用2个网关配置2个网卡
用2个网关配置2个网卡
提问于 2016-04-22 16:33:17
假设我的路由器有LAN (192.168.0.1/24)和DMZ (192.168.1.1/24)。我的电脑有两个NIC，一个用于LAN，一个用于DMZ。
我如何配置我的路由，使它使用两个网关而不是默认网关？
ifconfig的输出：
eth0 Link encap:Ethernet HWaddr 00:15:17:6f:94:44
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:458357 errors:0 dropped:0 overruns:0 frame:0
TX packets:250537 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:646967588 (616.9 MiB) TX bytes:33742301 (32.1 MiB)
Interrupt:16 Memory:fc3e0000-fc400000
eth1 Link encap:Ethernet HWaddr 00:1e:4f:13:31:b7
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5 errors:0 dropped:0 overruns:0 frame:0
TX packets:37 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:320 (320.0 B) TX bytes:2992 (2.9 KiB)
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:18979 errors:0 dropped:0 overruns:0 frame:0
TX packets:18979 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1
RX bytes:10059282 (9.5 MiB) TX bytes:10059282 (9.5 MiB)
tap103i0 Link encap:Ethernet HWaddr 3e:fb:b1:e0:40:da
inet6 addr: fe80::3cfb:b1ff:fee0:40da/64 Scope:Link
UP BROADCAST RUNNING PROMISC MULTICAST MTU:1500 Metric:1
RX packets:520 errors:0 dropped:0 overruns:0 frame:0
TX packets:766 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:500
RX bytes:44796 (43.7 KiB) TX bytes:702165 (685.7 KiB)
vmbr0 Link encap:Ethernet HWaddr 00:15:17:6f:94:44
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::215:17ff:fe6f:9444/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:437651 errors:0 dropped:0 overruns:0 frame:0
TX packets:245697 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:637230824 (607.7 MiB) TX bytes:31203868 (29.7 MiB)
vmbr1 Link encap:Ethernet HWaddr 00:1e:4f:13:31:b7
inet addr:192.168.1.2 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21e:4fff:fe13:31b7/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5 errors:0 dropped:0 overruns:0 frame:0
TX packets:34 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:230 (230.0 B) TX bytes:2412 (2.3 KiB)netstat -rn的输出：
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 192.168.0.1 0.0.0.0 UG 0 0 0 vmbr0
192.168.0.0 192.168.0.1 255.255.255.0 UG 0 0 0 vmbr0
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 vmbr0
192.168.1.0 192.168.1.1 255.255.255.0 UG 0 0 0 vmbr1
192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 vmbr1/etc/network/interfaces：
auto lo
iface lo inet loopback
iface eth0 inet manual
iface eth1 inet manual
auto vmbr0
iface vmbr0 inet static
address 192.168.0.2
netmask 255.255.255.0
gateway 192.168.0.1
bridge_ports eth0
bridge_stp off
bridge_fd 0
post-up route add -net 192.168.0.0 netmask 255.255.255.0 gw 192.168.0.1
auto vmbr1
iface vmbr1 inet static
address 192.168.1.2
netmask 255.255.255.0
gateway 192.168.0.2
bridge_ports eth1
bridge_stp off
bridge_fd 0
post-up route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.1.1回答 2
Unix & Linux用户
发布于 2016-04-22 16:49:25
如果您需要它使用不同的默认路由来使用本地IP地址，这就是iproute2发挥作用的地方。
https://www.thomas-krenn.com/en/wiki/Two_默认设置_出入口_在……上面_一_系统
Unix & Linux用户
发布于 2016-04-22 16:44:45
您可以修改/etc/network/interfaces文件并将这一行添加到每个网络接口节/块中，以定义静态路由
# this is for vmbr0 block below
post-up route add -net 192.168.0.0 netmask 255.255.255.0 gw 192.168.0.1
# this is for vmbr1 block below
post-up route add -net 192.168.1.0 netmask 255.255.255.0 gw 192.168.1.1您需要通过service networking restart重新启动网络子系统/服务。
或
您可以动态更改路由，但在重新启动时会丢失它们。这是好的测试目的或短期使用。
route add -net 192.168.0.0/24 gw 192.168.0.1 dev vmbr0
route add -net 192.168.1.0/24 gw 192.168.1.1 dev vmbr1这并不要求您重新启动网络，尽管它可能会在必要时和必要时因网络切换而造成短暂的中断或会话损失。
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原文链接：
https://unix.stackexchange.com/questions/278379
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