Clarification on frame relay PtP on interface

From: Eric Phillips (eric@phillips.tc)
Date: Fri Jan 25 2008 - 12:47:50 ARST

Hi all,

I have a quick question. I have heard conflicting solutions when asked to
configure frame relay back to back between two routers. Traditionally I
would always enable frame relay switching on the router, put a standard
frame map on the interface, and make one side the FR DCE. However, I seem
to recall Scott Morris saying that enabling frame relay switching on a
router disables IP routing for that interface, or doesn't truly answer the
question. But that does not make sense to me because when I do that I am
able to run routing protocols on the frame interfaces, and they act just
like any other frame interfaces. So I am guessing I am either imagining I
heard that, misunderstood him, or am missing something fundamental about the
question. Additionally, I know you could also disable keepalives on the
interface, and that will make it come up without "frame relay switching"
enabled.

So my question is, how would you answer a "make this back to back link a
frame relay connection?" Would you enable frame relay switching, just
disable keepalives, and is there a difference between the two?

Thanks!

Eric 

-- 
Eric M. Phillips                               Senior Network Consultant

LTI Information Technology     http://www.ltiit.com
501 Avis Drive
Ann Arbor, MI  48108

Phone: (734) 929-1400   Fax: (734) 929-1401

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