[c-nsp] QOS - Multilink Question

[Paul Stewart]

Hey folks...  I haven't run across this before so hoping someone can suggest
a quick fix..;)

 

Cisco 6500 - off this box feeding three T1's out to customer prem using
multilink PPP. These are full rate T1:

 

dis1-rtr-pt#sh interfaces Serial 5/0/2:21

Serial5/0/2:21 is up, line protocol is up

  Hardware is Multichannel T1

  Description: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

  MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,

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

  Encapsulation PPP, crc 16, Data non-inverted

  Keepalive set (10 sec)

  LCP Open, multilink Open

  Last input 00:00:05, output 00:00:05, output hang never

  Last clearing of "show interface" counters 00:00:01

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

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     8 packets input, 630 bytes, 0 no buffer

     Received 0 broadcasts (0 IP multicasts)

     0 runts, 0 giants, 0 throttles

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

     7 packets output, 594 bytes, 0 underruns

     0 output errors, 0 collisions, 0 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions no alarm present

  Timeslot(s) Used:1-24, subrate: 64Kb/s, transmit delay is 0 flags

 

I have a very basis QOS profile to apply on the multilink interface but it
keeps telling me there isn't enough bandwidth available - the QOS config
does a match on DSCP=EF and then strict priority of 2000.  Can you not
exceed a strict priority higher than one of the physical interfaces in a
multilink bundle??

 

class-map match-any KCU-Mapleridge-MAP

  match  dscp ef

 

policy-map KCU-Mapleridge

  class KCU-Mapleridge-MAP

    priority 2000

 

interface Multilink21

 description xxxxxxxxxxxxxxxxxxxxxx

 bandwidth 4608

 ip address xx.xx.xx.217 255.255.255.248

 ppp multilink

 ppp multilink interleave

 multilink-group 21

end

 

dis1-rtr-pt#conf t

dis1-rtr-pt(config)#interface Multilink 21

dis1-rtr-pt(config-if)#service-policy output KCU-Mapleridge

bandwidth of 2000 kbps is not available (1536).

 

Appreciate any input...

 

Paul