From: G F Marsh (gfm@xxxxxxxxx)
Date: Sat Jan 06 2001 - 23:44:01 GMT-3
Suggest you read the Bruce Caslow book Bridges, Routers & Switches for
CCIE's, chapter 4 deals with frame relay and will answer your questions.
GFM
----- Original Message -----
From: <Ccieyet2b@aol.com>
To: <ccielab@groupstudy.com>
Sent: Saturday, January 06, 2001 4:51 PM
Subject: General Frame-relay issues and traffic shaping
> Hi Candidates,
>
> Recently, I took and failed the ccie lab (1st attempt). I didn't get to
day
> 2 because I couldn't get the frame relay connectivity working. Since the
> exam, I've been reviewing and deepening my understanding of frame relay,
and
> have been following all the frame relay related emails on this site.
During
> my review I have come up with a few questions/issues on this matter I
present
> here for your consideration.
>
> 1) If using subinterfaces, is the command, "no ip address" on the
physical
> interface required in all circumstances, some circumstances or just good
> practice? What problem(s) would there be if the command weren't used and
is
> there any "giveaway" clue that indicates this missing line is the problem
> rather than something else?
>
> 2) Regarding the command, "frame-relay traffic shaping", can this
command
> be used on either the physical or subinterface or just the physical
> interface? Also, does this command have to be used in conjunction with
> map-class statements to be useful? Or conversely, do map-class statements
> require that the "frame-relay traffic shaping" command be entered to have
any
> effect?
>
> 3) It seems that there are 2 ways of configuring traffic: using the
> "frame-relay traffic rate" statement or configuring a map-class and
> specifying each specific parameter. When is one way preferable to the
other?
> Do these 2 methods just constitute 2 different ways of achieving the
effect
> or are there circumstances that dictate the use of one method over the
other?
>
> 4) Regarding LMI type: Does the LMI type need to be same at each end of
the
> PVC or just between the router and the directly connected frame switch?
ie,
> like the DLCI, it's only locally significant?
>
> Thank you all in advance. Those of you who have been answering questions
on
> this site are a God send and are truly appreciated by myself and I'm sure
> many, many others.
>
> Jim
>
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