Configuration Check-up for H-QoS on ES 20 in C7600

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Dec 9th, 2009
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We would like to apply the following configuration on the C7600 ES Card,

class-map match-all aaa-Voice

  match ip precedence 5

class-map match-all aaa-Gold

  match ip precedence 4

class-map match-all aaa-Silver

  match ip precedence 3

policy-map aaa-QUEUEING-1M

  class aaa-Gold

    bandwidth 160

  class aaa-Silver

    bandwidth 160

  class class-default

    random-detect aggregate

policy-map aaa-SHAPING-1M

  class aaa-Voice

    priority 380

  class class-default

    shape average 620000

    service-policy aaa-QUEUEING-1M

We placed the aaa-voice class to Parenets policy-map in the SHAPING-1M, because of delay,

If the aaa-voce is in the child aaa-QUEUEING-1m, There must be the delay due to Parenets Shaping priority

I applied the above configuration in the Cisco 3660 router, there was no problem to apply "service-policy output aaa-SHAPING-1M"

but the problem is that When I apply above the configuration on ES card in C7600, the error message was occured,

the error message is "

Child policy on class-default is not

supported with other classes on the parent level for main-interface " in the interface x/x/x

How Can I achive the main gole?

Our main gole is that the voice is the best effort to delivery the traffic and has no delay, but data don' t care in delay.

We must apply the configuration on ES 20 in 7600 Router.

Thanks in advance.

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Giuseppe Larosa Wed, 12/09/2009 - 02:05
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Hello Syjeon,

the error message informs that it is not possible to attach a child policy to class class-default.

In this case you should create a class where you put all IP traffic, be aware that order is important so that this class has to be invoked as last in the policy-map.

class mydefault

The idea is to deplete class class_default to overcome this limitation.

Hope to help



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