ip classless , This command allows the software to forward packets that are 
destined
for unrecognized subnets of directly connected networks. The packets
are forwarded to the best supernet route.

ip proxy-arp , Proxy ARP is the technique in which one host, usually a router, 
answers
         ARP requests intended for another machine. By "faking" its identity, 
the router
         accepts responsibility for routing packets to the "real" destination. 
Proxy ARP
         can help machines on a subnet reach remote subnets without the need to
         configure routing or a default gateway. 

network-clock-participate , To allow the ports on a specified network module or 
voice/WAN interface
card (VWIC) to use the network clock for timing, use the 
network-clock-participate command in global configuration mode. To restrict the 
device to use only its own clock signals, use the no form of this command.


> Date: Tue, 11 Nov 2008 07:57:46 -0500
> From: [EMAIL PROTECTED]
> To: [email protected]
> Subject: [c-nsp] not understand some command
> 
> Hi 
>    
>   I am in new cisco
>    
>   I don't understand the different between ip classless and ip classful
>    
>   and why don't need those commands
>    
>   no network-clock-participate slot 1 
> no network-clock-participate slot 2 
> no network-clock-participate wic 0 
> no network-clock-participate wic 1 
> no network-clock-participate wic 2 
> no network-clock-participate aim 0 
> no network-clock-participate aim 1
>    
>   and
>    
>   What is ip proxy-arp?
>   why don't need it?
>    
>   Thank  you
>    
>    
>    
> 
>        
> ---------------------------------
> Ask a question on any topic and get answers from real people. Go to Yahoo! 
> Answers.
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