giovedì 17 giugno 2010

Strange network issue on FCoE environment

Hi all,
on this month I and my collegues migrate all the virtual infrastructure from EMC CX Clariion SAN to EMC Symmetrix VMAX SAN. On the ESX there was 2 CNA adapter:
- QLogic 8042
- Emulex LP21002
All the 2 interface for the network emulates an 82598EB 10Gigabit AF Dual port. The CNA are connected to Cisco Nexus 5020 switch. For the migration we create a new vSwitch whit all the portgroup and the emulex network for the physical adapter. The issue is the vm not connected to the network after a vmotion. With VMware and many stress test we found that the vm after a vmotion did't make an arp request for register the MAC to the new esx host, so the vm is connected to the virtual switch and another vm on the same esx and portgroup can ping it, but all the physical world can't ping it.

After many task we make a dirty solution: remove the QLOGIC CNA and make all the connection with the EMULEX card. This is the solution for our case! take attention for your environment! make many test and speack with vmware and log, log, log!

bye

aLex

venerdì 11 giugno 2010

ESX 4 Update 2

Hi all,

jost a little remind: VmWare released an upgrade of the vSphere infrastructure. Here the Release Notes.

aLex