first of all, make sure that all physical parameters (Framing, linecode, scrambling, ...) are correct on the 7200 ATM interfaces. What is the status of the ATM interfaces on the 7200 ? What is that 7200 connected to ?
It looks like you have an IMAM version mismatch. 7200 implements IMAM 1.1, but 3640 supports IMAM 1.0. So you need to call your provider and let them know you change to IMAM 1.0, they will probably need to restart the IMAM group in order to renegotiation take place between Router and switch (in some switches IMAM version should be change manually).
Unfortunately this is one part of the problem. In the old times when ATM Forum made the recommendation for IMAM development USA Vendors misinterpreted them. So there are 2 variants of IMAM 1.0 one apply by most of American Vendors and an other by Europeans. The differences are on how TX/RX Link IDs should be assign (you can read more about this at: Cisco Bug CSCdw74417). There are two possibilities to workaround this problem, some switches like Lucent SAX may be configure for any of the two variants. The other one is to connect port 1 of router with port 1 of switch, 2 with 2 and so on.
But in any case you need to call your provider and let them know, if you are unable to reach some one at your provider who understands about IMAM, just tell him to restart de IMAM group.
The need was to reach an host inside a LAN through a VPN connection managed by the LAN gateway (Cisco 1921).
The LAN gateway performs NAT and there was a dedicate nat rule for the host i wanted to reach through VPN.
I couldn't connect to the hos...
We have 3 identical switches configured by someone else and would like to claim some of the Gigabit ports(G1/G2/G3/G4) for use on servers. When we try to change the wiring and configuration, we run in to connectivity issues. Attached is a des...
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does