ISDN problem solved but do not understand why :-(

Jun 20, 2005 3 Replies

I could not ping the local interface ISDN BRI. After doing some searching on Google and this group, the answer is to use the dialer map to map the local ip address to the remote one at the other end of the connection.



It "solves" the problem but technically, in my opinion, it does not : it just gives me the feeling that I can ping, but in fact, I ping the other side.



I would like to undertsand why I can not ping the local interface of ISDN BRI while I can on SE, Ethernet interfaces



Thanks,



DT



the reason is because is a non broadcast media, per se the traffic destined to the local interface is first sent to the other end of the link and the routed back (just as serial interfaces just that in this case the router doesn't know how to reach it like in frame relay needs more information). you need explicitly to let know the router where to reach such address.

the reason is because is a non broadcast media, per se the traffic destined to the local interface is first sent to the other end of the link and the routed back (just as serial interfaces just that in this case the router doesn't know how to reach it like in frame relay needs more information). you need explicitly to let know the router where to reach such address.

Anthrax, thanks for the explanation.

DT

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