There are two similar configurations that we are trying to get running that include the Cisco router. DS3 4xT1 IMA DS3 Frame --------->BSTDX --------> CBX- --------------> SA 600 --------------------> Cisco 7204 -------------> Relay 9000 500 This is pretty close to a customer config that is having IMA problems. The IMA links are going in and out of service when Frame Relay traffic is being passed. To try and get the 7204 router up and passing data, I tried to get the following config running. Ethernet 4Xt1 IMA DS3 Ethernet SmartBits ------------> SA 1200 -----------------> Cisco 7204 ------------> SA 1200 ----------------->. SmartBits The problem I had with this config is that I configured Bridge Groups and tunnels thru the SA 1200 and I was told that the Cisco was looking for routed PDU's. I changed the config in the SA 1200's to routed interfaces and then the IP addresses required did not seem to be what the customer config would be using. Does anyone think that it might be IP scheme that is playing a havoc here. Do you have any Cisco documentation that might be better than what is on their web site? Please let me know. Rajeev __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=5459&t=5459 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]