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Author PPP LCP question
netnode

2004-11-12, 5:14 pm

Hi!

This is another question which I do not fully understand (TK BCRAN A108):

What LCP does?

A. It negotiates the IP address
B. It negotiates the frequency of the link
C. It negotiates the error correction
D. It negotiates the modulo size

TK claims right for C, although I think the most right could be A, with a command "peer default IP address" or with a corresponding DHCP pool of adresses.

Thanks for any help!
The Reamer

2004-11-12, 8:24 pm

Link Control Protocol (LCP) is layer 2 protocol used to negotiate the connection on WAN links. This would include compression, and authentication. IP addressing happens with Network Control Protocol (NCP).

HTH,

The Reamer
darthfeces

2004-11-12, 10:53 pm

ppp itself is layer 2 , with the ability to interface with layer 3 ip, ipx or appletalk using ncp.

http://www.faqs.org/rfcs/rfc1661.html
netnode

2004-11-13, 12:03 am

Maybe you're right, guys! But then all of the alternatives are wrong, what comes to the original question.
darthfeces

2004-11-13, 12:23 pm

no it's c as stated
ppp is a layer 2 protocol with an interface to layer 3 (ncp)
ip address comes during ncp
netnode

2004-11-13, 1:50 pm

Please, tell me / show a link to which kind of error correction it can negotiate! I have never heard/read anything about this kind of capability.
netnode

2004-11-19, 3:16 pm

"ppp reliable-link"

To enable LAPB Numbered Mode negotiation for a reliable serial link, use the ppp reliable-link interface configuration command. To disable negotiation for a PPP reliable link on a specified interface, use the no form of the command.

ppp reliable-link
no ppp reliable-link

Is this the answer to alternative C?
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