route authentication

[Barbara Fraser <byfraser () cisco com>]

I'm wondering just how many ISPs are using HMAC-MD5 to authenticate IS-IS 
route advertisements within their ASs,  or MD5 on BGP peering sessions? I 
don't need a real number, just a sense of the community. Is usage 
increasing? is it dead? is it regional? etc. Any anecdotal info you have is 
appreciated. I don't need names of ISPs, just whether or not these 
technologies are being used.

thanks,
Barbara
Barbara Fraser
Consulting Engineer
Cisco Systems, Inc.
Phone: +1 (408) 525-1735