> > <<[…] If the explicit length of a TLV defined by the original protocol is > larger than its natural length, the extra space present in the TLV is > silently ignored by an implementation of the original protocol; > extended implementations MAY use it to store arbitrary data and > SHOULD structure the additional data as a sequence of sub-TLVs. […]>>
Hi everybody, I have the following problem. I would like that Babel-nodes running an implementation of the original protocol (call them standard-nodes) would be able to "forward information" contained in sub-TLVs coming from "extended-nodes". In other terms, instead of silently ignoring unknown sub-TLVs, I would like that standard nodes would be able to propagate (even without processing) information they do not understand, e.g. some special attributes of a source included in a sub-TLV attached to a router-id parent TLV. Is it possible to accomplish this kind of “silent-propagation”? For instance, I am thinking to this in order to deploy an extension without the need to reboot the whole network. Thank you and regards, Lorenzo Ghiro PS: In BGP it seems there is something similar, the so called Optional transitive Path Attributes (https://tools.ietf.org/html/ rfc4271#section-5)
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