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US 2003/0193944 A1Published application
Routing apparatus and routing method in network
AssigneeNone recorded
InventorYasushi Sasagawa
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AssigneeNone recorded
InventorYasushi Sasagawa
Estimating the term…
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A routing apparatus in a network supporting label switching among a plurality of repeating apparatuses, comprising a path setting unit for setting paths to be label switched in the network and a part exclusion specifying unit for specifying to the path setting unit one or more parts not to be passed through among the paths to be set. By this, the degree of freedom and flexibility of the routing can be raised.
A routing apparatus in a network supporting label switching among a plurality of repeating apparatuses, comprising:
A routing method for setting a path from an entrance repeating apparatus through at least one intermediate repeating apparatus to an exit repeating apparatus in a network supporting label switching among a plurality of repeating apparatuses, comprising:
Dependencies are inferred from the claim text.
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Routing or path finding of packets in data switching networks: using label swapping, e.g. multi-protocol label switch [MPLS]
Topology update or discovery: routing in connection-oriented networks, e.g. X.25 or ATM
Digital communication
Backward citations are indexed for grants only.
1. Field of the Invention
The present invention relates to a routing apparatus and a routing method in a network, more particularly relates to a constraint-based routing or explicit routing technique in an Intranet, Internet backbone, an optical network, transport network, etc. using multi protocol label switching and/or generalized multi protocol label switching (MPLS/GMPLS).
2. Description of the Related Art
The above object and features of the present invention will be more apparent from the following description of the preferred embodiments given with reference to the accompanying drawings, wherein:
FIG. 1 is a view of the basic configuration of a routing apparatus according to the present invention;
FIG. 2 is a flowchart of the basic steps of a routing method according to the present invention;
Preferred embodiments of the present invention will be described in detail below while referring to the attached figures.
FIG. 1 is a view of the basic configuration of a routing apparatus according to the present invention.
In the figure, reference numeral 10 indicates a routing apparatus in a network supporting label switching among a plurality of repeating apparatuses. The routing apparatus 10 is provided with at least a path setting means 11 and a part exclusion specifying means 12. Here, the path setting means 11 sets the path to be label switched in the network, while the part exclusion specifying means 12 specifies to the path setting means 11 one or more parts not to be passed through in the path to be set.