If the question says the traffic should be prioritized then yours is the closer answer. CBWFQ does not provide any prioritization, it only provides bandwidth guarantee in times of congestion.
If the question states that they both should be given 25% then your answer should be: class-map SSH-MQC match protocol ssh class-map HTTP-MQC match protocol http policy-map MQC class-map SSH-MQC priority percent 25 class-map HTTP-MQC priority percent 25 It all depends on whether the question says they each should be given 25% or together they should be given 25%. You can configure multiple classes for priority queuing but you will never have more than one priority queue. Regards, Tyson Scott - CCIE #13513 R&S, Security, and SP Managing Partner / Sr. Instructor - IPexpert, Inc. Mailto: <mailto:[email protected]> [email protected] Telephone: +1.810.326.1444, ext. 208 Live Assistance, Please visit: <http://www.ipexpert.com/chat> www.ipexpert.com/chat eFax: +1.810.454.0130 IPexpert is a premier provider of Self-Study Workbooks, Video on Demand, Audio Tools, Online Hardware Rental and Classroom Training for the Cisco CCIE (R&S, Voice, Security & Service Provider) certification(s) with training locations throughout the United States, Europe, South Asia and Australia. Be sure to visit our online communities at <http://www.ipexpert.com/communities> www.ipexpert.com/communities and our public website at <http://www.ipexpert.com/> www.ipexpert.com From: [email protected] [mailto:[email protected]] On Behalf Of Kingsley Charles Sent: Wednesday, December 22, 2010 6:10 AM To: yusef sheriff Cc: [email protected] Subject: Re: [OSL | CCIE_Security] Advance security - MQC Configure "bandwidth" to configure bandwidth for other traffic. With regards Kings On Wed, Dec 22, 2010 at 4:38 PM, Kingsley Charles <[email protected]> wrote: You need to know about QoS before going into the solution. Any traffic exiting the router gets into the interface's queue which is a hardware queue. QoS is done using software queue when there is congestion likely to happen in the hardware queue. The following are the QoS mechanisms: Congestion Management Congestion Avoidance Link Efficiency Traffic shaping and policing Classifying traffic and allocating bandwidth is part Congestion Management. CBWFQ is the method we use for allocating BW. There are three software queues: * Priority Queue * Normal Queue * Default (FIFO) Priority queues are meant for delay sensitivity traffic like voice traffic. Usually DSCP value of EF or IP precedence value of 5 at layer 3 and CoS value of 5 at layer 2 is used for Priority queue classification. The Priority queue is given precedence over the normal queue and then the default queue. With regards Kings On Wed, Dec 22, 2010 at 2:39 PM, yusef sheriff <[email protected]> wrote: Dear Kamran, Thanks for your quick responce. But the below question asked to do prioritized and 25% of bandwidth. On R2, http and ssh traffic should both be prioritized and given 25% of interface bandwidth on s0/0/0. and which solution is correct? should we use priority or bandwidth for above question? Regards, Yusef Sherief On Wed, Dec 22, 2010 at 12:50 PM, Kamran Shakil <[email protected]> wrote: Dear Yousef, Priority is mostly used with delay sensitive traffic like video and voice , while bandwidth is used for data type of traffic for eg:- ssh , telnet , http etc..... sometypes you can use priority also if you have some transaction based traffic like SQL queries going live !!!! I think you might get similar answers from others ! good day . kamran. -----Original Message----- From: [email protected] on behalf of yusef sheriff Sent: Wed 12/22/2010 12:47 PM To: [email protected] Subject: [OSL | CCIE_Security] Advance security - MQC Dear All, I was doing advance security tab. i found the below question: On R2, http and ssh traffic should both be prioritized and given 25% of interface bandwidth on s0/0/0. my solution is:- R2(config)#class-map match-any PRIORITY R2(config-cmap)#match protocol ssh R2(config-cmap)#match protocol http R2(config)#policy-map OUTGOING R2(config-pmap)#class PRIORITY R2(config-pmap-c)#priority percent 25 WB Solutions R2(config)#class-map match-any PRIORITY R2(config-cmap)#match protocol ssh R2(config-cmap)#match protocol http R2(config)#policy-map OUTGOING R2(config-pmap)#class PRIORITY R2(config-pmap-c)#bandwidth percent 25 R2(config-pmap)#int s0/0/0 R2(config-if)#service-policy out OUTGOING can any one clarify on difference between bandwidth and priority? also like to know which solution is correct. Regards, Yusef _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
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