Beginning in Cisco IOS Release 12.2(33)SRE, the Cisco 7600 router enforces limits on the number of IP subscriber sessions per line card and router chassis. If the number of active sessions exceeds the following supported limits, an error message displays:
•Cisco 7600 chassis—48,000 subscriber sessions
•ES+ line card—4000 subscriber sessions per Traffic Manager; 16,000 sessions per line card
•SIP400 line card—8000 subscriber sessions (limit supported in Cisco IOS Release 12.2(33)SRD4)