Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2011-08-09
2011-08-09
Ton, Dang T (Department: 2475)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S241000, C370S248000, C370S250000, C370S397000, C709S224000
Reexamination Certificate
active
07995574
ABSTRACT:
Methods and apparatus for enabling a provider to perform a tracing procedure to determine the existence forwarding problems within its network are disclosed. According to one aspect of the present invention, a method for detecting a forwarding problem within an autonomous system includes initiating a message from a source node. The message is sent to a message destination that is an external address relative to the autonomous system. The method also includes forwarding the message from the source node along a path to the external address which includes an intermediate node and a destination node. The message is received on the destination node through a first path segment of the path. Finally, the message is removed from the path at the destination node, and a response that indicates that the intermediate node does not have a forwarding problem is sent along the first path segment to the source node.
REFERENCES:
patent: 6148000 (2000-11-01), Feldman et al.
patent: 6335927 (2002-01-01), Elliott et al.
patent: 6452906 (2002-09-01), Afferton et al.
patent: 6584093 (2003-06-01), Salama et al.
patent: 6611872 (2003-08-01), McCanne
patent: 6647428 (2003-11-01), Bannai et al.
patent: 7058706 (2006-06-01), Iyer et al.
patent: 7284147 (2007-10-01), Rao et al.
patent: 7305466 (2007-12-01), Kaffine et al.
patent: 2001/0044842 (2001-11-01), Kawakami
patent: 2002/0150041 (2002-10-01), Reinshmidt et al.
patent: 2003/0023701 (2003-01-01), Norman et al.
patent: 2003/0142643 (2003-07-01), Yang et al.
patent: 2003/0145105 (2003-07-01), Desineni et al.
patent: 2003/0204619 (2003-10-01), Bays
patent: 2004/0218542 (2004-11-01), Lee
patent: 2005/0054346 (2005-03-01), Windham et al.
patent: 2005/0068968 (2005-03-01), Ovadia et al.
patent: 2005/0099951 (2005-05-01), Mohan et al.
patent: 2009/0086645 (2009-04-01), Hedayat et al.
Cisco Technology Inc.
Kamara Mohamed
Ton Dang T
LandOfFree
Detection of forwarding problems for external prefixes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Detection of forwarding problems for external prefixes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection of forwarding problems for external prefixes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2771560