3750的问题还是linux的问题？DUP包

发布于 2022-09-09 04:42:36 字数 6902 浏览 12 评论 1

本帖最后由 philein 于 2011-03-10 13:34 编辑

我有2个机房A/B，各2台3750，3750之间通过4对尾纤连接，在A机房的2台linux机器，绑定了双网卡，每个网卡各连接一个3750，然后又对这2台linux机器做了veritas起了一个浮动IP：
[root@ gxd]# ifconfig -a
bond0    Link encap:Ethernet  HWaddr 00:1A:64:C8:CD:68
      inet addr:10.21.255.129  Bcast:10.21.255.255  Mask:255.255.255.128
      inet6 addr: fe80::200:ff:fe00:0/64 Scope:Link
      UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1
      RX packets:5945419079 errors:0 dropped:0 overruns:0 frame:0
      TX packets:5942762010 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:5358838510506 (4.8 TiB)  TX bytes:3746134369787 (3.4 TiB)

bond0:0 Link encap:Ethernet  HWaddr 00:1A:64:C8:CD:68
      inet addr:10.21.255.131  Bcast:10.21.255.255  Mask:255.255.255.0
      UP BROADCAST RUNNING MASTER MULTICAST  MTU:1500  Metric:1

eth0    Link encap:Ethernet  HWaddr 00:1A:64:C8:CD:68
      inet6 addr: fe80::21a:64ff:fec8:cd68/64 Scope:Link
      UP BROADCAST RUNNING SLAVE MULTICAST  MTU:1500  Metric:1
      RX packets:5900775173 errors:0 dropped:0 overruns:0 frame:0
      TX packets:5942762005 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:5355097376680 (4.8 TiB)  TX bytes:3746134369389 (3.4 TiB)
      Interrupt:169 Memory:ce000000-ce011100

eth1    Link encap:Ethernet  HWaddr 00:1A:64:C8:CD:68
      inet6 addr: fe80::21a:64ff:fec8:cd68/64 Scope:Link
      UP BROADCAST RUNNING NOARP SLAVE MULTICAST  MTU:1500  Metric:1
      RX packets:44643906 errors:0 dropped:0 overruns:0 frame:0
      TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:3741133826 (3.4 GiB)  TX bytes:398 (398.0 b)
      Interrupt:209 Memory:ca000000-ca011100

eth2    Link encap:Ethernet  HWaddr 00:15:17:AE:63:64
      inet6 addr: fe80::215:17ff:feae:6364/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:138749002 errors:0 dropped:0 overruns:0 frame:0
      TX packets:131986389 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:14018487734 (13.0 GiB)  TX bytes:11182179836 (10.4 GiB)
      Base address:0x6000 Memory:c7ee0000-c7f00000

eth3    Link encap:Ethernet  HWaddr 00:15:17:AE:63:65
      inet6 addr: fe80::215:17ff:feae:6365/64 Scope:Link
      UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
      RX packets:138750339 errors:0 dropped:0 overruns:0 frame:0
      TX packets:131987524 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000
      RX bytes:14018564077 (13.0 GiB)  TX bytes:11181819112 (10.4 GiB)
      Base address:0x6020 Memory:c7ea0000-c7ec0000

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:16436  Metric:1
      RX packets:1260929063 errors:0 dropped:0 overruns:0 frame:0
      TX packets:1260929063 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:189360028250 (176.3 GiB)  TX bytes:189360028250 (176.3 GiB)

sit0    Link encap:IPv6-in-IPv4
      NOARP  MTU:1480  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:0
      RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)

现在的问题是我从这2台linux的机器上任何一台去ping另一个机房的机器都会出现DUP！包，也就是说每个ping包都回收到了2个reply，我通过这个机房的其他AIX绑定etherchannel双网卡的机器去ping就是正常的的，证明我的网络是不存在多条路由的，后来发现我所有的绑定了双网卡和做了浮动IP的linux机器都会出现一个包出去会收到2个reply的问题，请教这是为什么，有什么好的解决办法？
   还有一个奇怪的问题是我在这2台机器上ping同一个交换机上的其他服务器就没有DUP!包，奇怪的很，但是ping另一个机房就会有。。。但是我在这个交换机下的其他AIX的机器上ping另一个机房的服务器又没有DUP！包，所以现在我很迷惑到底是我网络的问题还是linux 的问题。
网络拓扑如下：