I also tried to pass some parameters using IAS and other radius servers. I try to pass:
ipsec:save-password=1
Only: Framed-IP-Address=x.x.x.x attribute was successfully processed and enforced.
It seams that Cisco changed avpairs a bit...
Some issues with radius are reported as bugs to TAC and Cisco's suggested to contact TAC to solve these problems....
Logs don't tell much why this aren't working:
....
Radius: Type = 26 (0x1A) Vendor-Specific
Radius: Length = 29 (0x1D)
Radius: Vendor ID = 9 (0x00000009)
Radius: Type = 1 (0x01) Cisco-AV-pair
Radius: Length = 23 (0x17)
Radius: Value (String) =
69 70 73 65 63 3a 73 61 76 65 2d 70 61 73 73 77 | ipsec:save-passw
6f 72 64 3d 31 | ord=1
rad_procpkt: ACCEPT
RADIUS_ACCESS_ACCEPT: normal termination