From: Sadiq Yakasai (sadiqtanko@gmail.com)
Date: Mon Mar 03 2008 - 19:06:14 ARST
Scott,
Thanks for the defination there. So in essence, once a packet is ready
to be transmitted, it is placed in the SW output queue, from where it
is put onto the TXRing and then eventually on to the wire by the media
controller.
Now, my question again :). When is the interface congested here? Is it
when a packet is ready to be placed into the SW queue and it has to
wait for (at least) one other packet (that is in front of this packet
in question) to be placed in the SW queue? Or is it when the packet
awaits another packet to be placed from the TXRing to the media? Which
of these is this the absolute definition of interface congestion
again?
Because it is only when this happens that the LLQ process is invoked
in the router, right?
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