The MPLS WG Archive[Date Prev][Date Next][Thread Prev][Thread Next] [Date Index][Thread Index][Author Index][Subject Index] Unnumbered links in non-GMPLS scenario
szymanska_anna@poczta.onet.pl wrote: > > Does it mean that the upstream node does not have to know > IF_ID assigned to the interface by the downstream node ? > The upstream node seams not to use the IF_ID assigned by > the dowstream node. If traffic engineering is to be used, then the upstream node definitely needs to know the downstream interface's IF_ID. The unnumbered interface ERO subobject (defined in the rsvp-unnum draft) uses this IF_ID to identify a particular unnumbered link when there are multiple links between two routers. Right now, the only mechanism where the upstream node can learn this ID is via the GMPLS extensions to OSPF and ISIS, which is unfortunate, because it ends up tying the unnumbered interface draft to GMPLS, even though no GMPLS features are implemented by the draft. -- David
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