Using TCL to Directly Access Forwarding Databases

Please can someone tell me if this is even possible with a TCL script on IOS?
Open a TCP / SSL control channel from the router to an external monitoring server to do the following:
Reliably replicate the global routing table and VRF routing tables with all information, such as protocol, metrics, next hop, prefix, mask, VRF, etc.
Poll the global routing table and VRF routing tables for changes and send real time updates when there are changes
Encapsulate the information into XML so it can be decoded by the monitoring server
I don’t want to scrape show commands as I don’t believe it would scale or be accurate enough. I’m not even sure if it’s possible to direclty access the forwarding databases (MPLS, routing tables, etc)? Does TCL only work with CLI output?
Thanks!
Richard

Thanks for your help Joseph. Are there any plans to pass VRF information in the routing detector?
Are there any other detector subsystems or methods to directly monitor the routing processes? For example by using the Application Detector (event_register_appl) to subscribe to IOS subsystem events and bypass the built in detectors, or use Resource Detector (event_register_resource) to detect a state change? Even when writing custom TCL scripts are we bound by the predefined event detectors or are there other ways of accessing IOS subsystems?
I also wondered if it was possible to create an EEM / TCL resource tracker or counter tracker that tracks the routing tables for changes via SNMP. The problem here is I’m not sure if it’s possible to monitor the MIB for specific changes, then poll for that specific change, as opposed to doing a complete SNMP walk? For example, with a number of VRFs and hundreds of thousands of routes I just need to know when there has been a change, and report just that change.
I could take the output from the Routing Event then SNMP poll the global routing and all the VRFs for that prefix. With a lot of route updates and lots of VRFs there would be a lot of unnecessary SNMP polling (and it probably wouldn’t scale).
Regarding the SSL limitation it looks like it’s possible (from one of your previous posts) to perform an MD5 hash (maybe even SHA). Therefore I’d expect I can hash the XML payload in the TCP session.
Thanks again!

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