网站开发女生可以做吗,各类郑州网站建设,免费信息发布,二人对战的微信小程序首先看拓扑#xff1a; 一个面试考官问我一个这样的问题#xff0c;拓扑如上#xff0c;为什么R1上的lo0 PING 不通 R6 上的lo0,说是一切都按正常配置#xff0c;说是考我EIGRP的特性。我当然很纳闷#xff0c;如果都正常配置怎么会不通呢#xff0c;最后他告诉我主要是考… 首先看拓扑 一个面试考官问我一个这样的问题拓扑如上为什么R1上的lo0 PING 不通 R6 上的lo0,说是一切都按正常配置说是考我EIGRP的特性。我当然很纳闷如果都正常配置怎么会不通呢最后他告诉我主要是考我EIGRP的域内管理距离是90域外管理距离是170。当时可能不够自信也没多想回来后越想越不对一般来说只有到达目的地有两条路由的时候才会考虑管理距离但这里没有这个情况啊于是自已设计了一个实验加以验证结果是可以通。 R3 与 R5 R4与R5 使用帧中继相连DLCI号分别为305 503 405 504 帧中继只能用点到点子接口。 主要配置如下 R1 interface Loopback0 ip address 1.1.1.1 255.255.255.0 interface Serial1/1 ip address 10.10.12.1 255.255.255.252 router rip version 2 network 1.0.0.0 network 10.0.0.0 no auto-summary R2 interface FastEthernet0/0 ip address 10.10.24.1 255.255.255.252 duplex half ! interface Serial1/0 ip address 10.10.12.2 255.255.255.252 serial restart-delay 0 clock rate 64000 router eigrp 1 redistribute rip metric 10000 100 255 1 1500 network 10.10.23.0 0.0.0.255 network 10.10.24.0 0.0.0.255 no auto-summary ! router rip version 2 redistribute eigrp 1 metric 2 network 10.0.0.0 no auto-summary R3 interface Serial1/0 ip address 10.10.23.2 255.255.255.252 serial restart-delay 0 ! interface Serial1/2 ip address 10.10.35.1 255.255.255.252 encapsulation frame-relay serial restart-delay 0 frame-relay map ip 10.10.35.2 305 broadcast //静态映射DLCI号是帧中继交换分配置的如果不配置就不通。 no frame-relay inverse-arp //静态映射要关闭反向ARP router eigrp 1 network 10.10.23.0 0.0.0.255 network 10.10.35.0 0.0.0.255 no auto-summary ! R4 interface FastEthernet0/0 ip address 10.10.24.2 255.255.255.252 duplex half interface Serial1/2 ip address 10.10.45.1 255.255.255.252 encapsulation frame-relay serial restart-delay 0 frame-relay map ip 10.10.45.2 405 broadcast no frame-relay inverse-arp router eigrp 1 network 10.10.24.0 0.0.0.255 network 10.10.34.0 0.0.0.255 network 10.10.45.0 0.0.0.255 no auto-summary R5 interface Serial1/1 ip address 10.10.56.1 255.255.255.252 serial restart-delay 0 interface Serial1/2.1 point-to-point ip address 10.10.45.2 255.255.255.252 frame-relay interface-dlci 504 ! interface Serial1/2.2 point-to-point ip address 10.10.35.2 255.255.255.252 frame-relay interface-dlci 503 router eigrp 1 redistribute ospf 100 metric 10000 100 255 1 1500 network 10.10.35.0 0.0.0.255 network 10.10.45.0 0.0.0.255 no auto-summary ! router ospf 100 log-adjacency-changes redistribute eigrp 1 subnets //默认为TYPE 2cost 为20 network 10.10.56.0 0.0.0.255 area 0 R6 interface Serial1/0 ip address 10.10.56.2 255.255.255.252 serial restart-delay 0 router ospf 100 log-adjacency-changes network 6.6.6.0 0.0.0.255 area 0 network 10.10.56.0 0.0.0.255 area 0 结果测试R1 PING R6 R1#ping 6.6.6.6 so 1.1.1.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 6.6.6.6, timeout is 2 seconds: Packet sent with a source address of 1.1.1.1 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max 64/92/132 ms R1# R6 PING R1 R6#ping 1.1.1.1 so 6.6.6.6 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 1.1.1.1, timeout is 2 seconds: Packet sent with a source address of 6.6.6.6 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max 84/102/120 ms R6# 转载于:https://blog.51cto.com/xingno/384556
