[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"skill:01M6HAKCE5WKB09KDAG26QG2D2":3,"skill-same:01M6HAKCE5WKB09KDAG26QG2D2":52},{"skillNo":4,"name":5,"nameZh":6,"description":7,"descriptionZh":6,"repositoryFullName":8,"ownerLogin":9,"ownerAvatarUrl":10,"ownerAccountNo":11,"ownerDisplayName":12,"repositoryNo":13,"starsCount":14,"licenseSpdxId":15,"licenseFileUrl":6,"sourceHtmlUrl":16,"categories":17,"keywords":18,"publishedAt":23,"linkOnly":24,"markdownContent":25,"markdownBody":26,"frontMatter":27,"refName":30,"commitSha":31,"skillDirectory":32,"forksCount":14,"repositoryHtmlUrl":33,"repositoryHomepageUrl":6,"ownerHtmlUrl":34,"ownerBlogUrl":35,"ownerDescription":36,"updatedAt":37,"install":38,"resources":51},"01M6HAKCE5WKB09KDAG26QG2D2","sdn",null,"Software-defined networking","NeuralBlitz\u002FMito","NeuralBlitz","https:\u002F\u002Favatars.githubusercontent.com\u002Fu\u002F79354388?v=4","01M6H8T2TFH477HRS0KTSTKR2E","David Riggs","01M6H8T2YQQDXPYM092P670Z21",0,"MIT","https:\u002F\u002Fgithub.com\u002FNeuralBlitz\u002FMito\u002Fblob\u002Fmain\u002F.opencode\u002Fskills\u002Fsdn\u002FSKILL.md",[],[5,19,20,21,22],"networking","network","opencode","software","2026-11-10 10:12:30",false,"---\nname: sdn\ndescription: Software-defined networking\nlicense: MIT\ncompatibility: opencode\nmetadata:\n  audience: network-engineers\n  category: networking\n---\n\n## What I do\n\n- Design and implement SDN architectures\n- Program network behavior through controllers\n- Separate control plane from data plane\n- Implement network virtualization\n- Create dynamic network policies\n- Manage network through software APIs\n- Deploy network automation with SDN\n\n## When to use me\n\nUse me when:\n- Building programmable network infrastructure\n- Implementing network virtualization\n- Managing data center networks\n- Creating dynamic network policies\n- Requiring network-wide visibility\n- Automating network operations at scale\n\n## Key Concepts\n\n### SDN Architecture\n```\n┌─────────────────────────────────────────────────────┐\n│                  Application Layer                   │\n│              (Network Apps & Orchestration)          │\n└─────────────────────┬───────────────────────────────┘\n                      │ Northbound API\n┌─────────────────────▼───────────────────────────────┐\n│               SDN Controller                          │\n│           (OpenDaylight, ONOS, Ryu)                  │\n│         - Network state                              │\n│         - Topology discovery                         │\n│         - Path computation                           │\n└─────────────────────┬───────────────────────────────┘\n                      │ Southbound API\n┌─────────────────────▼───────────────────────────────┐\n│                 Data Plane                            │\n│            (Switches, Routers)                        │\n│         - Forwarding                                 │\n│         - Flow tables                                 │\n└─────────────────────────────────────────────────────┘\n```\n\n### OpenFlow Protocol\nStandard southbound protocol for SDN:\n\n```python\n# Ryu SDN Controller example\nfrom ryu.controller import ofp_event\nfrom ryu.controller.handler import MAIN_DISPATCHER, set_ev_cls\nfrom ryu.lib.packet import packet, ethernet, ipv4\n\nclass SimpleSwitch(app_manager.RyuApp):\n    def __init__(self, *args, **kwargs):\n        super(SimpleSwitch, self).__init__(*args, **kwargs)\n        \n    @set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)\n    def packet_in_handler(self, ev):\n        msg = ev.msg\n        dp = msg.datapath\n        ofp = dp.ofproto_parser\n        \n        # Install flow rule\n        actions = [ofp.OFPActionOutput(ofp.OFPP_FLOOD)]\n        self.add_flow(dp, 1, actions)\n```\n\n### SDN Use Cases\n- **Data Center**: Network virtualization, tenant isolation\n- **WAN**: SD-WAN for branch connectivity\n- **Campus**: Centralized policy management\n- **Service Provider**: Network slicing\n\n### Controllers\n- **OpenDaylight**: Enterprise, feature-rich\n- **ONOS**: Carrier-grade, performance\n- **Ryu**: Python, lightweight\n- **ODL**: Vendor-neutral\n","## What I do\n\n- Design and implement SDN architectures\n- Program network behavior through controllers\n- Separate control plane from data plane\n- Implement network virtualization\n- Create dynamic network policies\n- Manage network through software APIs\n- Deploy network automation with SDN\n\n## When to use me\n\nUse me when:\n- Building programmable network infrastructure\n- Implementing network virtualization\n- Managing data center networks\n- Creating dynamic network policies\n- Requiring network-wide visibility\n- Automating network operations at scale\n\n## Key Concepts\n\n### SDN Architecture\n```\n┌─────────────────────────────────────────────────────┐\n│                  Application Layer                   │\n│              (Network Apps & Orchestration)          │\n└─────────────────────┬───────────────────────────────┘\n                      │ Northbound API\n┌─────────────────────▼───────────────────────────────┐\n│               SDN Controller                          │\n│           (OpenDaylight, ONOS, Ryu)                  │\n│         - Network state                              │\n│         - Topology discovery                         │\n│         - Path computation                           │\n└─────────────────────┬───────────────────────────────┘\n                      │ Southbound API\n┌─────────────────────▼───────────────────────────────┐\n│                 Data Plane                            │\n│            (Switches, Routers)                        │\n│         - Forwarding                                 │\n│         - Flow tables                                 │\n└─────────────────────────────────────────────────────┘\n```\n\n### OpenFlow Protocol\nStandard southbound protocol for SDN:\n\n```python\n# Ryu SDN Controller example\nfrom ryu.controller import ofp_event\nfrom ryu.controller.handler import MAIN_DISPATCHER, set_ev_cls\nfrom ryu.lib.packet import packet, ethernet, ipv4\n\nclass SimpleSwitch(app_manager.RyuApp):\n    def __init__(self, *args, **kwargs):\n        super(SimpleSwitch, self).__init__(*args, **kwargs)\n        \n    @set_ev_cls(ofp_event.EventOFPPacketIn, MAIN_DISPATCHER)\n    def packet_in_handler(self, ev):\n        msg = ev.msg\n        dp = msg.datapath\n        ofp = dp.ofproto_parser\n        \n        # Install flow rule\n        actions = [ofp.OFPActionOutput(ofp.OFPP_FLOOD)]\n        self.add_flow(dp, 1, actions)\n```\n\n### SDN Use Cases\n- **Data Center**: Network virtualization, tenant isolation\n- **WAN**: SD-WAN for branch connectivity\n- **Campus**: Centralized policy management\n- **Service Provider**: Network slicing\n\n### Controllers\n- **OpenDaylight**: Enterprise, feature-rich\n- **ONOS**: Carrier-grade, performance\n- 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