[c-nsp] FR and QoS

[Rodney Dunn]

> 
> Do you mean the config above, though, or this one:
> 
> >> interface (atm|frame) x/y.z
> >>  service-policy out shape-and-queue
> >>  (pvc|frame-relay interface-dlci)
> 
> Note the indentation - one's got the service policy attached to the
> interface-dlci, one's got it attached to the subinterface.

Sorry, I should have typed it in a router to get the order.

I tried it on a 75xx running some late 12.0S code and with
FR it will let me put the hierarchical policy on the subint
and not under the interface-dlci submode.

W2N-4.4-7513b#sh run int se 3/0/0/8:1.1
Building configuration...

Current configuration : 111 bytes
!
interface Serial3/0/0/8:1.1 point-to-point
 no ip directed-broadcast
 frame-relay interface-dlci 100   
end

W2N-4.4-7513b#confi t
Enter configuration commands, one per line.  End with CNTL/Z.
W2N-4.4-7513b(config)#interface Serial3/0/0/8:1.1 point-to-point
W2N-4.4-7513b(config-subif)# frame-relay interface-dlci 100   
W2N-4.4-7513b(config-fr-dlci)#service-policy out shape                  
W2N-4.4-7513b(config-subif)#do sh run int se 3/0/0/8:1.1
Building configuration...

Current configuration : 140 bytes
!
interface Serial3/0/0/8:1.1 point-to-point
 no ip directed-broadcast
 service-policy output shape
 frame-relay interface-dlci 100   
end

W2N-4.4-7513b(config-subif)#

Notice how it kicked me back to subif mode and applied the policy
there.


Then I tried ATM:

W2N-4.4-7513b(config-subif)#int atm 3/1/0.1
W2N-4.4-7513b(config-subif)#service-policy output shape
W2N-4.4-7513b(config-subif)#do sh run int atm 3/1/0.1
Building configuration...

Current configuration : 167 bytes
!
interface ATM3/1/0.1 point-to-point
 mtu 1500
 no ip directed-broadcast
 service-policy output shape
 no atm enable-ilmi-trap
 pvc 1/1 
  vbr-nrt 200 200 10
 !
end

W2N-4.4-7513b(config-subif)#interface ATM3/1/0.1 point-to-point
W2N-4.4-7513b(config-subif)#no  service-policy output shape
W2N-4.4-7513b(config-subif)# pvc 1/1 
W2N-4.4-7513b(config-if-atm-vc)#service-policy output shape
W2N-4.4-7513b(config-if-atm-vc)#do sh run int atm 3/1/0.1
Building configuration...

Current configuration : 165 bytes
!
interface ATM3/1/0.1 point-to-point
 mtu 1500
 no ip directed-broadcast
 no atm enable-ilmi-trap
 pvc 1/1 
  vbr-nrt 200 200 10
  service-policy out shape
 !
end

W2N-4.4-7513b(config-if-atm-vc)#

So with ATM it let me put it either under the subint or
under the PVC.

My guess is this would be because how do you handle it when
you have multiple PVC's under the same ATM subint with
different rates.  You would need the ability to apply
a policy per PVC in that configuration.

This was on a 75xx with dCEF on.

My policy was:

  Policy Map shape
    Class class-default
      Average Rate Traffic Shaping
      cir 8000 (bps) bc 32 (bits) be 32 (bits)
      service-policy llq
  Policy Map llq
    Class voice
      priority 2 (%)

Rodney


> 
> Or does it, in fact, not matter?
> 
> > The goal of MQC is to try and make it transparent
> > to the underlying hardware implementation.  It's
> > not perfect but it's much better than it was before.
> 
> *Totally* agree - don't get me wrong, MQC is great, and a huge improvement
> trying to hack together CAR, FRTS etc to get to where you want to be.  I've
> just been bitten by some rather annoying failure cases.
> 
> >> interface (atm|frame) x/y.z
> >>  service-policy out shape-and-queue
> >>  (pvc|frame-relay interface-dlci)
> >
> > I'm not sure what you mean here but if I'm reading
> > it right that's exactly how you should configure
> > it.  If it doesn't work it's a bug.
> 
> OK, thanks, if that syntax is now supposed to work pretty much everywhere,
> I'll look more at upgrades (and worst case TAC cases) when we hit the
> non-workers, rather than finding the work-arounds.
> 
> Regards,
> Tim.
> 
> --
> ____________   Tim Franklin                 e: tim at colt.net
> \C/\O/\L/\T/   Product Engineering Manager  w: www.colt.net
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