Hi all, IP reachability advertised by IS-IS is often used by other routing and signaling protocols (e.g., BGP, PIM (rpf vector) LDP, RSVP-TE...). As such, UPA may affect those protocols.
Has UPA been presented in other WGs in the routing areas? I believe this would be prudent if not required. In particular, BGP is (heavily) using reachability of (loopbacks) addresses advertised in IS-IS in order to evaluate the reachability of BGP routes and compute their preference. If UPA is not interpreted the same ways by all routers, forwarding loops may occur in a hop by hop routed network. (because different routers would select different paths since they use different information to select their path) This is not considered nor discussed in the draft. Quite the contrary, draft says that recognition, processing and use of UPA is a local consideration. I would suggest to at minimum present this draft to IDR and gets the feedback from the IDR WG. --Bruno ____________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. Thank you.
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