Guest to guest Ping down (second Ping)

Environment: ESXi Cluster DMZ closes

2 R720 PowerEdge servers

5.5 vCenter

ESXi 5.5 ENT more

6 - 1 GB NETWORK interface card

-2 NIC - ESXi management

-NIC 4 - VDS trunks

VDS trunks connect to 3750 x with uplinks to the ASA5525x

2 k 8 R2 invited on both hosts.

All the guests drop periodically second ping to another client on cluster. (two guests).

Sometimes more than one ping fall occurs.

Any help to solve this issue is greatly appreciated.

Topology

VM on DMZ > tandem switch > Firewall

What we found:

The firewall strives to respond to ARP requests for the demilitarized zone.

Applied controls:

We have added search non-proxy-arp and route orders to the NAT configuration of the firewall part.

The second ping drops stopped.

Tags: VMware

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