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Quick QoS question. Trying to understand a config

abrrymnvette
Level 1
Level 1

We have QoS setup and I'm trying to understand part of it to track down an issue I'm having with video packet loss. 

 

This is the external interface on my 3825 router. 

 

interface GigabitEthernet0/1
  bandwidth 100000
  ip flow ingress
 ip flow egress
 ip route-cache flow
 load-interval 30
 duplex full
 speed 100
 media-type rj45
 service-policy input cache
 service-policy output 100M-Shaper

 

Here is the policy-map

policy-map ISP-CE
 class Voice-RoomVideo
  priority percent 15
 class Network-Control
  bandwidth percent 5
 class Internetwork-Control
  bandwidth percent 2
 class Desktop-Video
  bandwidth percent 25
  fair-queue
  random-detect dscp-based
 class Signaling
  bandwidth percent 3
 class Transactional-Data
  bandwidth percent 30
  fair-queue
  random-detect dscp-based
 class Bulk-Data
  bandwidth percent 5
  fair-queue
  random-detect dscp-based
 class Scavenger
  bandwidth percent 1
  set dscp default
 class class-default
  bandwidth percent 14
  fair-queue
  random-detect dscp-based

policy-map cache
 class cache
  police rate percent 15 peak-rate percent 20

policy-map 100M-Shaper
 class class-default
  shape average 100000000
  service-policy ISP-CE

 

The policy-map 100M-Shaper, looks like it is shaping to 100M for the default class? But then it calls in the ISP-CE policy after the default class is taken care of? 

1 Accepted Solution

Accepted Solutions

Joseph W. Doherty
Hall of Fame
Hall of Fame

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 you're seeing is a hierarchical policy.  The child/subordinate policy determines how the shaped traffic is managed.

View solution in original post

1 Reply 1

Joseph W. Doherty
Hall of Fame
Hall of Fame

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 you're seeing is a hierarchical policy.  The child/subordinate policy determines how the shaped traffic is managed.

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