Electrical computers and digital processing systems: multicomput – Computer-to-computer data routing
Reexamination Certificate
2008-01-29
2008-01-29
Caldwell, Andrew (Department: 2142)
Electrical computers and digital processing systems: multicomput
Computer-to-computer data routing
Reexamination Certificate
active
07325069
ABSTRACT:
The present invention describes a method and apparatus to ensure bi-directional connectivity between neighbor network elements in distance-vector protocol (e.g., EIGRP). The method further defines the dampening of neighbors that cannot establish a bi-directional connectivity. When a router receives an unreliable packet from a neighbor, the router adds the neighbor in neighbor table by gradually developing the reliability of the neighbor. First, the router adds neighbor's address into a dampening table and a ‘neighbor pending’ table. The router establishes a reliable communication with the neighbor. If the router cannot establish the reliable communication with the neighbor, the router dampens the neighbor and removes neighbor's address from ‘neighbor pending’ table. When the router establishes a reliable communication with the neighbor, the router ‘promotes’ the neighbor to the neighbor table. The router does not ‘advertise’ neighbor in its neighbor table until the neighbor is ‘promoted’ to the neighbor table.
REFERENCES:
patent: 5805818 (1998-09-01), Perlman et al.
patent: 6414955 (2002-07-01), Clare et al.
patent: 6456599 (2002-09-01), Elliott
patent: 6856627 (2005-02-01), Saleh et al.
patent: 7031288 (2006-04-01), Ogier
patent: 2001/0040895 (2001-11-01), Templin
patent: 2002/0012320 (2002-01-01), Ogier et al.
patent: 2003/0095504 (2003-05-01), Ogier
Haas, Zygmunt J., “The Performance of Query Control Schemes for the Zone Routing Protocol”, Aug. 2001, IEEE/ACM Transactions on Networking, vol. 9, No. 4.
Gage Timothy M.
Savage Donnie V.
Yang Yi
Ailes Benjamin A
Caldwell Andrew
Campbell Stephenson LLP
Cisco Technology Inc.
LandOfFree
Method of establishing bi-directional connectivity of a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of establishing bi-directional connectivity of a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of establishing bi-directional connectivity of a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2789707