ip link show # 顯示網(wǎng)絡(luò)接口信息
ip link set eth0 up # 開啟網(wǎng)卡
ip link set eth0 down # 關(guān)閉網(wǎng)卡
ip link set eth0 promisc on # 開啟網(wǎng)卡的混合模式
ip link set eth0 promisc offi # 關(guān)閉網(wǎng)卡的混個模式
ip link set eth0 txqueuelen 1200 # 設(shè)置網(wǎng)卡隊列長度
ip link set eth0 mtu 1400 # 設(shè)置網(wǎng)卡最大傳輸單元
ip addr show # 顯示網(wǎng)卡IP信息
ip addr add 192.168.0.1/24 dev eth0 # 設(shè)置eth0網(wǎng)卡IP地址192.168.0.1
ip addr del 192.168.0.1/24 dev eth0 # 刪除eth0網(wǎng)卡IP地址
ip route show # 顯示系統(tǒng)路由
ip route add default via 192.168.1.254 # 設(shè)置系統(tǒng)默認(rèn)路由
ip route list # 查看路由信息
ip route add 192.168.4.0/24 via 192.168.0.254 dev eth0 # 設(shè)置192.168.4.0網(wǎng)段的網(wǎng)關(guān)為192.168.0.254,數(shù)據(jù)走eth0接口
ip route add default via 192.168.0.254 dev eth0 # 設(shè)置默認(rèn)網(wǎng)關(guān)為192.168.0.254
ip route del 192.168.4.0/24 # 刪除192.168.4.0網(wǎng)段的網(wǎng)關(guān)
ip route del default # 刪除默認(rèn)路由
ip route delete 192.168.1.0/24 dev eth0 # 刪除路由
用 ip 命令顯示網(wǎng)絡(luò)設(shè)備的運(yùn)行狀態(tài):
[root@localhost ~]# ip link list
1: lo: <LOOPBACK,UP,LOWER_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,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:16:3e:00:1e:51 brd ff:ff:ff:ff:ff:ff
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast qlen 1000
link/ether 00:16:3e:00:1e:52 brd ff:ff:ff:ff:ff:ff
[root@localhost ~]# ip route list
112.124.12.0/22 dev eth1 proto kernel scope link src 112.124.15.130
10.160.0.0/20 dev eth0 proto kernel scope link src 10.160.7.81
192.168.0.0/16 via 10.160.15.247 dev eth0
172.16.0.0/12 via 10.160.15.247 dev eth0
10.0.0.0/8 via 10.160.15.247 dev eth0
default via 112.124.15.247 dev eth1
顯示鄰居表:
[root@localhost ~]# ip neigh list
112.124.15.247 dev eth1 lladdr 00:00:0c:9f:f3:88 REACHABLE
10.160.15.247 dev eth0 lladdr 00:00:0c:9f:f2:c0 STALE