QoS Error - unsufficent bandwith message

[entireerfurt]

Hello,

i??ve got the message, as i want to apply my prio config to the Interface:

ifs0/0 class voice requested bandwidth 200k, only availael 0K.

Here my config:

class-map match-all dialog

match access-group 142

class-map match-all netzwerk

match access-group 141

class-map match-all realtime

match access-group 140

class-map match-all batch

match access-group 143

class-map match-all VoIP

match access-group 144

!

policy-map NE4-qos_01

! VoIP

class VoIP

priority 200

class netzwerk

bandwidth percent 10

class dialog

bandwidth percent 20

class batch

bandwidth percent 25

class class-default

fair-queue

random-detect

!

interface s0/0

bandwidth 2048

encap PPP

service-policy output NE4-qos_0

whats wrong

thanks a lot

ROnny

[lgijssel]

You migt have fair queuing still active.

Please try the following:

int s0/0

no fair queue

service-policy output NE4-qos_0

end

Regards,

Leo

[globalnettech]

Hello,

I seem to remember that the bandwidth units in the same policy map must be identical. Try the following config:

policy-map NE4-qos_01

! VoIP

class VoIP

--> priority percent 10

class netzwerk

bandwidth percent 10

class dialog

bandwidth percent 20

class batch

bandwidth percent 25

class class-default

fair-queue

random-detect

and see if that makes a difference...

Regards,

GNT

[entireerfurt]

thanks a lot.

I Must set on the Interface the Bandwith command higher then the Interface Speed if i want to have more BW available to take over the service-policy. I did?nt understand the relation of all BW in policy-map to the BW and Speed of the Interface.

Have somebody an Explanation for me?

regards

Ronny

[theclam]

I believe by default you are only allowed to reserve up to 75% of the interface bandwidth. The router reserves 25% for routing protocols, etc.

You can set this differently using the max-reserved-bandwidth interface config command.

Foeh

[m-haddad · Accepted solution]

As listed before you can't use 100% of the bandwidth on an interface. THis is because the router reserves bandwidth for other stuff like dynamic routing. Therefore, what you have to do is issue the command max-reserved-bandwidth on the interface to allow QoS to use the maximum bandwidth.

Regards,