I will expect replies to this message directly as it doesn't really fit into the normal fodder for nanog, but it is a last ditch effort for problem resolution. I have a customer who I am integrating into our network via a T1 link and have already gotten all the nominal routing setup prepared. This customer is using RFC1918 addressing on his LAN, and requires a firewall-type solution with NAT capabilities. Bless this customer for thinking ahead with his internal addressing :=) Anyway, I have run into a problem with his hardware/software provisioning and I think this can be recreated in a lab environment: Cisco 1601 router 6 MB Flash 4 MB DRAM WIC-1DSU-56K4 IP Plus/Firewall IOS version 11.3 (actual image name: c1600-nosy-mz.113-3.T ) Everytime I have start the router, I get a software crash that TAC says should not be happening. If anyone else might have this equipment setting around, and be willing to replicate this and see what happens for you, I would much appreciate hearing about it. I'm thinking I've found an ewps in the code/hardware configuration and have just provisioned a non-working solution. I'd like to hear what the rest of you might come up with. Yes, I know it's a small configuration, but surely we've all got lessor routers in the field with similar requirements. Thanks in advance if you would assist Kevin Brown