From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Sun Nov 14 2004 - 14:13:51 GMT-3
Andy,
Are you running PPP or no?
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
Of
> Andy
> Sent: Saturday, November 13, 2004 12:11 PM
> To: ccielab@groupstudy.com
> Subject: IE Solution Guide Page 15 "Pitfall" and ISDN Layer 3 to 2
> mappings on Multipoint interfaces
>
> Using the vconsole 4 port isdn simulator in a legacy configuration I
have
> come to the conclusion that both bri interfaces need to have either a
> dialer-map or dialer string statement for Layer 3 to Layer 2
> resolution.....
> If I do not say on R1 put a dialer-map statement pointing to R2 , and
ping
> from R1 to R2 the call comes up but Ping fails , as soon as dialer map
is
> put ont R2 to R1 ping works fine............. This looks like both
sides
> required layer 3 to layer 2 resolution..... Now on page 15 of IE
solution
> guide for Lab 1 it is infering to a "dynamic" method of layer 3 to
layer 2
> mapping ...... I interpret this as only one router needs to map to the
> other
> , as the one without the layer 3 to layer 2 resolution will
dynmaically
> learn it from the calling router once the call is successfull ???? How
do
> others interpret this ???
>
> -Andy
>
>
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