This document introduces Cumulus Linux 2.5, which aims to make modern data center networking easier to adopt. Key features of Cumulus Linux 2.5 include validated design guides for virtualization, cloud orchestration, and big data use cases; support for both layer 2 and layer 3 network architectures; enhancements to MLAG, VRR, VLAN scaling, LACP bypass, and routing; and an expanded ecosystem of partners. Cumulus Linux 2.5 provides tools to simplify and accelerate the transition to modern data center networks through validated designs, flexibility in architecture choice, and an open approach.

1. v
Cumulus®
Linux®
2.5
Cumulus Networks®

2. Cumulus Linux 2.5
§ Making it easier for organizations of all sizes to
adopt modern data center networking
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3. Cumulus Linux Use Cases Expand
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Linux as a platform for….
Enterprise
Solutions
Network Virtualization
Overlays
High Capacity
IP networks
1.5
2.0
2.5

4. What’s new with Cumulus Linux 2.5?
§ Validated design guides for key IT Initiatives
• Simplify modern data center adoption for 3 key use cases
§ Choice of network architectures
• Simplify path to modern data center network architectures
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Virtualization OpenStack Big Data

5. Simplifying the Transition with Validated Designs
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§ Validated Designs:
§ Starting point for customer deployment
§ Designs tested in-house with configuration
files provided for reference
§ Detailed, step-by-step procedures and
guidance
§ Target Audience:
§ Data center architect or administrator who is
familiar with Linux and the use case
§ Results:
§ Accelerates Adoption
§ Lowers Risk associated with new deployment
VMware®
vSphere and Cumulus Networks®
Validated Solution Guide
Deploying VMware
®
vSphere with Cumulus
®
Linux
®
Switches
Big Data Hadoop and Cumulus Networks®
Validated Solution Guide
Deploying Apache Hadoop with Cumulus
®
Linux
®
Switches
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Available with Cumulus Linux 2.5

6. Cumulus Linux for Virtualized Server Environments using vSphere
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§ Enable SDDC across compute,
storage and network
§ Choice of industry standard
hardware
§ Rich Ecosystem with automation
tools and services
§ L2 architecture with MLAG
Virtualized Server
Applications and Ecosystem
Industry Standard
Server
Physical
Storage
Physical NIC
and Network
Industry Standard
Network Switch
vCPU vRAM Datastore
Virtual
Disk
vNIC vSwitch
vDS
Hardware Accelerated
IPv4/IPv6 Network
Routing and Switching
Compute Storage Networking
vSphere (Hypervisor) Linux Network OS
Virtual SAN
Vmware vSphere

7. Cumulus Linux for Cloud Orchestration using OpenStack
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Cloud Orchestration
Your Applications
OPENSTACK
CLOUD OPERATING SYSTEM
OpenStack Shared Services
Hardware Accelereated
IPv4/IPv6 Network
Routing and Switching
Industry Standard
Network Switch
Physical StorageIndustry Standard Server
APIs
OpenStack Dashboard
Compute Networking Storage
§ Open Source based solution on bare
metal hardware, nova-net plugin
§ Resource automation
§ OpenStack: Virtual resources
§ Linux tools: Physical resources
§ OpenStack Solutions
§ OpenStack distribution partners
§ Network overlay partners
§ Custom OpenStack solution
OpenStack

8. Cumulus Linux for Big Data Environments using Hadoop
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Spine
Leaf
L3 Fabric
Map
Reduce
Big Data
§ Big Data Hadoop Benefits
§ Affordable capacity based on bare metal
hardware
§ Scalable IP Clos Fabrics
§ Converged administration of server and
networking hardware
§ Rapid Deployment: Automation,
Operational consistency
§ Easy Customization
• Linux & PTM for locality optimization
Hadoop

9. Simplifying transition with CL 2.5: Choice of Network Architectures
IP Fabric
§ Simple IP Clos fabric
§ High capacity, scalable
networking
Spine
Leaf
L3 Fabric
Cumulus Linux 1.5 and 2.0: Layer 3 architectures
§ L2 active/active with MLAG
§ Drop in existing architecture
L2 Network
Aggregation
Access
L3
L2
Enabling Choice: Layer 2 and Layer 3 with Cumulus Linux 2.5
§ Flexible, virtual networking
§ Network overlay integration
IP Fabric with Network Overlays
Spine
Leaf
VNI Blue & Red
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10. CL2.5 New Features
§ Layer 2 Features
§ MLAG
§ VRR – Active/active first hop redundancy protocol
§ VLAN Scale
§ LACP Bypass
§ Routing Enhancements
§ Others: QoS Enhancements
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11. Cumulus Linux 2.5 – MLAG
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§ MLAG
§ Dual-Attached solutions for
capacity/redundancy
§ Simple migration path for existing
L2 solutions
§ Operational consistency with
scaled-out IP Fabrics
§ How?
§ Implemented via clagd &
associated commands
§ Bonding provides multi-pathing
§ Leverage existing LACP protocol
• LACP is easy to diagnose
auto peer-link.4000
iface peer-link.4000 inet static
address 169.254.0.1
netmask 255.255.255.252
clagd-peer-ip 169.254.0.2
clagd-sys-mac 44:38:39:ff:00:01
clagd-priority 8192
Aggregation
Access

12. Cumulus Linux 2.5 – VRR
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§ Virtual Router Redundancy:
§ Provides default gateway
redundancy (vIP)
§ Protocol-free redundancy
mechanism
• It is not VRRP, it is VRR!
§ Active-active FHRP
§ Enhancements in CL2.5
• Supports Router Redundancy
beyond host connectivity
• Integration with ifupdown2
L3
L2
10.0.0.10
Default GW: 10.0.0.1
VRR – 10.0.0.1 VRR – 10.0.0.1
10.0.0.11
Default GW: 10.0.0.1
auto bridge.100
iface bridge.100
address <ipaddr>
hwaddress <mac>
bridge-stp on
address-virtual <mac> <ip1>

13. Cumulus Linux 2.5 – VLAN Scale
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§ VLAN-aware Bridges
§ New 802.1Q Linux bridge
driver
§ Enables VLAN Scale
• VLAN-aware bridge scales to 2000
VLANs
§ Single instance spanning tree
• Supports STP, RSTP
§ Ifupdown2 Configuration
§ Migration path: mixed mode
support
• Recommended for migration only
Bridge
100
Bridge
VLAN-awarePer-VLAN
VLAN 100 VLAN 1-10,
100, 200
auto bridge
iface bridge
bridge-vlan-aware yes
bridge-ports glob swp1-52
bridge-stp on
bridge-vids 1-10 100 200
auto vlan100
iface vlan100
bridge-ports swp1.100 swp2.100
bridge-stp on

14. Cumulus Linux 2.5 – VLAN Scale (continued)
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§ Configuration Simplification
§ VLAN independent inclusion
of ports
§ Port specific configuration
now set on ports
auto swp1
iface swp1
bridge-access 100
mstpctl-portautoedge yes
mstpctl-bpduguard yes
Access port to VLAN 100
auto swp2
iface swp2
bridge-vids 10 100 200
mstpctl-portautoedge yes
mstpctl-bpduguard yes
Trunk with specific VLAN
IDs
auto bridge
iface bridge
bridge-vlan-aware yes
bridge-ports glob swp1-52
bridge-stp on
bridge-vids 1-10 100 200
VLAN-aware Bridge
auto swp49
iface swp49
mstpctl-portpathcost 10
Trunk all VLANS
(default)

15. Cumulus Linux 2.5 – LACP Bypass
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§ LACP fallback mechanism
§ Use Case: PXE boot for host
connected to switch via
LACP
§ Bypasses LACP protocol
negotiation
• LACP negotiation takes over
when LACP partner is detected
PXE Boot
Ifupdown2 BOND Configuration:
bond lacp-bypass-allow 1
bond lacp-bypass-period 120
bond lacp-bypass-priority 1
Ifupdown2 BOND Configuration:
bond lacp-bypass-allow 1
bond lacp-bypass-period 120
bond lacp-bypass-priority 2

16. Cumulus Linux 2.5 – Routing Enhancements
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§ Open Source Quagga
§ Contributions:
• Cumulus Networks is contributing all
enhancements to Quagga (includes major
updates for OSPF, BGP)
§ Large Community
• Vendors using Quagga include: Vyatta, Pluribus
Networks, Midokura, PLUMgrid, 6WIND
• Top Cloud providers and large hosting providers
have used it for many years
§ Cumulus Linux Routing & Automation:
§ Non-modal (iproute style) commands
§ Automation optimization (CL 2.5 Experimental)
• Apply configuration modifications only
§ CL2.5 Routing Enhancements
§ Scalability
• update-groups, large number of peers
§ BGP dynamic neighbors
§ Latest Quagga version
§ BGP add-path RX - Experimental
§ JSON support for some key commands –
Experimental
§ CL2.1 & 2.2 Routing Enhancements
§ Bidirectional Forwarding Detection (BFD)
§ Prescriptive Topology Manager (PTM) Integration
§ Route-map enhancements
§ OSPF Multi-instance support
§ Redistribute table support
§ Route tags

17. Unleash the Power of Open Networking in Your Data Center
§ Open Networking with Cumulus Linux
§ Empower selection of best of breed ecosystem
§ CapEx savings upfront, significant ongoing OpEx
savings
§ Cumulus Networks partners with you on your
journey to the Modern Data Center
§ Validated Design Guides
§ Training and Services
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18. Get Started!
Risk Free Trial
Remote Workbench
Regular webinars
Global Reach & Easy
Procurement
Step by Step
Validated Design
1 2 3 4
24/7 Support
5
Training & Consulting
Services
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Questions — sales@cumulusnetworks.com
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of Cumulus Networks, Inc. in the U.S. and other countries. You are not permitted to use the Marks without the prior written consent of Cumulus Networks. The registered trademark
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license from their respective owners.
§ Thank You!
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Unleashing the Power of Open Networking