In response to the current frame relay switching thread I setup a little experiment at home last night. I configured frame relay switching between a hub and two spoke routers, all three using Cisco encapsulation and LMI. Show frame pvc indicated that all circuits were active. Then on one of the spokes I changed the encapsulation to IETF and then reset the interface. To my surprise the circuit came back active and stayed that way. I thought for certain that it would go inactive but it did not. I then changed the LMI type on the same router to ANSI and the circuit died a quick death. So, it seems that the encapsulation type did not effect the circuit status. I guess to understand this more I need to find the frame formats for Cisco and ANSI frame relay. Perhaps they are slightly interoperable but one has different features than the other. Regardless, I didn't expect the circuit to stay up, but it did. If I later discover why this occurred I will post to the list. Regards, John Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=8406&t=8406 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]