network is unreachable为什么会这样？ help

sgx 2003-08-03 08:33:29

由于需要将邮件服务器的ip地址改为：210.83.*.*
(邮件服务器：redhat7.2 + sendmail + openwebmail 原来的ip是172.16.*.*)
用netconf 将IP改过来以后。重新启动计算机。用ifconfig发现ip地址已经改过来了。 ping 127.0.0.1 可一ping 通.ping 网关ping 不通
出现： network is unreachable 提示；
关闭计算机时出现： stopping squid failed

请问这是为什么???

thanks

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yzhlinux 2003-08-06

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to seagao(seagao) ,fierygnu(va_list) 你们刚开始学习路由吧，这里还没由到和路由由关系的时候，首先要由网络接口才可以谈到路由，目前的 network is unreachable 错误提示的就是网卡都没有有效使用的信息。记住了。
你们可以简单的做个测试（如果你们的系统支持的话）2000的系统你可以把网线把了，然后发现网卡的图表多了一个差，这个时候你 ping 除了 127。0。0。1 的网内地址看看，错误就是这个，然后你们自己分析看看和路由由关系吗？：）

seagao 2003-08-06

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新的ip地址和旧的ip地址是在一个网段内吗，他们是不是同一个网关呀，
先试试，新ip到同一个网段内的主机通不通
在分析一下你的路由表了，看看路由策略.

yzhlinux 2003-08-04

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你没有保存

fierygnu 2003-08-04

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netstat -r看看路由。应该是没有路由。你的网关地址是什么？

yoyocd 2003-08-03

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没有保存
建议重新设置 ip，把ifconfig命令写到 rc.local中

sgx 2003-08-03

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我就是root !

yzhlinux 2003-08-03

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你没有保存吧！这个命令要root 权限执行

sgx 2003-08-03

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但是IP地址我用netconf已经设置完了呀
为什么还会出现这样的错误呢??

yzhlinux 2003-08-03

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没有指定ip地址所以出现 network is unreachable 。
因为没有正确的网络配置，所以 squid 在启动的时候一直在 DNS test，但是总是不能成功
所以可能导致 stop 不了。
你重新设置 ip，可以把ifconfig命令写到 rc.local中，可以保证ip不会被改回来。

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