Packet loss with "Flexible" VMnic type

Ran into a packet loss issue today.  Normally I usually only use E1000's in production.  We had some Server 2003 VM's running with Flexible NICs.  Caused intermittent packet loss, once we changed them to VMXNet2 adapters, the connections were perfect.

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1001805

VMware View Domain Filtering...

I found a KB article discussing domain filtering using the VDMadmin command for View.  I hope this works!

**Update, this worked, FTW!!!!

http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1014103

Another one, this one is for View 5.0:
http://pubs.vmware.com/view-50/index.jsp?topic=/com.vmware.view.administration.doc/GUID-3E9924EC-1554-43E5-A812-84F9711909A5.html

CCNA Subnet Calculator with wildcard masks

Useful for testing yourself on wildcard masks.  Make up your own IP range and figure out what the wildcard mask should be, then verify your work.

http://www.subnetonline.com/pages/subnet-calculators/ipv4-wildcard-calculator.php

Running VMware View Client over ICA...

This is a bad idea.  I read about it awhile back and wanted to try it.  The idea of hosting the View Client on a XenApp server is very practical on networks that have an existing XenApp infrastucture.  However, the performance hit that I observed was significant when compared to simply using the View Client over the WAN.  This is probably because the graphics traffic is getting re-rendered two times; once by the View Client (PCoIP) and once by the Citirx Client (ICA).  The resulting slow down was workable, but not something I would want end-users to experience.

vCPU Sizing Whitepaper

This article is nice because it details the performance impacts of having 2 vCPU's assigned to one VM.  If a VM has to vCPU's, it has to wait for 2 pCPU's to be available before processing a request. 

http://www.vkernel.com/files/docs/white-papers/vcpu-sizing-considerations.pdf

Internet Explorer CRL Checking screws up VMware View Client

Ouch, I just experienced this problem on I.E 7.  I never got the same error message (or any useful message) in my View 4.6 Client logs.  Disabling Server CRL checking in I.E. 7 allowed the connections through.  This is strange because everything seemingly worked fine for a long time, then one day the View Client just wouldn't connect any more.  I also tested this on a system NOT joined to the domain, and it behaved the same way (fails when CRL checking is turned on).  FWIW, I am using a custom server certificate, with no ability to check an external CRL. 

http://www.codewiz51.com/blog/post/2009/02/05/Vista-and-WinInet-error-ERROR_INTERNET_SEC_CERT_REV_FAILED-(12057).aspx

Running Process Explorer in Session 0

This excellent blog post by Mark Russinovich covers running Process Explorer in Session 0 to survive log offs.

http://blogs.technet.com/b/markrussinovich/archive/2010/01/13/3305263.aspx