Configure Process Switching

[holeman4110]

https://www.cisco.com/c/en/us/support/docs/ios-nx-os-software/ios-software-releases-120-mainline/47205-cef-whichpath.html

I found how to set Switching Method for CEF, Fast only on above doc.

For configure process Switching, should I set process switching for both inbound and outbound?

[balaji.bandi]

It all depends on what Platform you looking to use - below document guide you what is CEF :

https://ipwithease.com/cisco-express-forwarding-cef/

More information can be find below various platforms.

https://www.cisco.com/c/en/us/tech/ip/ip-switching/index.html

[Joseph W. Doherty]

Just curious, why do you want to configure process switching (as it's much slower, like 10x slower)?

[holeman4110]

I just wanna see how 3 kinds of switching work, since I've just started to study load balancing

[Joseph W. Doherty]

Ah.

Usually how packets are switched only differs in "speed".

However, I recall "true" process switching does packet by packet LB. CEF often offers that too as an option.

BTW, packet by packet LB is often also adverse to traffic too.

[MHM Cisco World]

as I know the process switching is default 
then can change default by config 
1- fast 
or 
2- CEF 

so process switching is by default there 

[holeman4110]

CEF is default(I did my lab on GNS3).

[MHM Cisco World]

if you disable CEF are the packet forward ?
Yes 
so there is default process switching  running in R
and for default CEF as I mention before there two Configurable process fast and CEF and CEF is default configurable in R

[MHM Cisco World]

[holeman4110]

hmm... It's werid.

CEF is default is on my side.

 Maybe we have difference versions of IOS?

[MHM Cisco World]

No,
CEF can enable in global mode and interface mode.

do 
no ip cef 
no ip route-cache 
under interface and check 

[MHM Cisco World]

please remove solution for my this answer and select the answer with cisco slide, to be clear to all read this post later 
thanks 
MHM

[holeman4110]

Yeap I did it and I really appreciate all of your replies

[balaji.bandi · Accepted solution]

if you are virtual,  there are bugs around with IP CEF and image you using

Try vIOS and test it.

[holeman4110]

Alright. I will try with that as well. Thx for your help!