Queueuing question - available bandwidth?

[m.lammerse]

I have here a cbwfq config on a 384kbps pvc. I don't understand why the router says there is 96kbps bandwidth available. Could someone explain?

router#sh queueing int atm1/0.14 vc 0/113

Interface ATM1/0.14 VC 0/113

Queueing strategy: weighted fair

Output queue: 0/96/64/2497 (size/max total/threshold/drops)

Conversations 0/19/32 (active/max active/max total)

Reserved Conversations 1/1 (allocated/max allocated)

Available Bandwidth 96 kilobits/sec <-------------------------- why only 96kbps?

This is the config:

!

ip access-list extended ospf

permit ospf any any

!

class-map match-all ospf

match access-group name ospf

!96*

!

policy-map wfq

class ospf

bandwidth percent 50

class class-default

fair-queue

random-detect

!

interface ATM1/0.14 point-to-point

bandwidth 384

ip address x.x.x.x 255.255.255.252

ip mtu 1500

no ip mroute-cache

pvc 0/113

vc-hold-queue 96

protocol ip y.y.y.y broadcast

vbr-nrt 482 384

encapsulation aal5snap

service-policy output wfq

!

end

[b-ulrich]

Hi, try a 'show policy-map interface atm1/0.14 point to point'. You may see closer to the allocated bandwidth you are looking for.

[smif101]

The available bandwidth is really nothing but a math formula that the router uses. For a normal interface it takes whatever you have under the bandwidth statement and then automatically takes 25% off (for admin overhead and routing protocols) of it to give you the available bandwidth. If you have any QoS setup it will subtract that too. It is morless a call admission control thing.

[m.lammerse]

So, it is the bandwidth I have _left_ rather than available in total. Is that correct? Would that bandwidth be assigned to the default class in this case? Assuming congestion conditions, ofcourse.