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Webcast-Catalyst9k
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isdn bri interfaces

If I had 2 isdn routers on different sites and wanted them to connect, do I need to put both BRI interfaces on the same subnet or does it not matter with isdn ?

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Re: isdn bri interfaces

Hi

AFAIK there are 2 ways one is considering the isdn connectvitiy as a seperate point to point link and assigining a seperate /30 block for that connectivity or else you can also use ip unnunmbered option and make use of your ethernet ip or the loopback ip.

But i would suggest to go with the first option coz of the simplicity involved, also the second option may create or result in some operational problems if you have some routing protocol in place between your locations.

regds

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