how to disable 802.1p

  • Thread starter Thread starter Grant H.
  • Start date Start date
G

Grant H.

Hi,

I just ran the through the complete HCT 11.2 on my NDIS IM driver. All
went well except for a failure in the NDIS 2c_priority test.
Basically, HCT realizes that the interface (Intel 1000 MT) supports
802.1p, so it does some prioirty tests. Now, I know that even when i
run HCT on the interface itself (as opposed to the IM driver), the
same priority test fails. My question is, how do I disable 802.1p so
that HCT will realize that the interface doesn't support it & doesn't
flag a failure. I tried "Configure" on the interface & disabling QOS
Packet tagging & even uninstalled QOS from the test interface.

Any ideas? Also, If there really is no workaround, do you think it's
OK to submit to msft with that failure & just note something in the
ReadMe.doc?

thanks in advance!

-grant
 
Are you using a switch to connect the test/support adapters or a dumb hub?
Many switches that support 802.1p priority tagging strip the priority tag as
the packet passes through. This stripping must be disabled. In the
2c_Priority test the NDISTest instructs devices that support 802.1p priority
tagging to insert the priority tag. These packets are sent as directed
packets to the support adapter. The support adapter has priority tagging
enabled and it is expected to extract the tag from the packet header and
pass up the priority information in appropriate Per Packet field. If the
switch strips the tag it will deny the receiving NIC the ability to extract
the priority information from the packet and the test fails. You can look at
the switch documentation to figure out how to disable this capability or use
a hub instead.

Thanks
Mitesh
 
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