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Webcast-Catalyst9k
New Member

cbwfq & route-cache cef

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

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Blue

Re: cbwfq & route-cache cef

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

2 REPLIES
Hall of Fame Super Blue

Re: cbwfq & route-cache cef

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

Super Bronze

Re: cbwfq & route-cache cef

"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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