02-12-2009 07:14 AM - last edited on 03-25-2019 03:22 PM by ciscomoderator
Greetings im after some clarrification in how shaping on "class-default" is utilised. May be a silly question i just havent given it any thought before.
Based on a 10Mbit circuit of which i wanted to prioritise 2Mbit for voice and shape default traffic to 8Mbit would the following policy be correct or would i need to change the "shape average" statement to 10000000?
policy-map ETHERNET-WAN-OUT
class Voice-Media
priority 2000
class Voice-Signalling
bandwidth 8
class class-default
set ip dscp default
fair-queue
policy-map 10M-ETHERNET-WAN-OUT
class class-default
shape average 8000000
service-policy ETHERNET-WAN-OUT
Regards
Solved! Go to Solution.
02-12-2009 07:38 AM
If you want to fully utilize the 10Mbps circuit, then the answer is Yes. You need to modify your shape average statement to reflect just that.
Please refer to the documentation for more info on the command:
http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_s1.html#wp1014690
HTH,
__
Edison.
02-12-2009 07:38 AM
If you want to fully utilize the 10Mbps circuit, then the answer is Yes. You need to modify your shape average statement to reflect just that.
Please refer to the documentation for more info on the command:
http://www.cisco.com/en/US/docs/ios/qos/command/reference/qos_s1.html#wp1014690
HTH,
__
Edison.
02-12-2009 07:49 AM
Much appreciated, thank you
02-12-2009 09:57 AM
Just wanted to confirm you also realize you're shaping all traffic to 8 Mbps (assuming you use policy 10M-ETHERNET-WAN-OUT on the interface) and within that 8 Mbps you've allocated LLQ for 2 Mbps.
If the interface was 10 Mbps, you could use just policy ETHERNET-WAN-OUT (assuming you don't need to restrict all traffic to 8 Mbps).
Also, within policy ETHERNET-WAN-OUT, my belief is on most Cisco routers, FQ with class-default might preclude other non-LLQ classes from obtaining their minimum bandwidth. I.e. class Voice-Signalling might not obtain its bandwidth guarantee.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide