From: Ash (nester2k@gmail.com)
Date: Tue Oct 02 2007 - 13:12:15 ART
its a macro based on well defined numbers. numbers that are tweaked for
optimizing VOIP qos ONLY. truly meant for ppl who either don't understand
QOS or don't have the cycles to invest in learning the queuing
structures/mechanisms of the catalyst linecards which alone in itself can be
a project especially for the 6500's :)
On 10/2/07, Antonio Soares <amsoares@netcabo.pt> wrote:
>
> Thanks Ash and Avner for you feedback.
>
> You both suggest the use of Auto-QoS. I'll take a closer look although i'm
> not a big fan of these type of features. You insert one command and the
> router/switch generates dozens for you. I tested the command "auto qos
> voip
> cisco-phone" in a 3750 and got this:
>
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
> !
> mls qos map cos-dscp 0 8 16 26 32 46 48 56
> mls qos srr-queue input bandwidth 90 10
> mls qos srr-queue input threshold 1 8 16
> mls qos srr-queue input threshold 2 34 66
> mls qos srr-queue input buffers 67 33
> mls qos srr-queue input cos-map queue 1 threshold 2 1
> mls qos srr-queue input cos-map queue 1 threshold 3 0
> mls qos srr-queue input cos-map queue 2 threshold 1 2
> mls qos srr-queue input cos-map queue 2 threshold 2 4 6 7
> mls qos srr-queue input cos-map queue 2 threshold 3 3 5
> mls qos srr-queue input dscp-map queue 1 threshold 2 9 10 11 12 13 14 15
> mls qos srr-queue input dscp-map queue 1 threshold 3 0 1 2 3 4 5 6 7
> mls qos srr-queue input dscp-map queue 1 threshold 3 32
> mls qos srr-queue input dscp-map queue 2 threshold 1 16 17 18 19 20 21 22
> 23
> mls qos srr-queue input dscp-map queue 2 threshold 2 33 34 35 36 37 38 39
> 48
> mls qos srr-queue input dscp-map queue 2 threshold 2 49 50 51 52 53 54 55
> 56
> mls qos srr-queue input dscp-map queue 2 threshold 2 57 58 59 60 61 62 63
> mls qos srr-queue input dscp-map queue 2 threshold 3 24 25 26 27 28 29 30
> 31
> mls qos srr-queue input dscp-map queue 2 threshold 3 40 41 42 43 44 45 46
> 47
> mls qos srr-queue output cos-map queue 1 threshold 3 5
> mls qos srr-queue output cos-map queue 2 threshold 3 3 6 7
> mls qos srr-queue output cos-map queue 3 threshold 3 2 4
> mls qos srr-queue output cos-map queue 4 threshold 2 1
> mls qos srr-queue output cos-map queue 4 threshold 3 0
> mls qos srr-queue output dscp-map queue 1 threshold 3 40 41 42 43 44 45
> 46
> 47
> mls qos srr-queue output dscp-map queue 2 threshold 3 24 25 26 27 28 29
> 30
> 31
> mls qos srr-queue output dscp-map queue 2 threshold 3 48 49 50 51 52 53
> 54
> 55
> mls qos srr-queue output dscp-map queue 2 threshold 3 56 57 58 59 60 61
> 62
> 63
> mls qos srr-queue output dscp-map queue 3 threshold 3 16 17 18 19 20 21
> 22
> 23
> mls qos srr-queue output dscp-map queue 3 threshold 3 32 33 34 35 36 37
> 38
> 39
> mls qos srr-queue output dscp-map queue 4 threshold 1 8
> mls qos srr-queue output dscp-map queue 4 threshold 2 9 10 11 12 13 14 15
> mls qos srr-queue output dscp-map queue 4 threshold 3 0 1 2 3 4 5 6 7
> mls qos queue-set output 1 threshold 1 138 138 92 138
> mls qos queue-set output 1 threshold 2 138 138 92 400
> mls qos queue-set output 1 threshold 3 36 77 100 318
> mls qos queue-set output 1 threshold 4 20 50 67 400
> mls qos queue-set output 2 threshold 1 149 149 100 149
> mls qos queue-set output 2 threshold 2 118 118 100 235
> mls qos queue-set output 2 threshold 3 41 68 100 272
> mls qos queue-set output 2 threshold 4 42 72 100 242
> mls qos queue-set output 1 buffers 10 10 26 54
> mls qos queue-set output 2 buffers 16 6 17 61
> mls qos
> !
> interface FastEthernet1/0/1
> srr-queue bandwidth share 10 10 60 20
> srr-queue bandwidth shape 10 0 0 0
> mls qos trust device cisco-phone
> mls qos trust cos
> auto qos voip cisco-phone
> !
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
>
>
> I feel like loosing control when i enable this. And do i really need it ?
>
>
>
> Regards,
>
> Antonio Soares
> CCIE #18473, CCNP, CCIP
> http://pwp.netcabo.pt/amsoares/
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Antonio Soares
> Sent: terga-feira, 2 de Outubro de 2007 2:18
> To: ccielab@groupstudy.com
> Subject: QoS in a Campus Network with IP Telephony Solution
>
> Hello group,
>
> I need to configure QoS in a Campus Network composed of several 3750s,
> 4500s
> and 6500s. I'm looking for the minimal config in order to avoid potential
> voice quality issues. Right now i have this:
>
>
> ##############################
> Catalysts 3750:
> ##############################
> 4Q3T (or 1P3Q3T)
> ##############################
> Ports with PC+IP Phone:
> ##############################
> mls qos trust cos
> mls qos trust extend cos 0
> priority-queue out
> ##############################
> Uplinks:
> ##############################
> mls qos trust dscp
> priority-queue out
> ##############################
>
>
> ##############################
> Catalysts 4500:
> ##############################
> 4Q1T (or 1P3Q1T)
> ##############################
> Ports with PC+IP Phone:
> ##############################
> qos trust cos
> qos trust extend cos 0
> tx-queue 3
> priority high
> ##############################
> Uplinks:
> ##############################
> mls qos trust dscp
> tx-queue 3
> priority high
> ##############################
>
>
> ##############################
> Catalyst 6500:
> ##############################
> Ports with PC+IP Phone:
> ##############################
> WS-X6148-45AF
> 2Q2T
> WS-X6348-RJ-45
> 2Q2T
> ##############################
> mls qos trust cos
> mls qos trust extend cos 0
> ##############################
> Uplinks:
> ##############################
> WS-X6724-SFP
> 1P3Q8T
> ##############################
> mls qos trust dscp
> priority-queue cos-map 1 5
> ##############################
> Voice Servers:
> ##############################
> WS-X6748-GE-TX
> 1P3Q8T
> ##############################
> mls qos trust dscp
> priority-queue cos-map 1 5
> ##############################
>
>
> I know that Cisco provides a QoS Network Design Guide:
>
>
>
http://www.cisco.com/application/pdf/en/us/guest/netsol/ns432/c649/ccmigrati
> on_09186a008049b062.pdf
>
>
> But i really wonder if i need to implement all those complex
> configurations
> to accomplish my goal.
>
>
> Any sugestions are welcome.
>
>
> Thanks.
>
> Regards,
>
> Antonio Soares
> CCIE #18473, CCNP, CCIP
> http://pwp.netcabo.pt/amsoares/
>
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