Running 7206vxr hardware, currently running NSE-1 with 12.3 software, soon moving to G1 card with latest software.
Is there a maximum number of sub-interfaces that can be configured on an ATM interface? Currently running over 500 sub interfaces. Utilization wise, we haven't topped out the interface yet, but I wanted to make sure that we can continue on upwards to 1000+
With your platform and IOS you can use a maximum number of 20000 interfaces or subinterfaces.
Every interface uses an IDB. Therefore, the IDB limit indicates the maximum number of interfaces a router can handle.
The IDB limit is, therefore, the answer to the common question "How many (sub)interfaces can be configured on this platform?"