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Beginner

Policy map QoS Issues

I have the following policy maps in on my 6509:

policy-map Customer    

  class QoS-voice

    shape average 2000000

  class class-default

    fair-queue

When I apply it to an interface (int vlan1005)- I get:

Router (config-if)#service-policy output Customer

shape average command is not supported for this interface

Configuration failed!

This also happens with priority, bandwidth, etc.  How can I configure QoS on this 6509 then?

4 REPLIES 4
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Advisor

Hi,

apply it to physical or subinterface.

Regards.

Alain.

Don't forget to rate helpful posts.
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It cannot be applied to the physical/subinterface.  The connection comes in on another switch.

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Hall of Fame Guru

gregwoodson wrote:

I have the following policy maps in on my 6509:

policy-map Customer    

  class QoS-voice

    shape average 2000000

  class class-default

    fair-queue

When I apply it to an interface (int vlan1005)- I get:

Router (config-if)#service-policy output Customer

shape average command is not supported for this interface

Configuration failed!

This also happens with priority, bandwidth, etc.  How can I configure QoS on this 6509 then?

Greg

Shaping is only supported on a very limited set of WAN interfaces for the 6500 switch so even if you applied it to the physical interface, unless it was one of these specific WAN interfaces, it wouldn't be accepted.

If you are trying to apply this policy to a standard linecard in the 6500 then it won't work because the 6500 uses PFC QOS and not MQC. You will need to convert it to PFC QOS. The 6500 does support egress policing so you could use that although obviously policing can be more disruptive to traffic than shaping but that's all you can really do if you want to rate-limit the traffic.

An alternative would be to actually configure the physical port with PFC QOS and use the strict priority queue for the VOIP traffic.

See this link for the 6500 QOS details (there are some examples at the end of the chapter) -

6500 QOS

Jon

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Have a 6509 module WS-X6748-SFP with DFC3 that needs priority queueing for egress traffic over Gigaman links in a MAN.  I'm more a fan of software queueing, than hardware queueing.  But I'm not finding any documentation about egress policy-maps for this.  The best information that I've found, so far, states that this module supports 1P3Q8T hardware queueing and gives a good  configuration example using WRED and CoS mappings.  Is this the only option I have?

http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND_40/QoSCampus_40.pdf

Starting page 2-158

Example 2-111 1P3Q8T (CoS-to-Queue) Egress Queuing Configuration Example on a Catalyst 6500-E

! This section configures 1P3Q8T (CoS-Based) Egress Queuing

C6500-E(config)#interface range GigabitEthernet 2/1-48

C6500-E(config-if-range)#

wrr-queue queue-limit 20 25 40

! Allocates 20% of the buffers to Q1, 25% to Q2 and 40% to Q3

C6500-E(config-if-range)#

priority-queue queue-limit 15

! Allocates 15% of the buffers to the PQ

C6500-E(config-if-range)#

wrr-queue bandwidth 5 25 40

! Allocates 5% BW to Q1, 25% BW to Q2 and 40% BW to Q3

! This section enables WRED on Queues 1 through 3

C6500-E(config-if-range)#

wrr-queue random-detect 1

! Enables WRED on Q1

C6500-E(config-if-range)#

wrr-queue random-detect 2

! Enables WRED on Q2

C6500-E(config-if-range)#

wrr-queue random-detect 3

! Enables WRED on Q3

! This section configures WRED thresholds for Queues 1 through 3

C6500-E(config-if-range)#

wrr-queue random-detect max-threshold 1 100 100 100 100 100 100

100 100

! Sets all WRED max thresholds on Q1 to 100%

C6500-E(config-if-range)#

wrr-queue random-detect min-threshold 1 80 100 100 100 100 100

100 100

! Sets Q1T1 min WRED threshold to 80%; all others set to 100%

C6500-E(config-if-range)#

wrr-queue random-detect max-threshold 2 100 100 100 100 100 100

100 100

! Sets all WRED max thresholds on Q2 to 100%

C6500-E(config-if-range)#

wrr-queue random-detect min-threshold 2 80 100 100 100 100 100

100 100

! Sets Q2T1 min WRED threshold to 80%; all others set to 100%

C6500-E(config-if-range)#

wrr-queue random-detect max-threshold 3 70 80 90 100 100 100 100

100

! Sets Q3T1 max WRED threshold to 70%; Q3T2 max WRED threshold to 80%;

! Sets Q3T3 max WRED threshold to 90%; Q3T4 max WRED threshold to 100%

C6500-E(config-if-range)#

wrr-queue random-detect min-threshold 3 60 70 80 90 100 100 100

100

! Sets Q3T1 min WRED threshold to 60%; Q3T2 min WRED threshold to 70%;

! Sets Q3T3 min WRED threshold to 80%; Q3T4 min WRED threshold to 90%

! This section configures the CoS-to-Queue/Threshold mappings

C6500-E(config-if-range)#

wrr-queue cos-map 1 1 1

! Maps CoS 1 (Scavenger and Bulk Data) to Q1T1

C6500-E(config-if-range)#

wrr-queue cos-map 2 1 0

! Maps CoS 0 (Best Effort) to Q2T1

C6500-E(config-if-range)#

wrr-queue cos-map 3 1 2

! Maps CoS 2 (Network Management and Transactional Data) to Q3T1

C6500-E(config-if-range)#

wrr-queue cos-map 3 2 3

! Maps CoS 3 (Signaling and Multimedia Streaming) to Q3T2

C6500-E(config-if-range)#

wrr-queue cos-map 3 3 6

! Maps CoS 6 (Internetwork Control) to Q3T3

C6500-E(config-if-range)#

wrr-queue cos-map 3 4 7

! Maps CoS 7 (Network Control) to Q3T4

C6500-E(config-if-range)#

priority-queue cos-map 1 4 5

! Maps CoS 4 (Realtime Interactive and Multimedia Conferencing) to PQ

! Maps CoS 5 (VoIP and Broadcast Video) to the PQ