Hello all: Yesterday one of our T1's went down. When this
happened I began to see some very odd behavior when running
traceroute or pings (troubleshooting). Our network is as
follows:

Main office: 10.1.0.0
Branch 1: 10.2.0.0 (T1 which went down)
Branch 2: 10.3.0.0
BM (internet): 10.1.1.19

Routing map on routers and servers is:

10.1.0.0 -> 10.1.1.1 (cisco router)
10.2.0.0 -> 10.1.1.1 (cisco router) ->(T1)-> 10.2.1.1 (cisco
router)
10.3.0.0 -> 10.1.1.1 (cisco router) ->(T1)-> 10.3.1.1 (cisco
router)
default -> 10.1.1.19 (BM39 server) ->(cisco
router)->(T1)->isp

Now when the T1 went down the I did a tracert I entered a
loop between the cisco router at 10.1.1.1 and the BM server
at 10.1.1.19. This would loop until the ttl counter
expired. Pings would die at 10.1.1.19 as well.

What I don't get is that if I ping an address across the bad
T1 I should never get to the BM server????? Since the
address matches a defined route, it should never hit the
default route rule?? Or does a failure automatically send
the packets down the default route???

Thanks for the help, Chris.