八 靜態路由綜合實驗
（1）劃分網段
?# 192.168.1.0 24#分析：每個路由器存在兩個環回接口，可以把兩個環回接口分配一個環回地址，所以是四個環回，一個骨干，這樣分配，不會出現路由黑洞#192.168.1.00000000 24192.168.1.000 00000 27 ---192.168.1.0 27192.168.1.001 00000 27---192.168.1.32 27192.168.1.010 00000 27---192.168.1.64 27192.168.1.011 00000 27---192.168.1.96 27192.168.1.100 00000 27---192.168.1.128 27192.168.1.101 00000 27192.168.1.110 00000 27192.168.1.111 00000 27?#給每臺路由器的兩個環回地址分配環回地址的網絡號192.168.1.32 27---192.168.1.32 28和192.168.1.48 28192.168.1.64 27---192.168.1.64 28和192.168.1.80 28192.168.1.96 27---192.168.1.96 28和192.168.1.112 28192.168.1.128 27---192.168.1.128 28和192.168.1.144 28?#給一個骨干分配網段192.168.1.0 27 因為骨干需要六個網段用192.168.1.000 00000 27192.168.1.000 000 00 30---192.168.1.0 30192.168.1.000 001 00 30---192.168.1.4 30192.168.1.000 010 00 30---192.168.1.8 30192.168.1.000 011 00 30---192.168.1.12 30192.168.1.000 100 00 30---192.168.1.16 30192.168.1.000 101 00 30---192.168.1.20 30192.168.1.000 110 00 30---192.168.1.24 30192.168.1.000 111 00 30---192.168.1.28 30
（2）配置每臺路由器的環回地址
?[r1]int lo 0[r1-LoopBack0]ip add 192.168.1.33 28[r1-LoopBack0]int lo 1[r1-LoopBack1]ip add 192.168.1.49 28?[r2]int lo 0[r2-LoopBack0]ip add 192.168.1.65 28[r2-LoopBack0]int lo 1[r2-LoopBack1]ip add 192.168.1.81 28?[r3]int lo 0[r3-LoopBack0]ip add 192.168.1.97 28[r3-LoopBack0]int lo 1[r3-LoopBack1]ip add 192.168.1.113 28?[r4]int lo 0[r4-LoopBack0]ip add 192.168.1.129 28[r4-LoopBack0]int lo 1[r4-LoopBack1]ip add 192.168.1.145 28?[r5]int lo 0[r5-LoopBack0]ip add 5.5.5.5 24
(3)配骨干的IP地址
?[r1]int g 0/0/0[r1-GigabitEthernet0/0/0]ip add 192.168.1.1 30[r1-GigabitEthernet0/0/0]int g 0/0/1[r1-GigabitEthernet0/0/1]ip add 192.168.1.5 30?[r2]int g 0/0/0[r2-GigabitEthernet0/0/0]ip add 192.168.1.2 30[r2-GigabitEthernet0/0/0]int g 0/0/1[r2-GigabitEthernet0/0/1]ip add 192.168.1.9 30?[r3]int g 0/0/0[r3-GigabitEthernet0/0/0]ip add 192.168.1.6 30[r3-GigabitEthernet0/0/0]int g 0/0/1[r3-GigabitEthernet0/0/1]ip add 192.168.1.13 30?[r4]int g 0/0/0[r4-GigabitEthernet0/0/0]ip add 192.168.1.10 30[r4-GigabitEthernet0/0/0]int g 0/0/1[r4-GigabitEthernet0/0/1]ip add 192.168.1.14 30[r4-GigabitEthernet0/0/1]int g 0/0/2[r4-GigabitEthernet0/0/2]ip add 192.168.1.17 30[r4]int e 4/0/0[r4-Ethernet4/0/0]ip add 192.168.1.21 30?[r5]int g 0/0/0[r5-GigabitEthernet0/0/0]ip add 192.168.1.18 30[r5-GigabitEthernet0/0/0]int g 0/0/1[r5-GigabitEthernet0/0/1]ip add 192.168.1.22 30
(4)寫靜態路由保證全網可達
?[r1]ip route-static 192.168.1.64 27 192.168.1.2[r1]ip route-static 192.168.1.8 30 192.168.1.2[r1]ip route-static 192.168.1.96 27 192.168.1.6[r1]ip route-static 192.168.1.12 30 192.168.1.6[r1]ip route-static 192.168.1.128 27 192.168.1.2[r1]ip route-static 192.168.1.128 27 192.168.1.6[r1]ip route-static 192.168.1.16 30 192.168.1.6[r1]ip route-static 192.168.1.16 30 192.168.1.2?[r2]ip route-static 192.168.1.32 27 192.168.1.1[r2]ip route-static 192.168.1.4 30 192.168.1.1[r2]ip route-static 192.168.1.128 27 192.168.1.10[r2]ip route-static 192.168.1.12 30 192.168.1.10[r2]ip route-static 192.168.1.16 30 192.168.1.10[r2]ip route-static 192.168.1.96 27 192.168.1.10[r2]ip route-static 192.168.1.96 27 192.168.1.1?[r3]ip route-static 192.168.1.32 27 192.168.1.5 [r3]ip route-static 192.168.1.0 30 192.168.1.5[r3]ip route-static 192.168.1.128 27 192.168.1.14[r3]ip route-static 192.168.1.16 30 192.168.1.14[r3]ip route-static 192.168.1.8 30 192.168.1.14[r3]ip route-static 192.168.1.64 27 192.168.1.14[r3]ip route-static 192.168.1.64 27 192.168.1.5?[r4]ip route-static 192.168.1.64 27 192.168.1.9[r4]ip route-static 192.168.1.0 30 192.168.1.9[r4]ip route-static 192.168.1.96 27 192.168.1.13[r4]ip route-static 192.168.1.4 30 192.168.1.13[r4]ip route-static 192.168.1.32 27 192.168.1.13[r4]ip route-static 192.168.1.32 27 192.168.1.9?[r5]ip route-static 192.168.1.32 27 192.168.1.17[r5]ip route-static 192.168.1.64 27 192.168.1.17[r5]ip route-static 192.168.1.96 27 192.168.1.17[r5]ip route-static 192.168.1.128 27 192.168.1.17[r5]ip route-static 192.168.1.0 30 192.168.1.17[r5]ip route-static 192.168.1.4 30 192.168.1.17[r5]ip route-static 192.168.1.8 30 192.168.1.17[r5]ip route-static 192.168.1.12 30 192.168.1.17
（5）寫缺省路由
?[r1]ip route-static 0.0.0.0 0 192.168.1.2[r1]ip route-static 0.0.0.0 0 192.168.1.6?[r2]ip route-static 0.0.0.0 0 192.168.1.10[r3]ip route-static 0.0.0.0 0 192.168.1.14[r4]ip route-static 0.0.0.0 0 192.168.1.18
利用靜態路由的優先級，達到備份鏈路的效果。（浮動靜態路由）
?[r5]display this ?[r5]ip route-static 192.168.1.0 255.255.255.252 192.168.1.21 pr 61[r5]ip route-static 192.168.1.4 255.255.255.252 192.168.1.21 pr 61[r5]ip route-static 192.168.1.8 255.255.255.252 192.168.1.21 pr 61[r5]ip route-static 192.168.1.12 255.255.255.252 192.168.1.21 pr 61[r5]ip route-static 192.168.1.32 255.255.255.224 192.168.1.21 pr 61[r5]ip route-static 192.168.1.64 255.255.255.224 192.168.1.21 pr 61[r5]ip route-static 192.168.1.96 255.255.255.224 192.168.1.21 pr 61[r5]ip route-static 192.168.1.128 255.255.255.224 192.168.1.21 pr 61
(6)避免環路的出現
????????本實驗由于前面IP劃的好，不存在路由黑洞，假設存在被動環路，也就是R1的環回地址192.168.1.49接口斷了，5.5.5.5去ping 192.168.1.49，然后通過缺省再經R1可達5.5.5.5，造成環路的出現。(R2,R3,R4同樣成立)
所以，在黑洞路由器上，寫一條指向匯總網段，出接口是空接口的路由信息。
?[r1]ip route-static 192.168.1.32 27 NULL 0[r2]ip route-static 192.168.1.64 27 NULL 0[r3]ip route-static 192.168.1.96 27 NULL 0[r4]ip route-static 192.168.1.128 27 NULL 0
，源碼可白嫖!)
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