linux下配置路由网关和转发接口
linux配置路由:1、 [root@localhost ~]# route add -net 192.168.10.0 netmask 255.255.255.0 gw 192.168.10.1SIOCADDRT: No such process //网关指定错误,下一跳必须可达2、 [root@localhost ~]# route add -net 192.168.10....
linux配置路由:
1、 [root@localhost ~]# route add -net 192.168.10.0 netmask 255.255.255.0 gw 192.168.10.1
SIOCADDRT: No such process //网关指定错误,下一跳必须可达
2、 [root@localhost ~]# route add -net 192.168.10.0 netmask 255.255.255.0 gw 10.43.85.1
[root@localhost ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
2.2.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
192.168.10.0 10.43.85.1 255.255.255.0 UG 0 0 0 eth5
3、指定转发接口配置//没有办法穿过局域网
[root@localhost ~]# route add -net 192.168.10.0 netmask 255.255.255.0
SIOCADDRT: No such device
[root@localhost ~]# route add -net 192.168.10.0 netmask 255.255.255.0 dev eth5
[root@localhost ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
2.2.2.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
192.168.10.0 0.0.0.0 255.255.255.0 U 0 0 0 eth5
....
[root@localhost ~]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
2.2.2.0 * 255.255.255.0 U 0 0 0 eth2
192.168.10.0 * 255.255.255.0 U 0 0 0 eth5
缺省网关没有办法穿过局域网:
[root@localhost ~]# route add -net 10.43.42.199 netmask 255.255.255.255 dev eth5
[root@localhost ~]# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.43.42.199 * 255.255.255.255 UH 0 0 0 eth5
2.2.2.0 * 255.255.255.0 U 0 0 0 eth2
10.0.0.0 10.43.85.1 255.0.0.0 UG 0 0 0 eth5 //有效网关
..........
[root@localhost ~]# ping 10.43.42.199
PING 10.43.42.199 (10.43.42.199) 56(84) bytes of data.
From 10.43.85.162 icmp_seq=1 Destination Host Unreachable
From 10.43.85.162 icmp_seq=2 Destination Host Unreachable
........
--- 10.43.42.199 ping statistics ---
15 packets transmitted, 0 received, +12 errors, 100% packet loss, time 14529ms
pipe 3
[root@localhost ~]# route del -net 10.43.42.199 netmask 255.255.255.255
[root@localhost ~]# ping 10.43.42.199
PING 10.43.42.199 (10.43.42.199) 56(84) bytes of data.
64 bytes from 10.43.42.199: icmp_seq=1 ttl=59 time=0.397 ms
......
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