From: Ludwig Morales (morales_l@xxxxxxxxxxx)
Date: Thu Feb 21 2002 - 18:19:04 GMT-3
Hi!
My perception is that it's better to use map statement on Multipoint
interfaces , also you can include Frame-relay interface-dlci command (which
is the option on point to point) if you want to use Traffic shaping for a
specific spoke on a multipoint (in order to assign a class to a specific
DLCI) but you would want to check the order in which you do this (if you
have map statements and input frame-relay dlci command you'll loose the maps
once the router is rebooted, read Caslow)
Anyway you'll need map statement on the spokes as well in order to reach
each other since Arp only resolves the address of the remote equipment
directly connected (ej, spoke 1 and 2 resolves hub address but not each
other) but once you map to one spoke from another spoke remember to map to
the hub too since you've just loose arp (remember arp is disable for the
specific protocol - dlci once you input a map statement for it)
So in my exam unless told otherwise I'll map my way to hell if necessary
Hope I've help a little or at least no confuse you more :)
Regards,
Ludwig
----- Original Message -----
From: "John Neiberger" <neiby@ureach.com>
To: <jim.phillipo@guardent.com>; <ccielab@groupstudy.com>
Sent: Thursday, February 21, 2002 1:58 PM
Subject: Re: Frame map vs intfc DLCI
> It's very interesting that you mention this today. I'd never,
> ever, seen anyone use the frame-relay interface-dlci command on
> multipoint interfaces until last night when another list member
> who shall remain nameless (Tim Ouellette) called me about this
> exact issue.
>
> We had a hub router configured with a multipoint subinterface
> using two frame-relay interface-dlci commands instead of frame
> maps. At first I thought this wouldn't work at all but it did,
> somewhat. The command reference says appears to say that it
> ought to work in conjunction with inverse ARP.
>
> However, it didn't seem to be stable and behaved erratically.
> When we removed those two statements and replaced them with two
> frame maps things settled down quite nicely.
>
> Specifically, we were having issues with EIGRP. It seemed to
> work, but the output of show ip eigrp neighbors indicated that
> things might not be working as they ought to be. Sorry, I
> don't have that info available here at work but if Tim reads
> this might be able to post the exact results.
>
> I've always been under the impression that we only used the
> frame-relay interface-dlci command on point-to-point
> subinterfaces so I've always used frame maps in all other cases.
>
> What do you all think about this issue? Is there a time to use
> one or the other on multipoint interfaces? Any gotchas we need
> to look out for?
>
> Thanks,
> John
>
>
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