From: Shanky (shankyz@gmail.com)
Date: Fri Jul 15 2005 - 07:38:31 GMT-3
Hi,
The DLCIs have to be the same on both sides ...coz u r configuring one
router as FR Switch ..so Essentially it is like
FR S/W --- DTE Router Config.
The DLCI as you know is the data link layer address between the FR Switch
and the DTE Router and is locally significant (Could be Global if u take LMI
extensions).
Now, if it were like R1---FR S/W----R2 ie 3 routers with one of them
serving as FR S/W, the DLCIs on the segments between R1--- FR S/w and R2---
FR S/w would have been different.
Hope it helps.
Shanky
On 7/15/05, jellyboy <jellyboy@gmail.com> wrote:
>
> Hi, I have a number of questions regarding Back-to-Back FR. Two
> routers R1 and R3 connected together with no FR switch in between.
>
> R3 config
>
> frame-relay switching
> !
>
> interface Serial0/1
> no ip address
> encapsulation frame-relay
> clockrate 56000
> frame-relay intf-type dce
> !
> interface Serial0/1.31 point-to-point
> des to r1 circuit
> ip address 172.16.31.2 <http://172.16.31.2>
255.255.255.252<http://255.255.255.252>
> frame-relay interface-dlci 31<<must be same on both sides
>
> R1 config
>
> interface Serial0/3.31 point-to-point
> des to r3 circuit
> ip address 172.16.31.1 <http://172.16.31.1>
255.255.255.252<http://255.255.255.252>
> frame-relay interface-dlci 31<<must be same on both sides
>
> Question- why do the dlci values have to be the same value on both sides?
> Question- does anyone know of any other configs that would achieve the
> same result?
>
> Just curious, as usual!
>
> Cheers,
>
>
> jellyboy
>
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