I think: packets that exceed the LLQ are dropped but packets that exceed the bandwidth are still handled at best effort.
But I am not positive on that statement. JT On Mon, Aug 22, 2011 at 3:28 PM, Mark Senteza <[email protected]>wrote: > Thanks Marko & Kings, > > so if there is not specific request to prioritize EIGRP or any other > traffic for that matter, then "priority percent" and "bandwidth percent" do > still guarantee a percent of the interface bandwidth, but with the major > difference being that "priority" will place the packets in LLQ. Would that > be a right conclusion to make ? > > On Sat, Aug 20, 2011 at 11:21 AM, Marko Milivojevic > <[email protected]>wrote: > >> Mark, >> >> Command "priority" configures LLQ (Low Latency Queueing), which >> guarantees bandwidth, but also the latency. Packets in this queue will >> be scheduled for delivery before all other packets in other queues. >> This queue is "conditionally policed" at the rate specified, i.e. if >> there are packets in other queues, this queue cannot exceed the >> specified rate. >> >> Command "bandwidth" configures Class Based Weighted Fair Queueing >> (CBWFQ) or Hierarchical Queueing Framework (HQF - on 12.4(20)T and >> above), which reserves minimum bandwidth for the class, but it does >> not guarantee latency. I.e. CBWFQ/HQF queues are processed after LLQ >> and in a round-robin fashion (a variation of deficit round robin - >> DRR). >> >> For your task, better solution is "bandwidth percent 25", since you >> were not asked anything about the latency. >> >> Also, don't forget that EIGRP has a built-in throttling mechanism and >> it will not use more than 50% of the available interface bandwidth (as >> specified by the "bandwidth" command on the interface). Alternate >> solution for the task is simply this: >> >> ! >> ! X = EIGRP AS >> ! >> interface FastEthernet0/0 >> ip bandwidth-percent eigrp X 25 >> ! >> >> -- >> Marko Milivojevic - CCIE #18427 >> Senior Technical Instructor - IPexpert >> >> FREE CCIE training: http://bit.ly/vLecture >> >> Mailto: [email protected] >> Telephone: +1.810.326.1444 >> Web: http://www.ipexpert.com/ >> >> On Fri, Aug 19, 2011 at 18:16, Mark Senteza <[email protected]> >> wrote: >> > >> > Hey all, >> > >> > I have a question about the correct options to select when asked to >> > "guarantee egress EIGRP traffic 25% of the bandwidth on an interface" >> > >> > Under the policy-map > class configuration I see two options, which seem >> to >> > describe doing the same thing. What is the difference between using >> > "priority percent" and "bandwidth percent" >> > >> > policy-map QOS-POLICY >> > class EIGRP >> > priority percent 15 >> > >> > where keyword "percent" -> % of total bandwidth >> > >> > or >> > >> > policey-map QOS-POLICY >> > class EIGRP >> > bandwidth percent 15 >> > >> > where keywords "bandwidth percent" -> % of total bandwidth >> > >> > Thanks, >> > >> > Mark >> > >> > _______________________________________________ >> > For more information regarding industry leading CCIE Lab training, >> please >> > visit www.ipexpert.com >> > >> > Are you a CCNP or CCIE and looking for a job? Check out >> > www.PlatinumPlacement.com <http://www.platinumplacement.com/> >> > >> > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > > Are you a CCNP or CCIE and looking for a job? Check out > www.PlatinumPlacement.com <http://www.platinumplacement.com/> >
_______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com
