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O'Reilly Platform
book
可编程网络自动化
by
Jason Edelman
,
Scott S. Lowe
,
Matt Oswalt
January 2023
Intermediate to advanced
458 pages
14h 16m
Chinese
Posts & Telecom Press
Content preview from
可编程网络自动化
58
|
第
3
章
用于删除路由的命令的一般形式为
ip route del
destination-net
via
gateway-address
。
最后,
ip route
命令还可以修改默认网关。(也可以通过编辑接口配置文件来修改默认网
关并使改动持久化,因为
ip route
命令的改动并不能持久。)修改默认网关的命令如下所
示(假设默认网关已存在)。
vagrant@trusty:~$
ip route del default via 192.168.70.2 dev eth0
vagrant@trusty:~$
ip route add default via 192.168.70.1 dev eth0
命令中的
default
关键字指代目的地
0.0.0.0/0
。
Linux
还支持
策略路由
,可以借助多个路由表以及规则,指示
Linux
选用某个特定的路
由表。例如,你可能想为系统中各个网络接口使用不同的默认网关。通过策略路由,可
以配置
Linux
为
eth0
使用一个路由表
(对应某个网关),为
eth1
使用另一个路由表(对
应其他网关)。策略路由属于略显高级的话题,在这里不做介绍,如果对其工作原理感兴
趣,那么可以参阅
ip rule
命令和
ip route
命令手册页或帮助页面(执行
man ip rule
和
man ip route
)。
到目前为止,本节的焦点一直围绕着主机视角下的
IP
路
由,但
Linux
其实也可以作为功能
完善的
IP
路由器。和策略路由一样,这也是一个比较高级的话题,不过,下一节会介绍一
些基础知识。
3.5.3 ...
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Publisher Resources
ISBN: 9787115606181