第一步就要子网划分,可以直接借4位 但是这样做法还是欠缺一点,不便于后期管理,IP地址浪费。
可以对每一个网段给他分一个 ,然后每个路由器的环回 再给他用分配的IP进行划分.
骨干链路每个都需要俩个IP;网络位延长到31位的话,这样网段里面没有可用IP;所有 最多延长到30位,这样排除俩个不可用IP,还剩俩个其可用IP,没有造成浪费。
192.168.1.00000000/24
192.168.1.000 00000 /27 ----- 骨干链路
192.168.1.000 000 00 /30 ---- 192.168.1.0/30
192.168.1.000 001 00 /30 ----- 192.168.1.4/30
192.168.1.000 010 00 /30 ----- 192.168.1.8/30
192.168.1.000 011 00 /30 ----- 192.168.1.12/30
192.168.1.000 100 00 /30 ---- 192.168.1.16/30
192.168.1.000 101 00 /30 ----- 192.168.1.20/30
192.168.1.000 110 00 /30
192.168.1.000 111 00 /30
192.168.1.001 00000 /27 ---- R1 192.168.1.32/27
192.168.1.001 0 0000 /28 --- 192.168.1.32/28
192.168.1.001 1 0000 /28 --- 192.168.1.48/28
192.168.1.010 00000 /27 ---- R2 192.168.1.64/27
192.168.1.010 0 0000 /28 ---- 192.168.1.64/28
192.168.1.010 1 0000 /28 ---- 192.168.1.80/28
192.168.1.011 00000 /27 ---- R3 192.168.1.96/27
192.168.1.011 0 0000 /28 ---- 192.168.1.96/28
192.168.1.011 1 0000 /28 ---- 192.168.1.112/28
192.168.1.100 00000 /27 ---- R4 192.168.1.128/27
192.168.1.100 0 0000 /28 ---- 192.168.1.128/28
192.168.1.100 1 0000 /28 ---- 192.168.1.144/28
192.168.1.101 00000 /27
192.168.1.110 00000 /27
192.168.1.111 00000 /27
1.IP配置信息
R1:
[r1]int g 0/0/0
[r1-GigabitEthernet0/0/0]ip add 192.168.1.1 30
[r1-GigabitEthernet0/0/0]int g0/0/1
[r1-GigabitEthernet0/0/1]ip add 192.168.1.5 30
[r1-GigabitEthernet0/0/1]int l 0
[r1-LoopBack0]ip add 192.168.1.33 28
[r1-LoopBack0]int l 1
[r1-LoopBack1]ip add 192.168.1.49 28
R2:
[r2]int g0/0/0
[r2-GigabitEthernet0/0/0]ip add 192.168.1.2 30
[r2-GigabitEthernet0/0/0]int g0/0/1
[r2-GigabitEthernet0/0/1]ip add 192.168.1.9 30
[r2-GigabitEthernet0/0/1]int l 0
[r2-LoopBack0]ip add 192.168.1.65 28
[r2-LoopBack0]int l 1
[r2-LoopBack1]ip add 192.168.1.81 28
R3:
[r3]int g0/0/0
[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
[r3-GigabitEthernet0/0/1]int l 0
[r3-LoopBack0]ip add 192.168.1.97 28
[r3-LoopBack0]int l 1
[r3-LoopBack1]ip add 192.168.1.113 28
R4:
[r4]int g0/0/0
[r4-GigabitEthernet0/0/0]ip add 192.168.1.14 30
[r4-GigabitEthernet0/0/0]int g 0/0/1
[r4-GigabitEthernet0/0/1]ip add 192.168.1.10 30
[r4-GigabitEthernet0/0/1]int l 0
[r4-LoopBack0]ip add 192.168.1.129 28
[r4-LoopBack0]int l 1
[r4-LoopBack1]ip add 192.168.1.145 28
[r4]int g 0/0/2
[r4-GigabitEthernet0/0/2]ip add 192.168.1.17 30
[r4-GigabitEthernet0/0/2]int g4/0/0
[r4-GigabitEthernet4/0/0]ip add 192.168.1.21 30
R5:
[r5]interface LoopBack 0
[r5-LoopBack0]ip add 5.5.5.5 24
[r5-LoopBack0]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
[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 192.168.1.128 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 30 192.168.1.2
[r1]ip route-static 192.168.1.16 30 192.168.1.6
[r1]ip route-static 192.168.1.12 30 192.168.1.6
[r1]ip route-static 192.168.1.96 27 192.168.1.6
[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 192.168.1.128 27 192.168.1.10
[r2]ip route-static 192.168.1.16 30 192.168.1.10
[r2]ip route-static 192.168.1.12 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
[r2]ip route-static 192.168.1.4 30 192.168.1.1
[r2]ip route-static 192.168.1.32 27 192.168.1.1
[r2]ip route-static 0.0.0.0 0 192.168.1.10
[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 192.168.1.64 27 192.168.1.5
[r3]ip route-static 192.168.1.64 27 192.168.1.14
[r3]ip route-static 192.168.1.8 30 192.168.1.14
[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 0.0.0.0 0 192.168.1.14
[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
[r4]ip route-static 192.168.1.0 30 192.168.1.9
[r4]ip route-static 192.168.1.64 27 192.168.1.9
[r4]ip route 0.0.0.0 0 192.168.1.18
[r4]ip route-static 0.0.0.0 0 192.168.1.18
R5:
[r5]ip route-static 192.168.1.32 27 192.168.1.17
[r5]ip route-static 192.168.1.0 30 192.168.1.17
[r5]ip route-static 192.168.1.64 27 192.168.1.17
[r5]ip route-static 192.168.1.8 30 192.168.1.17
[r5]ip route-static 192.168.1.4 30 192.168.1.17
[r5]ip route-static 192.168.1.12 30 192.168.1.17
[r5]ip route-static 192.168.1.128 27 192.168.1.17
[r5]ip route-static 192.168.1.96 27 192.168.1.17
[r1]ip route-static 192.168.1.32 27 nu 0
[r1]ip route-static 192.168.1.20 30 192.168.1.6
[r1]ip route-static 192.168.1.20 30 192.168.1.2
R2:
[r2]ip route-static 192.168.1.64 27 nu 0
[r2]ip route-static 192.168.1.20 30 192.168.1.10
R3:
[r3]ip route-static 192.168.1.96 27 nu 0
[r3]ip route-static 192.168.1.20 30 192.168.1.14
R4:
[r4]ip route-static 192.168.1.128 27 NULL 0
[r4]ip route-static 0.0.0.0 0 192.168.1.22 preference 61
R5:
浮动静态路由:
ip route-static 192.168.1.0 255.255.255.252 192.168.1.21 pre 61
ip route-static 192.168.1.4 255.255.255.252 192.168.1.21 pre 61
ip route-static 192.168.1.8 255.255.255.252 192.168.1.21 pre 61
ip route-static 192.168.1.12 255.255.255.252 192.168.1.21 pre 61
ip route-static 192.168.1.32 255.255.255.224 192.168.1.21 pre 61
ip route-static 192.168.1.64 255.255.255.224 192.168.1.21 pre 61
ip route-static 192.168.1.96 255.255.255.224 192.168.1.21 pre 61
ip route-static 192.168.1.128 255.255.255.224 192.168.1.21 pre 61
此时测试可以全网可达!!!
关闭0/0/2接口,测试100M的连通性:
测试走上1000M发现ping不通 ,但是可以ping5.5.5.5 和1.20 网段;所以100M连通性良好。