On Wednesday, 04/23/2008 at 12:34 EDT, "Bhemidhi, Ashwin" <[EMAIL PROTECTED]>
wrote:

> VLAN 106 is Ethernet frame with no IP (LLC over Ethernet)
> VLAN 730 is IP.

(LLC isn't a protocol, it's semantic to fill in the contents of the frame,
including the LLC header.  For IP, the LLC header simply says "this is an
IP frame".)

> Our problem is when the tagging is done by the Linux guest. There is
> some wrong with the VLAN 106 frames going out to a Cisco router. The
> router for some reason is rejecting those frames.

You need to put a sniffer on the switch to find out if the packets are
malformed and, if so, what's wrong with them.  Compare them to the frames
built by the VSWITCH.

Alan Altmark
z/VM Development
IBM Endicott

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