sanity check frame question

Thu Aug 22 15:04:28 UTC 2002

> > I have a Frame connection between two sites, A and B. If the router
> > crashes at B, wouldn't A still see the DLCI for
> > B?  Is there any scenario where this wouldn't be the case?  If
> > B gets blown off the map, shouldnt A's frame interface be
> > in at least an up/down scenario?
> 
> In theory, when the remote LMI goes down, or any part of the PVC internal to the
> carrier goes down, the local LMI should go INACTIVE.  In practice, this is
> unreliable at best; for some carriers, you will always get ACTIVE status no
> matter what.

For a real frame relay (not the frame relay on customer end that terminates
into the ATM circuit on your end) if you want the interface to go up/down or
down/down when there is a problem on a line, you must configure frame relay
using sub-interfaces. Works like a charm.

Alex