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Nested ESXi 5.1 Duplicate ICMP Response

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Hello,

 

My infrastructure of nested ESXi 5.1 is as below and everything is working fine.(vMotion, HA/DRS, iSCSI/NFS connect to physical storage and so on)

But there's a strange problem between x1 pESXi and x2 vESXi about ICMP response, please give me some suggestions to solve it, thanks !!!

 

x1 pESXi (Management IP=172.16.10.10)

     Standard vSwitch2

     Uplinks x4 which are teaming together with IP-hash to Cisco switch (etherchannel and trunk)

     Portgroups x5 (MGMT, STOR, vMOT, FT, PROD) with it's own vlan id.

 

x2 vESXi (Management IP=172.16.10.111 & 172.16.10.222)

There're x5 Standard vSwitch which are configured as follows.

     Name: vSwitch0

     Uplinks x2 which are teaming together with IP-hash to pESXi vSwitch.

     Portgroups: MGMT

 

When pESXi ping vESXI vmkernel IP address with each other, the duplicate ICMP response will be occurred.

~ # ping 172.16.10.111

PING 172.16.10.111 (172.16.10.111): 56 data bytes

64 bytes from 172.16.10.111: icmp_seq=0 ttl=64 time=0.960 ms

64 bytes from 172.16.10.111: icmp_seq=1 ttl=64 time=0.525 ms (DUP!)

64 bytes from 172.16.10.111: icmp_seq=1 ttl=64 time=0.609 ms

64 bytes from 172.16.10.111: icmp_seq=2 ttl=64 time=0.531 ms (DUP!)



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