Brain,
Thanks a lot for your explain. It give me a big help. Best Regards Zongbiao Li ________________________________ ??????: FREEMAN, BRIAN D [bf1936 at att.com] ????????: 2017??4??25?? 21:34 ??????: Lizongbiao ????: onap-discuss at lists.onap.org ????: RE: Questions for SDN-C (removing onap-tsc to reduce the cross posting) Zongbiao, I think the answer to your question is it depends on the carrier network. The SDNC in ONAP is the same platform as the SDN global controller in the AT&T network. The Generic VNF DG??s and northbound API in ONAP is the basis for our generic VNF resource management in SDNG. We have other east/west adaptors that we did not open source since they are proprietary (like EIPAM for address assignments). We also have some non-standard southbound adaptors/plugins like an ssh adaptor for cli configuration of routers (VNF and PNF) and some wrappers on standard ODL southbound adaptors that weren??t pertinent in the VNF space (PCEP, BGP-LS for core MPLS-TE). All the standard ODL southbound feature bundles are available and can be installed in a SDNC simply by following the feature:install process for the feature bundle in the ODL documentation. Netconf, BGPCEP, SFC, OVSDB, Openflow are the examples. All of these would be available on the standard ODL northbound. DG nodes to call these functions from a directed graph is not available out of the box (except by restapicall node) and for some of those adapters we have DG nodes that we have not opensourced yet (netconf, bgpcep we use today). Some of these nodes we should have opensourced like netconf/netconf-lite since they will be needed for multiple use cases. We tend to operate separate SDNC instances by major use case (MPSL TE separated from access VNF config and separated by BGP Flowspec to a Route Reflector/vRoute Reflector). A carrier could also operate multiple SDNC??s for regional ??sharding?? of the work (federated SDNCs) with the service orchestrator calling the appropriate SDNC based on a homing algorthim. SDNC??s can also call each other via the restapicall node (see the tutorial on the wiki for SDNC calling APPC as a simplistic example of that). A carrier could also have a central SDNC that talks to all the devices via the above southbound adaptors but I would be concerned about the load ?C particularly the BGP listener based use cases since the load from the network can be rather high during BGP re-convergence for a large network. This might be a great conversation to have during a break on Tuesday of the F2F. A lot depends on the use case and size of the carrier. Does that help ? Brian From: onap-tsc-bounces at lists.onap.org [mailto:onap-tsc-boun...@lists.onap.org] On Behalf Of Lizongbiao Sent: Tuesday, April 25, 2017 3:11 AM To: onap-tsc at lists.onap.org Cc: onap-discuss at lists.onap.org Subject: [onap-tsc] Questions for SDN-C Hello SDN-C/ECOMP May I ask questions about SDN-C 1) will SDN-C be only global sdn controller which AT&T presented before, if that is true, how many driver do you have to connect how many kind of sdn controllers? 2) or does SDN-C intend to directly control all kinds of network devices on the all carrier network? thanks a lot for your explain Best regards, Zongbiao -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.onap.org/pipermail/onap-discuss/attachments/20170425/ef3f2c83/attachment.html>
