HI Julien, your correction is…correct 😊
You’re referring to the protocols running on the DCN, or more appropriately on the MCN, right? The IGP is usually non TE and just providing reachability info…but as PCEP can be modified for other purposes, they can be modified as well. On this I agree with you. Cheers Daniele From: Julien Meuric [mailto:julien.meu...@orange.com] Sent: martedì 25 luglio 2017 11:36 To: Daniele Ceccarelli <daniele.ceccare...@ericsson.com>; pce@ietf.org Cc: Jonathan Hardwick <jonathan.hardw...@metaswitch.com>; pce-cha...@ietf.org Subject: Re: PCEP as an SDN controller protocol? Hi Daniele, [Operator hat on.] I agree on several things you wrote, starting from the answer to Jon's rhetorical question, which cares more about how much (at least I've never noticed my co-chair has a short memory). Nevertheless the sentence below needs to be corrected, because it happens to be wrong: "optical networks with no control plane" is as inaccurate as "a fuel car with no battery". Not relying on the high-end version of this mean to realize the core task of an equipment must not hide that most (even those Sonet/SDH ADMs) of the deployed optical devices do (mostly for management traffic, whose fate PCEP may share)...: - perform IP forwarding, - have a routing table, - run an IGP to populate that routing table, - run an IGP to advertise their attached addresses, - support a large set of (IP-based) protocols for various purposes (e.g., ICMP, DHCP, SSH, SMTP), i.e. squeezing many roles within a single protocol is a non-goal. A possible rephrasing could be "networks where the control plane is limited to background tasks", which reminds that operators deploy "fully packaged cars", not just "raw wheels with a motor" according to the misleading scope assumed in the current discussion. Thanks, Julien Jul. 24, 2017 - daniele.ceccare...@ericsson.com<mailto:daniele.ceccare...@ericsson.com>: · It could be the SBI solution for those networks where there is no control plane (e.g. many NMS driven optical networks)
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