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Community Member

cef

what is CEF? anyone can give useful links regarding CEF?

7 REPLIES
Cisco Employee

Re: cef

Hi Revilo,

See if this links helps you

http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/switch_c/xcprt2/xcdcef.htm

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/switch_c/xcprt2/index.htm

Have a look at them and please come back if you have any doubts on the same.

HTH

Ankur

*Pls rate all helpfull post

Community Member

Re: cef

thanks! do you know where I can get Cisco IOS for 3620 routers?

Community Member

Re: cef

Sure can:

Cisco's CEF techonology page:

http://www.cisco.com/en/US/tech/tk827/tk831/tk102/tsd_technology_support_sub-protocol_home.html

Circa IOS 12.0 CEF overview:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/12cgcr/switch_c/xcprt2/xccef.htm

In a nutshell: CEF is a method of building a Forwarding Table in RAM (and later, on individual cards which support it (distributed CEF)) for making forwarding decisions in the "fast" interrupt path, rather than writing packets into an input queue to be serviced the "traditional" process switched way by a seperate "IP Input" process.

It gets more complicated than that, but thats the general gist of things.

Please rate if this helped,

Adrian

Re: cef

hi,

Kindly check the attachment, and please don't hesitate for any further questions.

HTH, please do rate if it does help,

Mohammed Mahmoud.

Community Member

Re: cef

thanks! do you know where I can get Cisco IOS for 3620 routers

Re: cef

Hi,

You can go to the "Cisco Feature Navigator", and search by platform "3620":

http://tools.cisco.com/ITDIT/CFN/jsp/index.jsp

HTH, please do rate all helpful replies,

Mohammed Mahmoud.

Hall of Fame Super Gold

Re: cef

Oliver

You get IOS from Cisco web site. The link that Mohammed provides is a good way to get there. Or from the main home page you can login, and under the support tab there is a link for download software.

Note that to download software you must be a registered user on the Cisco site and your profile must have software download privileges (usually dependent on having equipment with a maintenance agreement with Cisco).

HTH

Rick

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