If you are trying for a setup for monitoring purpose(monitoring the T1 links) i would suggest to have a loopback ips routed via respective T1 so that when u ping that loopback ip you wont get the response if the respective T1 through its routed goes down.
You can also try to do a tracert and find out the path it takes to reach the destination ip or else you can ping the T1 address configured at the ISP end.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...