04-25-2013 04:23 AM - edited 03-04-2019 07:43 PM
Hello, we recently turned up a 100mb circuit between sites, and it is leaving a 1gb interface.
WIth my current QoS setup, I have set the serial bandwith to ~45mb and set my policy map to total less than that. I have the max-reserved-bandwidth set to 90.
With my new interface, what is the easiest way to stop the router from sending 1gb of traffic? I know I can setup shaping and exceed action for each class, but could I just put max-reserved-bandwidth 10 to "shape" the entire interface down to 100mb then leave my class setup as it is? I'd rather see the drops tehn let the carrier do the dropping.
policy-map DR-WANEdge
class DR-Voice
set dscp ef
priority 6144
class DR-Signal
set dscp cs3
bandwidth 1600
random-detect
class Business_Data
set dscp af31
bandwidth 30720
random-detect dscp-based
class Network_Control
set dscp cs6
bandwidth 1536
random-detect
class DR-SAN
set dscp af11
bandwidth 15346
random-detect dscp-based
class DR-Cameras
set dscp cs4
bandwidth 8192
random-detect
class Scavenger
set dscp cs1
bandwidth 1024
class class-default
set dscp default
bandwidth 8192
random-detect
Thanks
Solved! Go to Solution.
04-25-2013 10:30 AM
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The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
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Posting
policy-map DR-WANEdge-100Mbps
class class-defautl
shape average 100000000
service-policy DR-WANEdge
Add above policy. Use on egress interface (out).
04-29-2013 07:41 AM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
What I don't understand now is in the shape policy, everything is considered the "default class". Is that b/c we are simply trying to shape ALL traffic and make congestion at the 100mb mark?
Yes, correct.
Then when you call my actual queue and classification policy via the "service-policy DR-WANEdge" command, it then applies the real class maps and priorities?
Yes, it then is used to prioritize the 100 Mbps.
Basically, the parent shaper makes the gig interface act like a FE interface, which we then have a policy against.
04-25-2013 10:30 AM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
policy-map DR-WANEdge-100Mbps
class class-defautl
shape average 100000000
service-policy DR-WANEdge
Add above policy. Use on egress interface (out).
04-25-2013 10:39 AM
Thanks. I already have the policy I posted (needing to tweak the bandwidth numbers still) on the egress interface out.
Should I take the shape average command and divide it up on each class map as well as leave the bandwidth?
04-25-2013 05:52 PM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
Thanks. I already have the policy I posted (needing to tweak the bandwidth numbers still) on the egress interface out.
Yes, I understand. That's why I wrote add the policy I provided. It uses your existing policy to managed the shaped traffic.
Should I take the shape average command and divide it up on each class map as well as leave the bandwidth?
Normally, no.
04-29-2013 06:45 AM
Ah I see now JosephDoherty,
I didnt' quite understand it at first. What I don't understand now is in the shape policy, everything is considered the "default class". Is that b/c we are simply trying to shape ALL traffic and make congestion at the 100mb mark?
Then when you call my actual queue and classification policy via the "service-policy DR-WANEdge" command, it then applies the real class maps and priorities?
04-29-2013 07:41 AM
Disclaimer
The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.
Liability Disclaimer
In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.
Posting
What I don't understand now is in the shape policy, everything is considered the "default class". Is that b/c we are simply trying to shape ALL traffic and make congestion at the 100mb mark?
Yes, correct.
Then when you call my actual queue and classification policy via the "service-policy DR-WANEdge" command, it then applies the real class maps and priorities?
Yes, it then is used to prioritize the 100 Mbps.
Basically, the parent shaper makes the gig interface act like a FE interface, which we then have a policy against.
04-26-2013 12:39 AM
Hello,
Do you know whats your peak traffic rate is at present?
Your new qos b/w allocation totaling 73mb , this is still under the default reserved 75% bw for the 100mb interface,
So even without speicifying the reserved-bandwidth to 90%, and this would leave 25mb for the class class default to be shared between all other classes in proportion to their b/w allocation numbers if it isn't being utilized.
res
Paul
Please don't forget to rate any posts that have been helpful.
Thanks.
04-29-2013 06:47 AM
pdriver,
Right now we max the 45mb often due to SAN and backup replication, not sure how high it will really go. I will leave much less (5mb maybe for the class default, as what I need to ensure gets through is in the business_data class, default I don't care much about.
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