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Frame-Relay multiple subnets mapped to a DLCI

Hi experts,

I have a basic question about FR mapping.

Consider the below example config.

interface Serial0

ip address 10.16.1.1 255.255.255.0

frame map ip 10.16.1.2 201 br

frame map ip 172.16.1.1 201 br

encapsulation frame-relay

There are two subnets mapped to a single DLCI 201. Assuming that this is on the central site router, is such a config capable of connecting two spokes to it over the same DLCI ? My idea is that, we would need two DLCIs, one for each spoke.

I feel the FR switch won't know which DLCIs to swap over to take the appropriate VC in order to reach the correct spoke.

Advices please ..

cheers

Arav

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Gold

Re: Frame-Relay multiple subnets mapped to a DLCI

Arav

It is certainly possible to map several subnets to a single DLCI. But a single DLCI connects to a single remote location. So it is not possible to have a single DLCI connect a central site to 2 different remote sites. To connect to 2 different remote sites you would need 2 DLCIs at the central site.

HTH

Rick

2 REPLIES
Hall of Fame Super Gold

Re: Frame-Relay multiple subnets mapped to a DLCI

Arav

It is certainly possible to map several subnets to a single DLCI. But a single DLCI connects to a single remote location. So it is not possible to have a single DLCI connect a central site to 2 different remote sites. To connect to 2 different remote sites you would need 2 DLCIs at the central site.

HTH

Rick

New Member

Re: Frame-Relay multiple subnets mapped to a DLCI

Rick,

This is exactly what I wanted to clarify.

Thank you

Arav

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