RT7#show ip interface brief
Interface IP-Address OK? Method Status Protocol FastEthernet1/0 202.202.202.202 YES manual up up FastEthernet2/0 192.168.2.10 YES manual up up
4、静态汇总路由 192.168.20.1/24
192.168.21.1/24
192.168.36.0/24
192.168.37.0/24
192.168.1.0/30
192.168.1.4/30
192.168.44.0/24
192.168.44.0/24
配置命令：
RT1(config)#ip route 192.168.32.0 255.255.248.0 192.168.1.2
//配置192.168.32.0/24的下一跳地址是192.168.1.2 RT1(config)#ip route 192.168.32.0 255.255.248.0 192.168.1.6
//配置192.168.32.0/29的下一跳地址是192.168.1.6，与上一条是同一目的地址，下一跳地址是在同一路由器上，形成等值负载均衡，当下一跳地址不是在同一路由器上时，也是形成等值负载均衡。
RT1(config)#ip route 192.168.44.0 255.255.255.0 192.168.1.10
RT1(config)#ip route 0.0.0.0 0.0.0.0 192.168.2.10
//配置缺省路由，与边界网络对接
RT3(config)#ip route 192.168.20.0 255.255.254.0 192.168.1.1 RT3(config)#ip route 192.168.20.0 255.255.254.0 192.168.1.5 RT3(config)#ip route 192.168.44.0 255.255.255.0 192.168.1.1 RT3(config)#ip route 192.168.44.0 255.255.255.0 192.168.1.5
RT3(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.1 RT3(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.5
//配置分部到总部的缺省路由，用于经总部访问外网，两条缺省路由形成等值负载均衡
RT5(config)#ip route 192.168.32.0 255.255.248.0 192.168.1.9 RT5(config)#ip route 192.168.20.0 255.255.254.0 192.168.1.9 RT5(config)#ip route 192.168.1.0 255.255.255.248 192.168.1.9
RT5(config)#ip route 0.0.0.0 0.0.0.0 192.168.1.9 //配置分部到总部的缺省路由，用于经总部访问外网
192.168.1.0/29
192.168.1.8/30
192.168.32.0/29
192.168.0.0/16
192.168.20.0/21
RT7(config)#ip route 192.168.0.0 255.255.0.0 192.168.2.9
//配置边界路由器与内网对接
5、查看路由表 RT1#show ip route
Codes: C - connected, S - static, 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 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 192.168.2.10 to network 0.0.0.0
S 192.168.44.0/24 [1/0] via 192.168.1.10
//192.168.44.0/24的下一跳地址是192.168.1.10 [1/0] 1表示管理距离，0表示度量值
C 192.168.21.0/24 is directly connected, Ethernet3/1 C 192.168.20.0/24 is directly connected, Ethernet3/0
192.168.1.0/30 is subnetted, 3 subnets C 192.168.1.8 is directly connected, Serial0/2 C 192.168.1.0 is directly connected, Serial0/0 C 192.168.1.4 is directly connected, Serial0/1
192.168.2.0/29 is subnetted, 1 subnets
C 192.168.2.8 is directly connected, FastEthernet2/0
S* 0.0.0.0/0 [1/0] via 192.168.2.10 S 192.168.32.0/21 [1/0] via 192.168.1.6 [1/0] via 192.168.1.2
RT3#show ip route
Codes: C - connected, S - static, 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 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 192.168.1.5 to network 0.0.0.0
S 192.168.44.0/24 [1/0] via 192.168.1.5
[1/0] via 192.168.1.1 C 192.168.36.0/24 is directly connected, Ethernet3/0 C 192.168.37.0/24 is directly connected, Ethernet3/1
192.168.1.0/30 is subnetted, 2 subnets C 192.168.1.0 is directly connected, Serial0/0 C 192.168.1.4 is directly connected, Serial0/1
S* 0.0.0.0/0 [1/0] via 192.168.1.5 [1/0] via 192.168.1.1 S 192.168.20.0/23 [1/0] via 192.168.1.5 [1/0] via 192.168.1.1
RT5#show ip route
Codes: C - connected, S - static, 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 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 192.168.1.9 to network 0.0.0.0
C 192.168.44.0/24 is directly connected, Ethernet3/0 192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks C 192.168.1.8/30 is directly connected, Serial0/0
S 192.168.1.0/29 [1/0] via 192.168.1.9
S* 0.0.0.0/0 [1/0] via 192.168.1.9 S 192.168.20.0/23 [1/0] via 192.168.1.9 S 192.168.32.0/21 [1/0] via 192.168.1.9
RT7#show ip route
Codes: C - connected, S - static, 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 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 not set
202.202.202.0/29 is subnetted, 1 subnets
C 202.202.202.200 is directly connected, FastEthernet1/0
192.168.2.0/29 is subnetted, 1 subnets
C 192.168.2.8 is directly connected, FastEthernet2/0
S 192.168.0.0/16 [1/0] via 192.168.2.9
6、全网连通性测试
NAME IP/CIDR GATEWAY
PC1 192.168.20.10/24 192.168.20.1 PC2 192.168.21.10/24 192.168.21.1 PC3 192.168.36.10/24 192.168.36.1 PC4 192.168.37.10/24 192.168.37.1 PC5 192.168.44.10/24 192.168.44.1
VPCS 1 >ping 192.168.36.10 192.168.36.10 icmp_seq=1 time=55.000 ms 192.168.36.10 icmp_seq=2 time=62.000 ms 192.168.36.10 icmp_seq=3 time=97.000 ms 192.168.36.10 icmp_seq=4 time=133.000 ms 192.168.36.10 icmp_seq=5 time=55.000 ms
VPCS 1 >ping 192.168.37.10 192.168.37.10 icmp_seq=1 timeout 192.168.37.10 icmp_seq=2 time=86.000 ms 192.168.37.10 icmp_seq=3 time=62.000 ms 192.168.37.10 icmp_seq=4 time=70.000 ms 192.168.37.10 icmp_seq=5 time=63.000 ms
VPCS 1 >ping 192.168.44.10 192.168.44.10 icmp_seq=1 time=106.000 ms 192.168.44.10 icmp_seq=2 time=43.000 ms 192.168.44.10 icmp_seq=3 time=46.000 ms 192.168.44.10 icmp_seq=4 time=55.000 ms 192.168.44.10 icmp_seq=5 time=62.000 ms
VPCS 5 >ping 192.168.21.10 192.168.21.10 icmp_seq=1 timeout 192.168.21.10 icmp_seq=2 time=70.000 ms 192.168.21.10 icmp_seq=3 time=51.000 ms 192.168.21.10 icmp_seq=4 time=82.000 ms 192.168.21.10 icmp_seq=5 time=55.000 ms
VPCS 5 >ping 192.168.37.10 192.168.37.10 icmp_seq=1 time=113.000 ms 192.168.37.10 icmp_seq=2 time=78.000 ms 192.168.37.10 icmp_seq=3 time=125.000 ms 192.168.37.10 icmp_seq=4 time=78.000 ms 192.168.37.10 icmp_seq=5 time=66.000 ms
VPCS 5 >ping 192.168.37.20 192.168.37.20 icmp_seq=1 time=98.000 ms 192.168.37.20 icmp_seq=2 time=74.000 ms 192.168.37.20 icmp_seq=3 time=58.000 ms 192.168.37.20 icmp_seq=4 time=110.000 ms 192.168.37.20 icmp_seq=5 time=74.000 ms
五、实验结果
路由汇总减少了路由条目，同时保持了网络中到目的地址的所有路由。因此，路由汇总可以提高
路由选择的效率，节省路由器的内存，也减少了网络管理员的配置工作。
浮动静态路由是一种特殊的静态路由，通过配置一个比主路由的管理距离更大的静态路由，保证网络中主路由失效的情况下，提供备份路由。但在主路由存在的情况下它不会出现在路由表中。