Packet loss with IP HASH- HELP!!!
Posted on 2011-10-21
We have 5 ESXi Server jonined a HA cluster. We want to use IP Hash based laod balancing. We have HP BL 680G7 Blade servers with HP GBE2C switch. We have 6 NIC and 2 vLAN needs to be communicated through same. Our 2xGBE2C switch are connected to Nexus 2x2248 switch which then connected to Nexus 2x5010 connected to 2xCISCO 6506 Core switch. The VLAN are defined on Juniper firewall which is conencted to Cisco core switch. there are 6 NIC connected to vSwitch0 and VM Network port group the policy is set to IP HASH. In this scenario we are having packet loss even with ping. We changed the load balancing at switch level and still the packet loss is coming. If we try to switch OFFany GBE2C switch in our blade chassis, all seems to work without any issue, e.g. no packet loss but when we switch ON both switch the packet loss issue is coming.
One more thing, if we set the load balancing to "Based on VLAN ID" then all seems to work well. We want to use IP HASH only as there only we achive true load balancing. Also We have got the configuration checked with VMware L2 and so many other experts and they all say all the config is as per requirement. We are using ESXi v4.1. Can someone help to isolate as we are stuck in this for last 1 month without a solution.
Thanks a ton in advance..