Linux 常用網(wǎng)絡(luò)配置命令

?顯示網(wǎng)路配置

? ifconfig??

??? ifconfig –a? 查看所有接口

??? ifconfig device 查看指定網(wǎng)絡(luò)接口信息

配置網(wǎng)絡(luò)地址 網(wǎng)關(guān) 廣播地址 子網(wǎng)掩碼

?????? ifconfig eth0 192.168.1.50 netmask 255.255.255.0 broadcast 192.168.1.50

?????? route add default gw 192.168.1.20 添加網(wǎng)關(guān)

?????? route delet default 刪除默認(rèn)網(wǎng)關(guān)

?????? ip route? (route) 顯示路由

?以上設(shè)置在系統(tǒng)重新啟動(dòng)時(shí)就會(huì)失去，必須要寫入到配置文件/etc/sysconfig/network-srcipts/ifcfg-eth0中去：

?系統(tǒng)的主機(jī)名稱在配置文件/etc/sysconfig/network中

修改這些配置文件后重啟網(wǎng)絡(luò)服務(wù)就會(huì)生效（/etc/init.d/network restart）

?相關(guān) route命令的用法：

??? route add -net 192.56.76.0 netmask 255.255.255.0 dev eth0

? ????????????adds a route to the network 192.56.76.x via "eth0". The Class C

????????????? netmask? modifier is not really necessary here because 192.* is

????????????? a Class C IP address. The word "dev" can be omitted here.

???? ?Flags? Possible flags include

???????? ? ? ? U (route is up)

????????????? H (target is a host)

????????????? G (use gateway)

????????????? R (reinstate route for dynamic routing)

????????????? D (dynamically installed by daemon or redirect)

????????????? M (modified from routing daemon or redirect)

????????????? A (installed by addrconf)

????????????? C (cache entry)

????????????? !? (reject route)??

? 還有一個(gè)強(qiáng)大網(wǎng)絡(luò)配置工具（ip），它是iproute2軟件包里面的一個(gè)工具，能替代傳統(tǒng)的網(wǎng)絡(luò)配置工具（ifconfig route），而且能夠?qū)崿F(xiàn)更多的功能：

????? ip link（ip link show） 顯示系統(tǒng)網(wǎng)絡(luò)設(shè)備

[root@mail net]# ip link

1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue

??? link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000

??? link/ether 00:0c:29:2f:1c:e1 brd ff:ff:ff:ff:ff:ff

3: sit0: <NOARP> mtu 1480 qdisc noop

link/sit 0.0.0.0 brd 0.0.0.0

ip addr ?顯示網(wǎng)絡(luò)地址

[root@mail net]# ip addr

1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue

??? link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

??? inet 127.0.0.1/8 brd 127.255.255.255 scope host lo

??? inet6 ::1/128 scope host

?????? valid_lft forever preferred_lft forever

2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000

??? link/ether 00:0c:29:2f:1c:e1 brd ff:ff:ff:ff:ff:ff

??? inet 192.168.1.50/24 brd 192.168.1.255 scope global eth0

??? inet6 fe80::20c:29ff:fe2f:1ce1/64 scope link tentative

?????? valid_lft forever preferred_lft forever

3: sit0: <NOARP> mtu 1480 qdisc noop

link/sit 0.0.0.0 brd 0.0.0.0

ip addr { add | del } IFADDR dev STRING 為某一設(shè)備添加或刪除ip

設(shè)置鏈路屬性 ip link set DEVICE { up | down | arp { on | off } |

?????????????? promisc { on | off } |

?????????????? allmulti { on | off } |

?????????????? dynamic { on | off } |

?????????????? multicast { on | off } |

?????????????? txqueuelen PACKETS |

?????????????? name NEWNAME |

?????????????? address LLADDR | broadcast LLADDR |

?????????????? mtu MTU }

ip route show / ip route list

ip route list table (main /local / default)

ip route { add | del | change | append | replace | monitor } ROUTE

ip route add default via 192.168.1.20 添加網(wǎng)關(guān)

ip route delete default 刪除網(wǎng)關(guān)

轉(zhuǎn)載于:https://blog.51cto.com/2369004/413765

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