QOS atm

From: Richard Dumoulin (richard.dumoulin@vanco.es)
Date: Fri Apr 16 2004 - 13:49:24 GMT-3


Hello all,

  I thought I knew how to apply a "service-policy input" command in an atm
interface. I would just type pvc x/yy and then put the command there. But
today I did a mock lab where pppoatm had to be configured. So:

interface ATM0/0/0.201 point-to-point
 pvc 0/201
  encapsulation aal5snap
  protocol ppp Virtual-Template1

But then a later task was to rate-limiting incoming icmp packets. So:

policy-map ICMP
  class ICMP
   police cir 256000
     conform-action transmit
     exceed-action drop
     violate-action drop

Here I could see three interfaces where the service-policy command could be
applied: the atm interface, the atm subinterface, the pvc x/yy inside the
subinterface and the Virtual-Template interface. Where exactly should it be
applied ? Any reason ?

On the pvc x/yy there were no options.
On the atm subint. the virtual-access interface would go done once the
service command was applied.
So I applied it on the atm interface, I quickly did some tests and I could
not see any match. But I was in a hurry so I passed onto the next question.

Could anyone confirm that generally the policy is applied to pvc x/yy but
that this is a particular case ?

Thank you for reading,

--Richard



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