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New Member

QOS Policy Question

I have a nested policy for an MPLS connection that supports 4 T1's on the far ends.  Below is a copy.  My question is this...why when I do a show int f0/0 where the policy is applied does it show the queueing to be FIFO..and although  I'm trying to classify and priority queue the Nortel voip traffic, when one of the sites pulls a large file of the server the voip gets stomped on.  What am I missing?

policy-map MPLS_T1_POLICY

class BGP_TRAFFIC

  bandwidth percent 10

class RECTRAC

  bandwidth percent 60

class HIGH_PRIORITY_TRAFFIC

  priority percent 15

class class-default

  fair-queue 256

  random-detect

policy-map T1_BANDWIDTH

class FIRE_E_HIGH_ST

  shape average 1536000 192000

  service-policy MPLS_T1_POLICY

class FIRE_250

  shape average 1536000 192000

  service-policy MPLS_T1_POLICY

class WASHINGTON_POOL

  shape average 1536000 192000

  service-policy MPLS_T1_POLICY

class MEADE_POOL

  shape average 1536000 192000

  service-policy MPLS_T1_POLICY

FastEthernet0/0 is up, line protocol is up

  Hardware is Gt96k FE, address is 0023.5e61.b3ec (bia 0023.5e61.b3ec)

  Description: MPLS 60.DATA.106731.1.CFW

  Internet address is 10.30.9.2/30

  MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA, loopback not set

  Keepalive set (10 sec)

  Full-duplex, 10Mb/s, 100BaseTX/FX

  ARP type: ARPA, ARP Timeout 04:00:00

  Last input 00:00:17, output 00:00:00, output hang never

  Last clearing of "show interface" counters 04:25:37

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 221

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  30 second input rate 23000 bits/sec, 12 packets/sec

  30 second output rate 71000 bits/sec, 11 packets/sec

     325616 packets input, 84566453 bytes

     Received 265 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored

     0 watchdog

     0 input packets with dribble condition detected

     317992 packets output, 163926131 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 unknown protocol drops

     0 babbles, 0 late collision, 0 deferred

     0 lost carrier, 0 no carrier

5 REPLIES
Super Bronze

QOS Policy Question

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

As a preliminary guess, your shaper Tc intervals may be too large for VoIP on T1s.  Suggest a Tc of 10ms.

What does show policy-map interface reveal?

What's the platform and IOS?

New Member

QOS Policy Question

The platform is an 1841 running Version 12.4(13r)T

Below is the policy-map interface which again, looks correct, but I'm sitll wondering why when I do a show int f0/0 it shows FIFO as the queueing method..

  Service-policy output: T1_BANDWIDTH

    Class-map: FIRE_E_HIGH_ST (match-any)

      11341 packets, 2404865 bytes

      30 second offered rate 0 bps, drop rate 0 bps

      Match: access-group name FIRE_E_HIGH_ST

        11341 packets, 2404865 bytes

        30 second rate 0 bps

      Traffic Shaping

           Target/Average   Byte   Sustain   Excess    Interval  Increment

             Rate           Limit  bits/int  bits/int  (ms)      (bytes) 

          1536000/1536000   48000  192000    192000    125       24000   

        Adapt  Queue     Packets   Bytes     Packets   Bytes     Shaping

        Active Depth                         Delayed   Delayed   Active

        -      0         11341     2404865   0         0         no

      Service-policy : MPLS_T1_POLICY

        Class-map: BGP_TRAFFIC (match-all)

          0 packets, 0 bytes

--More--                                     30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name BGP_TRAFFIC

          Queueing

            Output Queue: Conversation 265

            Bandwidth 10 (%)

            Bandwidth 153 (kbps)Max Threshold 64 (packets)

            (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

        Class-map: RECTRAC (match-any)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name RECTRAC

            0 packets, 0 bytes

            30 second rate 0 bps

          Queueing

            Output Queue: Conversation 266

            Bandwidth 60 (%)

            Bandwidth 921 (kbps)Max Threshold 64 (packets)

            (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

          QoS Set

            dscp af41

--More--                                         Packets marked 0

        Class-map: HIGH_PRIORITY_TRAFFIC (match-any)

          4281 packets, 343674 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: protocol sip

            0 packets, 0 bytes

            30 second rate 0 bps

          Match: protocol ssh

            2081 packets, 208398 bytes

            30 second rate 0 bps

          Match: access-group name NORTEL_VOIP

            2200 packets, 135276 bytes

            30 second rate 0 bps

          Queueing

            Strict Priority

            Output Queue: Conversation 264

            Bandwidth 15 (%)

            Bandwidth 230 (kbps) Burst 5750 (Bytes)

            (pkts matched/bytes matched) 0/0

            (total drops/bytes drops) 0/0

          QoS Set

            dscp ef

--More--                                         Packets marked 4281

        Class-map: class-default (match-any)

          7060 packets, 2061191 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: any

          Queueing

            Flow Based Fair Queueing

            Maximum Number of Hashed Queues 256

        (total queued/total drops/no-buffer drops) 0/0/0

             exponential weight: 9

  class    Transmitted      Random drop      Tail drop    Minimum Maximum  Mark

           pkts/bytes       pkts/bytes       pkts/bytes    thresh  thresh  prob

      0    7021/2057681         0/0              0/0           20      40  1/10

      1       0/0               0/0              0/0           22      40  1/10

      2       0/0               0/0              0/0           24      40  1/10

      3       0/0               0/0              0/0           26      40  1/10

      4       0/0               0/0              0/0           28      40  1/10

      5       0/0               0/0              0/0           30      40  1/10

      6      39/3510            0/0              0/0           32      40  1/10

      7       0/0               0/0              0/0           34      40  1/10

   rsvp       0/0               0/0              0/0           36      40  1/10

--More--                          

    Class-map: FIRE_250 (match-any)

      85273 packets, 58906232 bytes

      30 second offered rate 1000 bps, drop rate 0 bps

      Match: access-group name FIRE_250

        85273 packets, 58906232 bytes

        30 second rate 1000 bps

      Traffic Shaping

           Target/Average   Byte   Sustain   Excess    Interval  Increment

             Rate           Limit  bits/int  bits/int  (ms)      (bytes) 

          1536000/1536000   48000  192000    192000    125       24000   

        Adapt  Queue     Packets   Bytes     Packets   Bytes     Shaping

        Active Depth                         Delayed   Delayed   Active

        -      0         84677     58463171  16804     14244365  no

      Service-policy : MPLS_T1_POLICY

        Class-map: BGP_TRAFFIC (match-all)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name BGP_TRAFFIC

--More--                                     Queueing

            Output Queue: Conversation 265

            Bandwidth 10 (%)

            Bandwidth 153 (kbps)Max Threshold 64 (packets)

            (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

        Class-map: RECTRAC (match-any)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name RECTRAC

            0 packets, 0 bytes

            30 second rate 0 bps

          Queueing

            Output Queue: Conversation 266

            Bandwidth 60 (%)

            Bandwidth 921 (kbps)Max Threshold 64 (packets)

            (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

          QoS Set

            dscp af41

              Packets marked 0

--More--                                   Class-map: HIGH_PRIORITY_TRAFFIC (match-any)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: protocol sip

            0 packets, 0 bytes

            30 second rate 0 bps

          Match: protocol ssh

            0 packets, 0 bytes

            30 second rate 0 bps

          Match: access-group name NORTEL_VOIP

            0 packets, 0 bytes

            30 second rate 0 bps

          Queueing

            Strict Priority

            Output Queue: Conversation 264

            Bandwidth 15 (%)

            Bandwidth 230 (kbps) Burst 5750 (Bytes)

            (pkts matched/bytes matched) 0/0

            (total drops/bytes drops) 0/0

          QoS Set

            dscp ef

              Packets marked 0

--More--                                   Class-map: class-default (match-any)

          85273 packets, 58906232 bytes

          30 second offered rate 1000 bps, drop rate 0 bps

          Match: any

          Queueing

            Flow Based Fair Queueing

            Maximum Number of Hashed Queues 256

        (total queued/total drops/no-buffer drops) 0/596/0

             exponential weight: 9

  class    Transmitted      Random drop      Tail drop    Minimum Maximum  Mark

           pkts/bytes       pkts/bytes       pkts/bytes    thresh  thresh  prob

      0   84449/58437023      248/183550       348/259511      20      40  1/10

      1       0/0               0/0              0/0           22      40  1/10

      2     228/26148           0/0              0/0           24      40  1/10

      3       0/0               0/0              0/0           26      40  1/10

      4       0/0               0/0              0/0           28      40  1/10

      5       0/0               0/0              0/0           30      40  1/10

      6       0/0               0/0              0/0           32      40  1/10

      7       0/0               0/0              0/0           34      40  1/10

   rsvp       0/0               0/0              0/0           36      40  1/10

--More--                               Class-map: WASHINGTON_POOL (match-all)

      31527 packets, 22233998 bytes

      30 second offered rate 4000 bps, drop rate 0 bps

      Match: access-group name WASHINGTON_POOL

      Traffic Shaping

           Target/Average   Byte   Sustain   Excess    Interval  Increment

             Rate           Limit  bits/int  bits/int  (ms)      (bytes) 

          1536000/1536000   48000  192000    192000    125       24000   

        Adapt  Queue     Packets   Bytes     Packets   Bytes     Shaping

        Active Depth                         Delayed   Delayed   Active

        -      0         31527     22233998  1059      1427629   no

      Service-policy : MPLS_T1_POLICY

        Class-map: BGP_TRAFFIC (match-all)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name BGP_TRAFFIC

          Queueing

            Output Queue: Conversation 265

            Bandwidth 10 (%)

            Bandwidth 153 (kbps)Max Threshold 64 (packets)

--More--                                       (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

        Class-map: RECTRAC (match-any)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name RECTRAC

            0 packets, 0 bytes

            30 second rate 0 bps

          Queueing

            Output Queue: Conversation 266

            Bandwidth 60 (%)

            Bandwidth 921 (kbps)Max Threshold 64 (packets)

            (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

          QoS Set

            dscp af41

              Packets marked 0

        Class-map: HIGH_PRIORITY_TRAFFIC (match-any)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: protocol sip

--More--                                       0 packets, 0 bytes

            30 second rate 0 bps

          Match: protocol ssh

            0 packets, 0 bytes

            30 second rate 0 bps

          Match: access-group name NORTEL_VOIP

            0 packets, 0 bytes

            30 second rate 0 bps

          Queueing

            Strict Priority

            Output Queue: Conversation 264

            Bandwidth 15 (%)

            Bandwidth 230 (kbps) Burst 5750 (Bytes)

            (pkts matched/bytes matched) 0/0

            (total drops/bytes drops) 0/0

          QoS Set

            dscp ef

              Packets marked 0

        Class-map: class-default (match-any)

          31527 packets, 22233998 bytes

          30 second offered rate 4000 bps, drop rate 0 bps

          Match: any

--More--                                     Queueing

            Flow Based Fair Queueing

            Maximum Number of Hashed Queues 256

        (total queued/total drops/no-buffer drops) 0/0/0

             exponential weight: 9

  class    Transmitted      Random drop      Tail drop    Minimum Maximum  Mark

           pkts/bytes       pkts/bytes       pkts/bytes    thresh  thresh  prob

      0   31471/22228958        0/0              0/0           20      40  1/10

      1       0/0               0/0              0/0           22      40  1/10

      2       0/0               0/0              0/0           24      40  1/10

      3       0/0               0/0              0/0           26      40  1/10

      4       0/0               0/0              0/0           28      40  1/10

      5       0/0               0/0              0/0           30      40  1/10

      6      56/5040            0/0              0/0           32      40  1/10

      7       0/0               0/0              0/0           34      40  1/10

   rsvp       0/0               0/0              0/0           36      40  1/10

    Class-map: MEADE_POOL (match-all)

      61198 packets, 23353892 bytes

      30 second offered rate 11000 bps, drop rate 0 bps

      Match: access-group name MEADE_POOL

--More--                                 Traffic Shaping

           Target/Average   Byte   Sustain   Excess    Interval  Increment

             Rate           Limit  bits/int  bits/int  (ms)      (bytes) 

          1536000/1536000   48000  192000    192000    125       24000   

        Adapt  Queue     Packets   Bytes     Packets   Bytes     Shaping

        Active Depth                         Delayed   Delayed   Active

        -      0         61198     23353892  0         0         no

      Service-policy : MPLS_T1_POLICY

        Class-map: BGP_TRAFFIC (match-all)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name BGP_TRAFFIC

          Queueing

            Output Queue: Conversation 265

            Bandwidth 10 (%)

            Bandwidth 153 (kbps)Max Threshold 64 (packets)

            (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

        Class-map: RECTRAC (match-any)

--More--                                     0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: access-group name RECTRAC

            0 packets, 0 bytes

            30 second rate 0 bps

          Queueing

            Output Queue: Conversation 266

            Bandwidth 60 (%)

            Bandwidth 921 (kbps)Max Threshold 64 (packets)

            (pkts matched/bytes matched) 0/0

        (depth/total drops/no-buffer drops) 0/0/0

          QoS Set

            dscp af41

              Packets marked 0

        Class-map: HIGH_PRIORITY_TRAFFIC (match-any)

          0 packets, 0 bytes

          30 second offered rate 0 bps, drop rate 0 bps

          Match: protocol sip

            0 packets, 0 bytes

            30 second rate 0 bps

          Match: protocol ssh

            0 packets, 0 bytes

--More--                                       30 second rate 0 bps

          Match: access-group name NORTEL_VOIP

            0 packets, 0 bytes

            30 second rate 0 bps

          Queueing

            Strict Priority

            Output Queue: Conversation 264

            Bandwidth 15 (%)

            Bandwidth 230 (kbps) Burst 5750 (Bytes)

            (pkts matched/bytes matched) 0/0

            (total drops/bytes drops) 0/0

          QoS Set

            dscp ef

              Packets marked 0

        Class-map: class-default (match-any)

          61198 packets, 23353892 bytes

          30 second offered rate 11000 bps, drop rate 0 bps

          Match: any

          Queueing

            Flow Based Fair Queueing

            Maximum Number of Hashed Queues 256

        (total queued/total drops/no-buffer drops) 0/0/0

--More--                                        exponential weight: 9

  class    Transmitted      Random drop      Tail drop    Minimum Maximum  Mark

           pkts/bytes       pkts/bytes       pkts/bytes    thresh  thresh  prob

      0   61096/23344712        0/0              0/0           20      40  1/10

      1       0/0               0/0              0/0           22      40  1/10

      2       0/0               0/0              0/0           24      40  1/10

      3       0/0               0/0              0/0           26      40  1/10

      4       0/0               0/0              0/0           28      40  1/10

      5       0/0               0/0              0/0           30      40  1/10

      6     102/9180            0/0              0/0           32      40  1/10

      7       0/0               0/0              0/0           34      40  1/10

   rsvp       0/0               0/0              0/0           36      40  1/10

    Class-map: class-default (match-any)

      5847 packets, 612635 bytes

      30 second offered rate 0 bps, drop rate 0 bps

      Match: any

Super Bronze

QOS Policy Question

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

Your Tc is 125ms, likely too excessive for VoIP.

Try: shape average 1536000 1920

Why do you have SSH in your LLQ?

New Member

QOS Policy Question

Ok, I will try changing the settings as suggested.  SSH was put in there to guarantee management access to the router and switch onsite during times of congestion.  Should it not be?

Super Bronze

QOS Policy Question

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

Mark Sargent wrote:

Ok, I will try changing the settings as suggested.  SSH was put in there to guarantee management access to the router and switch onsite during times of congestion.  Should it not be?

I would recommend SSH not be in LLQ.

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