Extending sso for DHCP snooping to two box redundancy

Details Extending sso for DHCP snooping to two box redundancy Extending sso for DHCP snooping to two box redundancy

2011-03-08

2011-03-08

Kumar, Pankaj (Department: 2467)

Multiplex communications

Pathfinding or routing

Switching a message which includes an address header

C370S255000, C370S270000, C709S224000

Reexamination Certificate

active

07903647

ABSTRACT:
Disclosed are mechanisms for facilitating the use of DHCP (dynamic host configuration protocol) binding data. In general, certain applications include mechanisms for intercepting data being sent from a node and then determining whether the data corresponds to a valid IP address and MAC address binding. Embodiments of the present invention provide mechanisms for sharing such DHCP binding data between routers (or other type of network devices) in a redundancy group so that any of the routers may take over the data inspection to validate DHCP bindings. In particular aspects of the invention, the DHCP binding data is validated in procedures related to DHCP snooping, dynamic ARP (address resolution protocol) inspection, and the like.

REFERENCES:
patent: 6487605 (2002-11-01), Leung et al.
patent: 6751191 (2004-06-01), Kanekar et al.
patent: 7080151 (2006-07-01), Borella et al.
patent: 7379423 (2008-05-01), Caves et al.
patent: 2002/0080752 (2002-06-01), Johansson et al.
patent: 2005/0007951 (2005-01-01), Lapuh et al.
patent: 2005/0243837 (2005-11-01), Boyd et al.
patent: 2006/0036733 (2006-02-01), Fujimoto et al.
patent: 2006/0143440 (2006-06-01), Ponnapalli et al.
patent: 2006/0198296 (2006-09-01), Majee et al.
patent: 2006/0248229 (2006-11-01), Saunderson et al.
patent: 2007/0104146 (2007-05-01), Hossain et al.
“Route Processor Redundancy Paul (RPR+),” 2004, Cisco Systems, Inc., pp. 1-13.
Li, T. et al., “Cisco Hot Standby Router Protocol (HSRP),” RFC 2281, Mar. 1998, pp. 1-15.
International Search Report dated Sep. 25, 2007, received in corresponding PCT Application No. PCT/US06/45762 (3 pgs.).
Written Opinion dated Sep. 25, 2007, received in corresponding PCT Application No. PCT/US06/45762 (6 pgs.).

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