Converged Network Adapters, NPARs and VLAN tagging

Richard Chan rspchan at
Tue Apr 17 06:57:52 CDT 2012

Sorry if this is slightly off-topic here but I have a question on
NPARs/CNAs/Blade IO modules.

If you divide up the CNA into 4 NPARs can you VLAN tag at both the
firmware level (pre-OS) and/or OS level? Do the blade IO modules allow
double tagging on the internal ports?

Generally what is the best practice: to VLAN tag at the CNA firmware
or at the OS level?


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