I am confused about the solution guide for Vol 1 Lab 21 (QOS) Task 2. The task asks you to "configure traffic shaping for all traffic other than the H.323 voice traffic destined for 200.0.0.4."
I read this to mean, do not shape H.323 traffic destined to 200.0.0.4. Do shape all other traffic. This would include all H.323 traffic not destined to 200.0.0.4, and all traffic destined to 200.0.0.4 except H.323. I question if the given solutions meet this criteria. access-list 101 deny udp any host 200.0.0.4 range 16384 32767 access-list 101 permit ip any host 200.0.0.4 int f0/1 traffic-shape group 101 7000000 875000 0 Seems to me the access-list needs another line to truly match the question. Shouldn't it have: access-list 101 permit ip any any at the end? The next bit of the solution is: class-map match-all ALLBUTVOICE match not protocol rtp match not protocol rtcp policy-map NoVoiceShaping class AllButVoice shape average 7000000 875000 0 int f0/0 service-policy output NoVoiceShaping Doesn't this also suffer from being too broad? Aren't we causing all voice traffic to not be shaped rather than just voice traffic to 200.0.0.4? If I am correct then how can we modify the class map above? Can we do match not access-group and give an access-list? I tried to do this but was not successful although I am getting confused if the access-list should permit or deny traffic to 200.0.0.4 since it is the being Match NOT against it. The 2-3 levels of negatives causes my brain to melt. Also are the terms H.323 voice traffic interchangeable with RTP and RTCP? The question asks about H.323 and the solutions match on RTP and RTCP but there is also a match protocol H323 so why aren't we using this? If you can shed some light on any of the above, I would be very greatful. Thank you, Marc _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com
