November 2006
Beginner
672 pages
15h 30m
English
Content preview from MPLS Fundamentals
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Distribution of TE Information
A link state routing protocol needs to flood the constraints of the links in the network to all routers that are running TE. In the next sections, you can see what link information the routing protocol needs to flood and how OSPF and IS-IS have been extended to carry this TE information.
Requirements for the IGP
The Interior Gateway Protocol (IGP) needs to be capable of sending all the topology information (the state of the links) to all routers in the area in which TE has been enabled. Only a link state protocol can perform this task because it floods the state of all links of a router to all the routers in one area. Therefore, every router in the area knows all alternative paths to get to the destination. A ...
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