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电梯直达

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发表于 2015-06-14 14:31 |只看该作者 |倒序浏览

系统是CentOS 6.5 mini安装

二话不说，直接上配置：

1. 内网两块网卡配置：
[root@mini-firewall ~]# ifconfig
eth0    Link encap:Ethernet  HWaddr 00:0C:29:A8:54:1E
      inet addr:192.168.3.81  Bcast:192.168.3.255  Mask:255.255.255.0
      inet6 addr: fe80::20c:29ff:fea8:541e/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:1486 errors:0 dropped:0 overruns:0 frame:0
      TX packets:1081 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:152095 (148.5 KiB)  TX bytes:189244 (184.8 KiB)

eth1    Link encap:Ethernet  HWaddr 00:0C:29:A8:54:28
      inet addr:10.0.0.254  Bcast:10.0.0.255  Mask:255.255.255.0
      inet6 addr: fe80::20c:29ff:fea8:5428/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:7 errors:0 dropped:0 overruns:0 frame:0
      TX packets:23 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:737 (737.0 b)  TX bytes:1454 (1.4 KiB)

ifcfg-eth0:
DEVICE=eth0
HWADDR=00:0C:29:A8:54:1E
TYPE=Ethernet
UUID=7599ae21-e7e5-44cf-96a8-a27f3dec7654
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=static
IPADDR=192.168.3.81
NETMASK=255.255.255.0
GATEWAY=192.168.3.1
DNS1=192.168.3.1
DNS2=202.96.209.5

ifcfg-eth1:
DEVICE=eth1
HWADDR=00:0C:29:A8:54:28
TYPE=Ethernet
UUID=f7258b1a-04e0-4d55-83ee-5d406d5698f4
ONBOOT=yes
NM_CONTROLLED=no
BOOTPROTO=static
IPADDR=10.0.0.254
NETMASK=255.255.255.0

2. ipv4转发已经开启：
# Controls IP packet forwarding
net.ipv4.ip_forward = 1

3. 测试两块网卡相互ping的情况：

可以ping通：
ping 10.0.0.254 -I 192.168.3.81

不能ping通：
ping 10.0.0.254 -I eth0

eth0和192.168.3.81不是同一个网卡么？怎么会有差别？  小弟运维基础不扎实，求教老鸟，多谢！