思科路由器配置静态路由,路由表有显示,但PC机ping不通

2025-01-20 12:34:38
推荐回答(4个)
回答1:

  路由关系是需要双向解析的,和NAT单向不同的。在几个网段互联时就需要配置静态路由来指定某一个网段通过哪个地址去访问。简单的举个例子,
公司一台电脑接的局域网A,配置了网关192.168.0.1(公司外网路由器),通过网关去访问Internet网。然后公司还有一个网段B,这个网段有自己的外网路由器192.168.1.1。B网段的电脑通过这个路由访问Internet。那么A网段和B网段的电脑该怎么互访呢,在A,B网段之间添加一个路由器,一边连接A网段,地址为192.168.0.2,一边连接B网段,地址为192.168.1.2。现在能互访了,当然不能,电脑还没有指向B网段的静态路由,需要添加一条静态路由让电脑需要访问B网段时知道该往哪个地址发送数据包。用Route add命令添加。格式如下
route add 192.168.1.0 mask 255.255.255.0 192.168.0.2 -p
解释一下,192.168.1.0,指定需要访问的网段,mask后面的是子网掩码。最后192.168.0.2表示通过哪个地址访问。结尾-P参数表示这条静态路由永久生效,没有这个参数的话你电脑重启后将丢失这条路由策略。
当然,只是举一个例子,实际工作中很少有这么干的,实际碰到这种情况,通常是将A,B两个网段的路由做连接,然后在两个路由器里添加静态路由,来达到AB网互访的目的。这样就不需要在每台客户端来添加静态路由策略了。路由怎么配,需要看路由器品牌而定

回答2:

这个很简单!我刚刚大概看了一下你的配置,首先我要提醒你的是,你要问问题一定要把图上面的每个接口的IP地址和接口对应好,不然看的人都懵了!你上图中RA路由上面配置的IP地址,192.168.1.254 在fa0/0 接口下面配置的,但是你给的拓扑图没有这个接口,我暂且理解为它是RA连接PC A的e0 接口把。那么这样一来,你的PC A接口的IP地址为:192.168.1.1
路由RA的e0接口的IP地址为:172.168.1.254
RA的s0接口的ip地址为:192.168.2.1
RB的s1/1接口的ip地址为:192.168.2.2
RB的e0接口的Ip地址为:192.168.3.254

好了 接下来我们确定你要干什么!你现在要做的是想要用静态路由让PC A 和PC B互通。
(1)如果你的PC A 和PC B用的是路由器模拟的。那么一定要关闭路由功能:no ip routing 并且配置默认网关(ip default-gateway 192.168.1.254/ 192.168.3.254)指向PC各自路由的直连接口. 如果你用的是真机测试或者cisco Packet
Tracer 这样的模拟器上面自带的电脑模拟软件直接配置IP地址就行。
(2)写静态路由 写静态路由写默认路由也好,静态路由也行。两者都可以。
第一种默认路由的写法:RA上面:ip route 0.0.0.0 0.0.0.0 192.168.2.2 (或者s0接口)
RB上面:ip route 0.0.0.0 0.0.0.0 192.168.2.1 (或者s1接口)
第二种静态路由的写法:RA上面:ip route 192.168.3.0 255.255.255.0 192.168.2.2
RB上面:ip route 192.168.1.0 255.255.255.0 192.168.2.1
上面两种都可以。

看你上面的配置,你是两个都做了,如果仅仅从pc都开始ping不通直连的路由,那么就是你pc上面没有指定网关了。你把网关指定为直连路由的接口Ip地址就没有问题了如果你地址没有配错。

回答3:

show running-config
检查地址,掩码,单独show ip route static,静态路由表是不是没有,全局有静态路由表。

回答4:

动态IP连接之后自动更换IP
静态IP即是固定IP
下载九州动态IP软件,支持模拟器多开
九州软件是用于在不同网络环境下快速切换IP地址等网络配置的软件工具

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