Trellis Introduction. Saurav Das, Charles Chan & Jono Hart. with contributions from many more. CORD Build 2017, San Jose January 14, 2018
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1 Trellis Introduction aurav Das, Charles Chan & Jono Hart with contributions from many more CORD uild 2017, an Jose January 14, 2018
2 Outline What is Trellis? Why Trellis? Trellis Roadmap
3 Open ource oftware Trellis ulti-purpose leaf-spine fabric designed for NFV White ox Hardware DN ased
4 Trellis ulti-purpose Leaf-pine Fabric Cluster Access & Trunk VLANs IPv4 & IPv6 & PL R IPv4 & IPv6 ulticast DHCP L3 relay (IPv4/v6) vrouter GPv4/v6(ext.) L2 bridged L3 routed IP multicast
5 Disaggregation are-metal + Open-ource pine witch White ox witch Accton x 40G ports downlink to leaf switches Leaf witch 8 x 40G ports uplink to different spine switches ECP across all uplink ports White ox witch Accton x 40G ports downlink to servers GE mgmt. GE mgmt. Leaf/pine witch oftware tack OCP oftware (ONL,ONIE) to controller OpenFlow 1.3 Indigo OF Agent OF-DPA RC AIC OCP are etal Hardware OCP: Open Compute Project ONL: Open Network Linux ONIE: Open Network Install Environment RC: roadcom erchant ilicon AICs OF-DPA: OpenFlow Datapath Abstraction
6 Why OF-DPA? Phy Por t Fabric AIC Pipeline * (RC s OF-DPA) Allows programming of all flow-tables & port-groups via OpenFlow 1.3 Ingress Port Table Vlan Table Vlan 1 Table Achieves Dataplane cale Termination AC Table PL L2 Port Table ulticast Routing Table Unicast Routing Table PL Table ridging Table OF 1.3 OF 1.0 ACL Policy Table L3 ECP Group L3 cast Group L2 Flood Group * implified view PL Label Group PL Label Group L2 Interface Group L2 Interface Group L2 Interface Group L2 Interface Group Phy Port Phy Port Phy Port Phy Port Phy Port Phy Port 6
7 Trellis Control Plane Redundancy = aster = ackup witches simultaneously connect to several controller instances. only 1 controller instance is master, several other instances are backups astership is decided by controllers witches have no say Controller instances simultaneously connect to several switches. Any controller instance can be master or backup for any switch Instance 1 Instance 2 Instance 3 Instance 4 Instance 5 preading mastership over controller instances contributes to scale
8 Trellis Control Plane Redundancy R = aster = ackup = Retry witches simultaneously connect to several controller instances. only 1 controller instance is master, several other instances are backups R R Losing controller instances redistributes switch mastership astership is decided by controllers witches have no say R R R witches continue to retry lost connections Controller instances simultaneously connect to several switches. Any controller instance can be master or backup for any switch Instance 1 Instance 2 Instance 3 Instance 4 Instance 5 anagement watchdog can reboot lost controller instances preading mastership over controller instances contributes to scale
9 Trellis Data Plane Redundancy pine witch pine witch Access Equipment ECP group Leaf witch Leaf witch Leaf witch Leaf witch ECP group
10 Trellis CORD Network Infrastructure Unified DN Control Of Underlay & Overlay Controller Cluster & Apps Datacenter Leaf-pine Fabric Underlay Virtual Network Overlay Trellis Provides Common control over underlay & overlay networks, including ervice Composition for Tenant Networks Distributed Virtual Routing Optimized Delivery of ulticast Traffic treams Trellis is the enabling Network Infrastructure for CORD
11 CORD Architecture XO Other Apps Other Apps Overlay Control Underlay Control vrouter White ox White ox White ox White ox White ox White ox White ox White ox White ox White ox White ox White ox White ox White ox White ox White ox etro Router Access Links R,E,- Access vg vg vg 3
12 Outline What is Trellis? Why Trellis? Trellis Roadmap
13 Why Trellis? Trellis is designed for ervice Providers & NFV
14 Trellis in CORD ervice Creation and Orchestration Control Plane s as DN apps AAA Control DHCP Relay CORD Controller (XO) volt Control Fabric Control vrouter Control DN Controller ( Cluster) NETCONF OpenFlow 1.3 ulti-vendor ONT/ONUs & RG XG-PON Whitebox OLT (EdgeCore) are-metal Open-source Leaf-pine Fabric pine pine pine aple aple QumranAX QumranAX ToR ToR ToR ToR ToR ToR ToR ToR Dataplane s in Edge Compute VOLTHA VOLTHA CDN vg CDN vg etro Routers 3rd Party ervice s
15 Why Trellis? Trellis is designed for ervice Providers & NFV DN allows simpler/easier/optimized features
16 vrouter in as oftware? a? anagement (CLI, NP, NetCONF) anagement (CLI, NP, NetCONF) ( anager) Control Plane (OPF, GP..) Dataplane Control Plane (OPF, GP..) Dataplane CP = vrouter V (vcpe, vng, vpgw, vra) Underlay Network DP DP DP CP DP vrouter V DP DP Issues: Hairpinning Issue: till hairpinning through a load-balancer Embedded control plane complicates scale-out 16
17 vrouter Trellis vrouter Operation Overlay Control Underlay Controller Control Cluster vrouter app Quagga (or other) Controller Cluster OPF I-GP V V Router Router External 17
18 vrouter Trellis vrouter Operation Overlay Control Underlay Controller Control Cluster vrouter Quagga (or other) Controller Cluster OPF I-GP V V Router Router External 18
19 vrouter Operation Trellis vrouter à Implemented as a big distributed router à Presents entire n/w infrastructure as a single router to outside world Overlay Control Underlay Controller Control Cluster vrouter Quagga (or other) Controller Cluster OPF I-GP V V Router Router External 19
20 Why Trellis? Trellis is designed for ervice Providers & NFV DN allows simpler/easier/optimized features DN + Programmable pipelines == New features
21 DN + Programmable Pipelines P4 OpenConfig control P4Runtime control configuration config gni 21
22 Why Trellis? Trellis is designed for ervice Providers & NFV DN allows simpler/easier/optimized features DN + Programmable pipelines == New features Open-source == P ownership & customizability
23 Outline What is Trellis? Why Trellis? Trellis Roadmap
24 Trellis Roadmap vs. Trellis-CORD Roadmap Trellis Features Used in CORD ridging & VLANs (Access/Trunk/Native) IPv4 Unicast & ulticast Routing vrouter GPv4 & tatic Routing Trellis Features To-e-Used in CORD Dual-Homing IPv6 DHCP L3 relay Pseudowires
25 Trellis Roadmap Upcoming 1.12 release (Dec 2017) Dual-homing (released ) fixes for known issues Pseudowire support Initial Qo support IPv6 additional features DHCPv6 relay additional features (contributed by Nokia) IPv6 ulticast (contributed by Nokia) IPv6 Router Advertisement app (contributed by Infosys) upport for New AICs & are-metal switches roadcom Qumran (QX) Cavium Xpliant Quanta switches (QCT LY8) arefoot Tofino using P4 (not in 1.12 release)
26 Roadmap ee here for complete roadmap
27 ummary What is Trellis? ulti-purpose leaf-spine fabric uilt with à bare-metal hardware + open-source software + DN Overlay + Underlay when used in CORD Why Trellis? Designed for P use cases & NFV DN allows simpler, easier & more-optimized features DN + P4 = new features in hardware Open-source gives P s ownership & full customizabilty Trellis Roadmap Different roadmaps for Trellis, and the use of Trellis in CORD
28 Thank you! and more
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