200.1.1.0/24 [90/2707456] via 192.168.2.1, 00:00:02, Serial0/0
C 200.1.2.0/24 is directly connected, Ethernet1/0 C 192.168.4.0/24 is directly connected, Serial0/1
D 192.168.1.0/24 [90/2681856] via 192.168.2.1, 00:00:02, Serial0/0 C 192.168.2.0/24 is directly connected, Serial0/0
D 192.168.3.0/24 [90/3193856] via 192.168.2.1, 00:00:02, Serial0/0 D* 0.0.0.0/0 [90/2681856] via 192.168.4.1, 00:00:00, Serial0/1 b)R3的拓扑表： R3#sh ip eigrp topology
IP-EIGRP Topology Table for AS(100)/ID(200.1.2.254) Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status A 0.0.0.0/0, 1 successors, FD is Inaccessible
1 replies, active 00:00:00, query-origin: Successor Origin Remaining replies:
via 192.168.2.1, r, Serial0/0
P 192.168.1.0/24, 1 successors, FD is 2681856
via 192.168.2.1 (2681856/2169856), Serial0/0 P 192.168.2.0/24, 1 successors, FD is 2169856 via Connected, Serial0/0
P 192.168.3.0/24, 1 successors, FD is 3193856
via 192.168.2.1 (3193856/2681856), Serial0/0 P 192.168.4.0/24, 1 successors, FD is 2169856 via Connected, Serial0/1
P 200.1.1.0/24, 1 successors, FD is 2707456
via 192.168.2.1 (2707456/2195456), Serial0/0 P 200.1.2.0/24, 1 successors, FD is 281600
via Connected, Ethernet1/0 2.R2的S0/1设置为DOWN,观察R3路由表和拓扑表 a)R3路由表： R3#sh 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, 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 192.168.4.1 to network 0.0.0.0 C 200.1.2.0/24 is directly connected, Ethernet1/0
C 192.168.4.0/24 is directly connected, Serial0/1 C 192.168.2.0/24 is directly connected, Serial0/0
D* 0.0.0.0/0 [90/2681856] via 192.168.4.1, 00:00:05, Serial0/1 b)R3的拓扑表： R3#sh ip eigrp topology
IP-EIGRP Topology Table for AS(100)/ID(200.1.2.254) Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status P 0.0.0.0/0, 1 successors, FD is 2681856
via 192.168.4.1 (2681856/2169856), Serial0/1 P 192.168.4.0/24, 1 successors, FD is 2169856 via Connected, Serial0/1
P 200.1.2.0/24, 1 successors, FD is 281600
via Connected, Ethernet1/0 该实验说明，当R2和R3链路正常是，通过R3去往PC1的数据包不通过R4，只有当R2、R3间链路出现故障，默认路由才启用。 [/img]..
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思科网络模块和接口卡（语音&广域网）的名..
2009-06-19 08:17:34
网络模块 NM-1E 1口以太网模块 NM-1FE-FX 1口快速以太网模块 FX光纤接口 NM-1FE-TX 1口快速以太网模块 TX 双绞线接口 NM-1FE2W 1口10/100以太网2广域网卡插槽 NM-1E2W 1口以..
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使用Virtual-Template在帧中继中实现ppp验..
2009-04-27 18:31:55
一、目的：在通过帧中继网络通信的两台路由器之间实现验证功能（封装类型为帧中继的串行接口不能进行PPP验证，使用Virtual-Template来实现）。 二、实验拓扑图：
三、具体配置： 1、路由器R1:
username R1 password 0 00830725 ! !
interface Serial0/0 no ip address
encapsulation frame-relay IETF serial restart-delay 0
frame-relay interface-dlci 102 ppp Virtual-Template10 （将虚拟模板与本地dlci值关联）
no frame-relay inverse-arp ! !
interface Virtual-Template10 bandwidth 1544
ip address 192.168.1.1 255.255.255.0
ppp authentication pap ! 2、路由器R2: !
interface Serial0/0 no ip address
encapsulation frame-relay IETF serial restart-delay 0
frame-relay interface-dlci 201 ppp Virtual-Template10 （将虚拟模板与本地dlci值关联）
no frame-relay inverse-arp ! !
interface Virtual-Template10 bandwidth 1544
ip address 192.168.1.2 255.255.255.0
ppp pap sent-username R1 password 0 00830725 !
四、验证
1. sh ip int bri (查看接口状态)
virtual-template接口的状态永远为down/down，主要看virtual-template生成的virtual-access的值为UP/UP则接口启用。 2.ping
3.sh frame-relay pvc
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实验：PPP多链路（ppp multilink）
2009-04-27 16:22:43
PPP Multilink配置实验： 一、主要命令介绍
1.将串行接口封装为PPP格式，并将该接口与虚接口multilink 10组关联 R1(config)#int s0/0