Link bundle co-routed VCAT via RSVP message bundling

Details Link bundle co-routed VCAT via RSVP message bundling Link bundle co-routed VCAT via RSVP message bundling

2011-05-24

2011-05-24

Pham, Chi H. (Department: 2471)

Multiplex communications

Data flow congestion prevention or control

Control of data admission to the network

C370S392000, C370S400000, C370S431000

Reexamination Certificate

active

07948885

ABSTRACT:
Multiple RSVP messages are used to separately signal components of co-routed VCAT to enable the separate components to be implemented on different physical fibers of a link bundle. To enable the PATH messages to be handled as a group, the multiple PATH messages are grouped together and sent out in a RSVP bundle message. When a RSVP bundle message containing multiple PATH messages is received at a network element, such as an ENNI, where the route for the PATH messages needs to be expanded, the route is expanded collectively rather than individually. Specifically, the route will first be expanded and this expanded route will be inserted into each individual PATH message. The modified PATH messages with the expanded route will then be passed through the RSVP finite state machine one at a time to enable resources to be reserved for the connections of the VCAT. Thus, a single LSP may be created for each channel, and the channels may be co-routed even where route expansion is required.

REFERENCES:
patent: 6563821 (2003-05-01), Hong et al.
patent: 2004/0114595 (2004-06-01), Doukai
patent: 2004/0165537 (2004-08-01), Lee et al.

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