15/10/2014 patches ESXi break Citrix Netscaler VPX Appliance

The part warning, part question...

My ESXi hosts were v5.5.0 206190 (directly from the 5.5U2 cd - RollupISO2), I applied the following hotfixes:

ID: ESXi550-201410101-SG Impact: Important release date: 2014-10-15 products: embeddedEsx 5.5.0 update esx-base

ID: ESXi550-201410401-BG Impact: critical release date: 2014-10-15 products: embeddedEsx 5.5.0 update esx-base

ID: ESXi550-201410402-BG Impact: Important release date: 2014-10-15 products: embeddedEsx 5.5.0 update drivers-misc

ID: ESXi550-201410403-BG Impact: Important release date: 2014-10-15 products: embeddedEsx 5.5.0 update sata ahci

ID: ESXi550-201410404-BG Impact: Important release date: 2014-10-15 products: embeddedEsx 5.5.0 update xhci-xhci

ID: ESXi550-201410405-BG Impact: Important release date: 2014-10-15 products: embeddedEsx 5.5.0 update tools-light

ID: ESXi550-201410406-BG Impact: Important release date: 2014-10-15 products: embeddedEsx 5.5.0 update net-vmxnet3

subsequently they were 2143827 v5.5.0

Once updated my Citrix Netscaler VPX devices 2 (vmware hardware 8, Citrix Netscaler OS v10.5.52.11nc (latest), FreeBSD 64 bit, E1000 Nic) has stopped responding on the network. They work very well when it is on the old version 5.5U2 but starts to drop packets intermittently and then finally deposited the network during the migration to a host that has the patches listed above. I have 2 mode high availability, this happens even if only one is enabled and the other offshore. It goes back to normal when back to host pre patched vmotioned.

I have tried switching networks, remove and add network, upgrade to 10 hardware cards, removing all together and deploy the latest version of the citrix website, if it fall not all together, he will drop a lot of packages. You can watch the netscaler console display events NŒUD FAIL, NŒUD down and NŒUD up to several times per minute.

DIFFICULTY (or work around)?

Hi all

When you work with VMWare Technical support they foud a solution that works for me almost an hour now.

Maybe you guys can 'test' this solution too?

Enter the shell in the NetScaler mode, then:

(1) find location loader.conf on NetScaler VM #find /-name loader.conf

For the VM NetScaler downloaded, there are 2 loader.conf:./flash/boot/defaults/loader.conf and. / flash/boot/loader.conf, we only need to change one.

(2) add "hw.em.txd = 512" in loader.conf, this will change the Tx ring size to 512 (Note: do not set the size of the ring to 256, it will cause the NetScaler VM core dump)

(3) restart the NetScaler VM

4) migrate to a host with the latest patches

Good luck...

Edit: still works fine, also with userload in production environment

Tags: VMware

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