Re: CB-GTS with CB-WFQ using NBAR

I just tried implementing CB-GTS myself and it seems to be working fine.

    R1#show run | s class|policy|service-policy|interface Serial1/0

    class-map match-all R4R5
      match fr-dlci 102
      match protocol icmp

    policy-map GTS
      class R4R5
        drop

    policy-map SHAPE
      class class-default
       shape average 8000
       service-policy GTS

    interface Serial1/0
      service-policy output SHAPE

*
**Checking ping via DLCI 102:*

    R4#ping 25.25.25.5

    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to 25.25.25.5, timeout is 2 seconds:
    .....
    Success rate is 0 percent (0/5)

*Checking ping via DLCI 103 *

    R4#ping 36.36.36.6

    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to 36.36.36.6, timeout is 2 seconds:
    !!!!!
    Success rate is 100 percent (5/5), round-trip min/avg/max = 44/58/64 ms

*Checking matches in service policy on the interface:*

    R1#show policy-map inter ser1/0

      Serial1/0

       Service-policy output: SHAPE

         Class-map: class-default (match-any)
           24 packets, 1680 bytes
           5 minute offered rate 0 bps, drop rate 0 bps
           Match: any
           Traffic Shaping
                Target/Average Byte Sustain Excess Interval
    Increment
                  Rate Limit bits/int bits/int (ms) (bytes)
                  8000/8000 2000 8000 8000 1000 1000

             Adapt Queue Packets Bytes Packets Bytes Shaping
             Active Depth Delayed Delayed Active
             - 0 11 1048 0 0 no

           Service-policy : GTS

             Class-map: R4R5 (match-all)
    *5 packets, 520 bytes*
               5 minute offered rate 0 bps, drop rate 0 bps
               Match: fr-dlci 102
               Match: protocol icmp
    *drop*

             Class-map: class-default (match-any)
               19 packets, 1160 bytes
               5 minute offered rate 0 bps, drop rate 0 bps
               Match: any

best regards,
Arseniy S. Ivanov

On 16.03.2014 20:08, Sam Bibby wrote:
> Hey all,
>
> Every time i think I have a grasp on QoS I hit more issues.
>
> Firstly here is what I think I know (don't worry, its not much.. random
> numbers used, typos excused)
>
> 1) When you setup just QoS using the MQC you can match protocols under
> class-maps via NBAR example:
>
> !
> class-map CMAP_ICMP
> match proto icmp
> !
> policy-map PMAP_ICMP
> class CMAP_ICMP
> priority 54 4000
> !
>
> 2) When you shape you use the CB-GTS to shaping as follows:
> !
> policy-map PMAP_SHAPE
> class class-default
> shape ave 51200 8000 0
> !
>
>
>
> Ok, so what gives here & my question(s) arise.
>
> 1) If i want to then use my CBWFQ policy that uses NBAR matching I cannot
> nest this inside a CB-GTS like so;
>
> !
> policy-map PMAP_SHAPE
> shape ave 51200 8000 0
> service-policy PMAP_ICMP
> !
>
> *note i was applying this to a sub-interface fe0/0.1 if that is why I had
> problems.
>
>
>
> 2) To make this work, I need to change my CBWFQ policy so that it does not
> use NBAR matching as follows:
>
> !
> ip access-list ext ACL_ICMP
> permit icmp any any
> !
> class-map CMAP_ICMP
> match access-gro ACL_ICMP
> !
>
> *And this now will nest happily under the CB-GTS.
>
>
>
> So, and thanks for sticking with me, what I want to know is, is this
> statement true:
>
>
> *When performing CB-GTS (regardless of interface) you cannot nest a CB-WFQ
> policy that uses NBAR matching.....*
>
> I have done my googling, but you know I find it easier to write this out,
> helps me visualize the problem.
>
> If you can put me right, I would be most grateful.. :)
>
>
> Your pal,
>
> \Sam
>
>
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Received on Sun Mar 16 2014 - 21:20:13 ART