Hi,
I am doing a study on DDR. On my router, I configured the bri0 interface, and
it works fine. The router can place a call to the other end and traffic
passes through
perfectly. (It means all the isdn interface and dialer configuration are
correct).
My problem is, once i placed the interface as a backup for another serial
interface
(frame relay ), the bri0 is placed in standby mode automatically and even
the layer 1
and layer 2 for the bri0 are administratively shutdown automatically. I
tried to shutdown
the primary frame relay interface and the backup bri0 never comes up.
I tried it on different routers with the same result.
Is this behavior normal or I missed something?
Thank you very much for advice.
Jim.
Attached is my configuration sample:
int s0
encapsulation frame-relay
ip address 10.1.1.1 255.255.255.0
backup delay 10 30
backup interface bri0
no shut
int bri0
encapsulation ppp
ip address 10.1.2.1 255.255.255.0
isdn switch-type basic-ni1
isdn spid1 12345678 1234
isdn spid2 23456789 2345
dialer-group 1
dialer map ip 10.1.2.2 broadcast 6789
no shut
..............
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