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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-spring.ietf.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Deterministic Networking Discussion List , "draft-ietf-spring-sr-redundancy-protection@ietf.org" X-Mailman-Version: 3.3.9rc6 Precedence: list Subject: =?utf-8?q?=5Bspring=5D_Few_more_comments_on_draft-ietf-spring-sr-redundancy-?= =?utf-8?q?protection?= List-Id: "Source Packet Routing in NetworkinG (SPRING)" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: --_000_VI1PR06MB639932F8003218F6C5C1DAB59E202VI1PR06MB6399eurp_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Dear all, Sharing few more comments related to draft-ietf-spring-sr-redundancy-protec= tion in SPRING but cc-ing DetNet because of the intersection of the redunda= ncy/PREF concept (that is, no ordering in this case). * It would be interesting to understand the potential impact on the MTU= due to the fact of activating the redundancy protection while traversing t= he network. This could be a limiting factor, or at least condition the appl= icability to the need of defining an MTU size in the domain for being able = to apply the solution. * In section 4.1, for End.R it is mentioned that "Encapsulates flow ide= ntification and sequence number in packets if the two information is not ca= rried in packets". But, how this is known? Adding some clarification could = help. * Sequence number size. I recall I raised this point during DetNet sess= ion in Madrid, and also commented in DetNet list (https://mailarchive.ietf.= org/arch/msg/detnet/KoMjM68ZGtZ6fAONnHdpRCIoNs8/). Assuming SRv6 as technol= ogy for WAN deployments, it could be certain cases where replicating traffi= c in two high-speed links (e.g., 100 Gbps or higher) with different lengths= in terms of hundreds of kms (for instance using different nation-wide link= s or submarine cables) could make this replication not working properly. As= suggested in such mail to DetNet, adding some clarification to that fact w= ould be necessary in my opinion (acknowledging that would not be the genera= l case, but yet operationally important in my view). I already proposed so= me text, but of course any other text would be ok. Best regards Luis ________________________________ Este mensaje y sus adjuntos se dirigen exclusivamente a su destinatario, pu= ede contener informaci?n privilegiada o confidencial y es para uso exclusiv= o de la persona o entidad de destino. Si no es usted. el destinatario indic= ado, queda notificado de que la lectura, utilizaci?n, divulgaci?n y/o copia= sin autorizaci?n puede estar prohibida en virtud de la legislaci?n vigente= . Si ha recibido este mensaje por error, le rogamos que nos lo comunique in= mediatamente por esta misma v?a y proceda a su destrucci?n. The information contained in this transmission is confidential and privileg= ed information intended only for the use of the individual or entity named = above. If the reader of this message is not the intended recipient, you are= hereby notified that any dissemination, distribution or copying of this co= mmunication is strictly prohibited. If you have received this transmission = in error, do not read it. Please immediately reply to the sender that you h= ave received this communication in error and then delete it. Esta mensagem e seus anexos se dirigem exclusivamente ao seu destinat?rio, = pode conter informa??o privilegiada ou confidencial e ? para uso exclusivo = da pessoa ou entidade de destino. Se n?o ? vossa senhoria o destinat?rio in= dicado, fica notificado de que a leitura, utiliza??o, divulga??o e/ou c?pia= sem autoriza??o pode estar proibida em virtude da legisla??o vigente. Se r= ecebeu esta mensagem por erro, rogamos-lhe que nos o comunique imediatament= e por esta mesma via e proceda a sua destrui??o --_000_VI1PR06MB639932F8003218F6C5C1DAB59E202VI1PR06MB6399eurp_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Dear all,

 

Sharing few more comments relat= ed to draft-ietf-spring-sr-redundancy-protection in SPRING but cc-ing DetNe= t because of the intersection of the redundancy/PREF concept (that is, no o= rdering in this case).

 

  • It would be interesting to understand the potent= ial impact on the MTU due to the fact of activating the redundancy protecti= on while traversing the network. This could be a limiting factor, or at least condition the applicability to the= need of defining an MTU size in the domain for being able to apply the sol= ution.
  • In section 4.1, for End.R= it is mentioned that “Encapsulates flow identification and sequence = number in packets if the two information is not carried in packets”. But, how this is known? Adding some clarification could help.
  • Sequence number size. I recall I raise= d this point during DetNet session in Madrid, and also commented in DetNet = list (https://mailarchive.ietf.org/arch/msg/detnet/KoMjM68ZGtZ6f= AONnHdpRCIoNs8/). Assuming SRv6 as technology for WAN deployments, it could be certain cases= where replicating traffic in two high-speed links (e.g., 100 Gbps or highe= r) with different lengths in terms of hundreds of kms (for instance using d= ifferent nation-wide links or submarine cables) could make this replication not working properly. As suggested in = such mail to DetNet, adding some clarification to that fact would be necess= ary in my opinion (acknowledging that would not be the general case, but ye= t operationally important in my view).  I already proposed some text, but of course any other text wo= uld be ok.

 

Best regards<= /p>

 

Luis



Este mensaje y sus adjuntos se dirigen exclusivamente a su destinatario, pu= ede contener información privilegiada o confidencial y es para uso e= xclusivo de la persona o entidad de destino. Si no es usted. el destinatari= o indicado, queda notificado de que la lectura, utilización, divulgación y/o copia sin autorizaci&o= acute;n puede estar prohibida en virtud de la legislación vigente. S= i ha recibido este mensaje por error, le rogamos que nos lo comunique inmed= iatamente por esta misma vía y proceda a su destrucción.

The information contained in this transmission is confidential and privileg= ed information intended only for the use of the individual or entity named = above. If the reader of this message is not the intended recipient, you are= hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If y= ou have received this transmission in error, do not read it. Please immedia= tely reply to the sender that you have received this communication in error= and then delete it.

Esta mensagem e seus anexos se dirigem exclusivamente ao seu destinat&aacut= e;rio, pode conter informação privilegiada ou confidencial e = é para uso exclusivo da pessoa ou entidade de destino. Se não= é vossa senhoria o destinatário indicado, fica notificado de= que a leitura, utilização, divulgação e/ou có= pia sem autorização pode estar proibida em virtude da legisla= ção vigente. Se recebeu esta mensagem por erro, rogamos-lhe q= ue nos o comunique imediatamente por esta mesma via e proceda a sua destrui= ção
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