Yes, excuse me. 12 multiareas.

Milady,

The limit for the number of different areas you can have is 29.

Please refer to the following document for more information:

http://www.cisco.com/univercd/cc/td/doc/product/software/ios120/120newft/120t/120t5/ismarea.htm

Regards,

Thanks, Yes I just found another link too, where says the 2851 has a base of 8.

http://www.cisco.com/en/US/docs/ios/solutions_docs/telco_dcn/tlcsonet.html#wp1303453

I thank you for your time!

Milady,

This is not a hard limitation but rather a general recommendation for the given platforms. The only hard limitation 29 processes derived from the number of process data blocks (PDBs) available on the box.

12 areas should be no issues depending on how many routes you have in each area of course:

Enter configuration commands, one per line. End with CNTL/Z.

2851(config)#router isis un

2851(config-router)#net 49.0001.0001.0001.0001.00

2851(config-router)#router isis deux

2851(config-router)#net 49.0002.0001.0001.0001.00

2851(config-router)#router isis trois

2851(config-router)#net 49.0003.0001.0001.0001.00

2851(config-router)#router isis quatre

2851(config-router)#net 49.0004.0001.0001.0001.00

2851(config-router)#router isis cinq

2851(config-router)#net 49.0005.0001.0001.0001.00

2851(config-router)#router isis six

2851(config-router)#net 49.0006.0001.0001.0001.00

2851(config-router)#router isis sept

2851(config-router)#net 49.0007.0001.0001.0001.00

2851(config-router)#router isis huit

2851(config-router)#net 49.0008.0001.0001.0001.00

2851(config-router)#router isis neuf

2851(config-router)#net 49.0009.0001.0001.0001.00

2851(config-router)#router isis dix

2851(config-router)#net 49.0010.0001.0001.0001.00

2851(config-router)#router isis onze

2851(config-router)#net 49.0011.0001.0001.0001.00

2851(config-router)#router isis douze

2851(config-router)#net 49.0012.0001.0001.0001.00

2851(config-router)#

Regards,