cbwfq & route-cache cef

Answered Question
Nov 12th, 2009
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Hi Guys,


If we need to apply cbwfq on the router do we have to enable cef first.


I have cbwfq and cef enabled globally but there is a command on the wan interface of the router "no ip route-cache" will it have any impact on the qos enabled on the router.


Tks



Correct Answer by Jon Marshall about 7 years 5 months ago

Attached is a doc that lists all the Class based QOS features that require CEF, so if you intend to use any of the features in the list then yes you need to enable CEF -


http://www.cisco.com/en/US/tech/tk39/tk824/technologies_tech_note09186a0080094978.shtml#topic2


Jon

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Correct Answer
Jon Marshall Thu, 11/12/2009 - 15:33
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Attached is a doc that lists all the Class based QOS features that require CEF, so if you intend to use any of the features in the list then yes you need to enable CEF -


http://www.cisco.com/en/US/tech/tk39/tk824/technologies_tech_note09186a0080094978.shtml#topic2


Jon

Joseph W. Doherty Fri, 11/13/2009 - 04:54
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"If we need to apply cbwfq on the router do we have to enable cef first."


Answered by Jon's reference.


"I have cbwfq and cef enabled globally but there is a command on the wan interface of the router "no ip route-cache" will it have any impact on the qos enabled on the router. "


I believe with CEF, "ip route-cache" serves no effective purpose and whether it's enabled or not shouldn't impact QoS functioning. However, unsure whether activation or deactivation of it has any impact against router resources (i.e. CPU, memory).

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