есть cisco 2821
Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version 12.4(8), REL
EASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2006 by Cisco Systems, Inc.
Compiled Mon 15-May-06 14:54 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T11, RELEASE SOFTWARE (fc1)

cisco_vpn uptime is 24 minutes
System returned to ROM by power-on
System image file is "flash:c2800nm-spservicesk9-mz.124-8.bin"

Нужно поднять vpn сервер.. пробовал по примеру
http://www.cisco.com/en/US/products/sw/secursw/ps2308/produc...

не проходит команда
cisco_vpn(config)#crypto isakmp policy 3
                         ^
% Invalid input detected at '^' marker.

подскажите как быть?