i have a question regarding egress queuing on cat6500 modules. e.g. WS-X 6704 has 1p7q4t is egress-modell. my goal is to limit the priority queue to 15% of the available bandwidth.
i can put weights on the wrr-queues and limit their ressources: "wrr-queue bandwidth 50 20 15 0 0 0 0." but this isn´t possible for the priority-queue. only available command is "priority-queue queue-limit 15" but this only restricts the buffer to 15%.
at the end of the day i want to prevent that the wrr-queues don´t have remaining bandwidth when the priority-queue is saturated.
is there an easy way to restrict the bandwidth of the priority queue or do i have to implement additionally some kind of policing?
but what happens in thois case if i have 10Gig traffic which is marked with EF. in this case everything is transported in the priority queue and all other queues don´t have any bandwidth. is my assumption correct or do i understand something wrong?
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I believe the "typical" LAN 6500 line card will allow a PQ queue to utilize 100% bandwidth.
For traffic that uses "EF", it ought to be known and subject to admission control. If this is done, you shouldn't unexpectedly have EF traffic consume all your 10gig bandwidth.
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