04-30-2009 07:37 AM - edited 03-04-2019 04:35 AM
When I apply a service policy that has shaping to a router interface, like on a 7206, the 'show policy-map int xxx' has a "Shaping Active" field that will show you if shaping is actually occurring as in this output:
BVU-RT7206A-MDF#sh policy-map int g0/3.82
GigabitEthernet0/3.82
Service-policy output: WAN-100MB-speed_with_10MB_voice_Imaging
Class-map: class-default (match-any)
2009821825 packets, 505756075940 bytes
30 second offered rate 6251000 bps, drop rate 0 bps
Match: any
Traffic Shaping
Target/Average Byte Sustain Excess Interval Increment
Rate Limit bits/int bits/int (ms) (bytes)
99920000/99920000 624500 2498000 2498000 25 312250
Adapt Queue Packets Bytes Packets Bytes Shaping
Active Depth Delayed Delayed Active
- 0 2009821859 3244902755 0 0 no <--- will show 'no' or 'yes'
** This output even shows how many packets have been delayed due to shaping.
-------------------
But when a shaping service policy is applied to a SPA routed interface, there is no such field to show whether shaping is active or not, or whether any packets have been queued due to shaping, as in this output:
ROC-7604-B#sh policy-map int g2/1/0.122
GigabitEthernet2/1/0.122
Service-policy output: WAN-ERG_with_24voice
Counters last updated 00:00:08 ago
Class-map: class-default (match-any)
7404685 packets, 3163108752 bytes
30 second offered rate 1811000 bps, drop rate 0 bps
Match: any
Queueing
queue limit 1998 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 7397565/3159181928
shape (average) cir 7992000, bc 31968, be 31968
target shape rate 7992000
How is one to know if shaping is active on a SPA interface?
04-30-2009 05:04 PM
Hi,
You will know shaping is on if the queue depth is higher than 0 but it's real-time value so I agree you will notice it only when you are sending traffic around the CIR for a significant period of time.
HTH
Laurent.
05-01-2009 06:01 AM
May I request a counter be installed that will let us know how many packets have been shaped? Something that will let us know that this is working? Sometimes we end of going on faith that our configuration is working when there is no tangible sign that it is.
What would it take to get something like that going?
05-01-2009 06:58 AM
Hi,
For feature request, you need to work with your Cisco account team who could help you to build a business case.
HTH
Laurent.
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