静态路由

标签：byte   路由表   mini   escape   comm   and   ping   connected   down   

• • candidate default, U - per-user static route, o - ODR
    P - periodic downloaded static route
    Gateway of last resort is 192.168.2.1 to network 0.0.0.0
    172.16.0.0/24 is subnetted, 1 subnets
    C 172.16.3.0 is directly connected, FastEthernet0/0
    C 192.168.2.0/24 is directly connected, Serial0/0
    S* 0.0.0.0/0 [1/0] via 192.168.2.1
    ru3#ping 172.16.1.1
    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to 172.16.1.1, timeout is 2 seconds:
    !!!!!
    Success rate is 100 percent (5/5), round-trip min/avg/max = 62/65/79 ms
    ru3#ping 172.16.2.1
    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to 172.16.2.1, timeout is 2 seconds:
    !!!!!
    Success rate is 100 percent (5/5), round-trip min/avg/max = 31/34/47 ms
    ru3#
    上面的这个是在ru3 上查看到的路由表信息 注意学到的末梢路由的标示
    ru2#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, 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
    172.16.0.0/24 is subnetted, 3 subnets
    S 172.16.1.0 [1/0] via 192.168.1.1
    C 172.16.2.0 is directly connected, FastEthernet0/0
    S 172.16.3.0 [1/0] via 192.168.2.2
    C 192.168.1.0/24 is directly connected, Serial0/0
    C 192.168.2.0/24 is directly connected, Serial0/1
    ru2#
    这是ru2上学到的路由信息 其中C表示的是直连网段 S 表示静态路由 S* 表示的是缺省路由 即我们说的默认路由

    我三台pc机的ip
    依次是172.16.1.2 172.16.2.2 172.16.3.2
    这是在pc3 上的查勘信息
    以及测试与其他计算机的连通情况
    Packet Tracer PC Command Line 1.0
    PC>ipconfig
    IP Address......................: 172.16.3.2
    Subnet Mask.....................: 255.255.0.0
    Default Gateway.................: 172.16.3.1
    PC>ping 172.16.1.2
    Pinging 172.16.1.2 with 32 bytes of data:
    Request timed out.
    Reply from 172.16.1.2: bytes=32 time=125ms TTL=125
    Reply from 172.16.1.2: bytes=32 time=109ms TTL=125
    Reply from 172.16.1.2: bytes=32 time=125ms TTL=125
    Ping statistics for 172.16.1.2:
    Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 109ms, Maximum = 125ms, Average = 119ms
    PC>ping 172.16.2.2
    Pinging 172.16.2.2 with 32 bytes of data:
    Request timed out.
    Reply from 172.16.2.2: bytes=32 time=125ms TTL=126
    Reply from 172.16.2.2: bytes=32 time=78ms TTL=126
    Reply from 172.16.2.2: bytes=32 time=94ms TTL=126
    Ping statistics for 172.16.2.2:
    Packets: Sent = 4, Received = 3, Lost = 1 (25% loss),
    Approximate round trip times in milli-seconds:
    Minimum = 78ms, Maximum = 125ms, Average = 99ms
    PC>
    静态路由协议的特点
    对路由器cpu没有管理性开销
    在路由器急案没有带宽占用
    增加了安全性，
    缺点就是必须对网络有足够的了解，对于大型的网络配置繁琐，对于一个稍微大点的网络来说配置的工作量复杂，且容易出错

静态路由

标签：byte   路由表   mini   escape   comm   and   ping   connected   down   

原文地址：https://blog.51cto.com/14315399/2388922