IS-IS documentation, BSCI exam

[news2010a]

I am taking some free tests out of CCNP prep and I noticed that questions are focused on IS-IS.

I am studying using "Cisco Advanced Router Configuration" and I don't see much about IS-IS there.

Do I expect to see many questions on IS-IS in the CCNP BSCI exam, and if so, can you please point me to a free link which can give me good background on IS-IS ?

Thanks !

[pkhatri]

Here's a good set of links:

http://www.cisco.com/en/US/customer/tech/tk365/tk381/tsd_technology_support_sub-protocol_home.html

Paresh

[news2010a]

Thanks. You guys rule !