6. Multi-domain or multi-area management
One of the advantages of PCE is its ability to perform inter-domain or inter-area path calculations.
There are several possible architectures for addressing this issue.
6.1 Multi-domain/multi-area PCE
A single PCE can be used to manage several domains or areas. This PCE must therefore have a complete topological view of the domains/areas for which it is responsible.
The topological acquisition mechanisms seen previously can be used to give the PCE a global view.
In figure 18 , the PCE has a BGP-LS session to a device in domain 1, enabling it to retrieve the topology view of this...
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Multi-domain or multi-area management
State-managed PCE needed
Bibliography
- (1) - IETF – PCEP - Extension for Distribution of Link-State and TE Information. - https://datatracker.ietf.org/doc/draft-dhodylee-pce-pcep-ls/ (2018).
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