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 > > >
_______________________________________________ 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
