Common Cumulus Linux and NetQ Terminology
The following table covers some basic terms used throughout the NetQ user documentation.
|NetQ software that resides on a host server that provides metrics about the host to the NetQ Telemetry Server for network health analysis.
|Device that connects two communication networks or network segments. Occurs at OSI Model Layer 2, Data Link Layer.
|Multistage circuit switching network used by the telecommunications industry, first formalized by Charles Clos in 1952.
|UI term referring to a switch, host, or chassis or combination of these. Typically used when describing hardware and components versus a software or network topology. See also Node.
|Change or occurrence in network or component that can trigger a notification. Events are categorized by severity: error, info, warning, and debug.
|Network topology where a set of network nodes interconnects through one or more network switches.
|Node that has been communicative for the last 120 seconds.
|Software used to provide a high percentage of uptime (running and available) for network devices.
|A device connected to a TCP/IP network. It can run one or more virtual machines.
|Software which creates and runs virtual machines. Also called a virtual machine monitor.
|An Internet Protocol address comprises a series of numbers assigned to a network device to uniquely identify it on a given network. Version 4 addresses are 32 bits and written in dotted decimal notation with 8-bit binary numbers separated by decimal points. Example: 10.10.10.255. Version 6 addresses are 128 bits and written in 16-bit hexadecimal numbers separated by colons. Example: 2018:3468:1B5F::6482:D673.
|An access layer switch in a Spine-Leaf or Clos topology. An Exit-Leaf is a switch that connects to services outside of the data center such as firewalls, load balancers, and internet routers. See also Spine, Clos, Top of Rack, and Access Switch.
|Set of free and open-source software operating systems built around the Linux kernel. Cumulus Linux is one of the available distribution packages.
|UI term referring to a switch, host, or chassis in a topology.
|Item that informs a user of an event. Notifications are received through third-party applications, such as email or Slack.
|Link, or bonded links, used to connect two switches in an MLAG pair.
|Node that has been silent for 120 seconds or more.
|Device that forwards data packets (directs traffic) from nodes on one communication network to nodes on another network. Occurs at the OSI Model Layer 3, Network Layer.
|Used to describe the role of a switch in a Spine-Leaf or Clos topology. See also Aggregation switch, End of Row switch, and distribution switch.
|High-speed device that receives data packets from one device or node and redirects them to other devices or nodes on a network.
|NetQ server that receives metrics and other data from NetQ agents on leaf and spine switches and hosts.
|Top of Rack
|Switch that connects to the network (versus internally); also known as a ToR switch.
|Emulation of a computer system that provides all the functions of a particular architecture.
|A network architecture designed to deliver capabilities of large cloud service providers within an enterprise IT environment.
|Generic, off-the-shelf, switch or router hardware used in Software Defined Networks (SDN).
Common Cumulus Linux and NetQ Acronyms
The following table covers some common acronyms used throughout the NetQ user documentation.
|Access Control Link
|Address Resolution Protocol
|Autonomous System Number
|Border Gateway Protocol, External BGP, Internal BGP
|Cumulus multi-chassis Link Aggregation Group
|Dynamic Host Control Protocol
|Domain Name Server
|Equal Cost Multi-Path routing
|Ethernet Virtual Private Network
|Forwarding Data Base
|“GNU’s Not Linux”
|Internet Group Management Protocol
|Internet Protocol, version 4 or 6
|Link Aggregation Control Protocol
|Local Area Network
|Link Layer Data Protocol
|Media Access Control
|Management Information Base
|Multi-chassis Link Aggregation Group
|Multicast Listener Discovery
|Network Time Protocol
|Out of Band (management)
|Open Shortest Path First
|Remote Function Call
|Simple Network Management Protocol
|Structured Query Language
|Spanning Tree Protocol
|Transport Control Protocol
|Top of Rack
|User Datagram Protocol
|Universal Resource Locator
|Universal Serial Bus
|Virtual Local Area Network
|Virtual Network Instance
|Virtual Private Network
|Virtual Routing and Forwarding
|Virtual Router Redundancy
|VXLAN Tunnel EndPoint
|Virtual Extensible Local Area Network
|Zero Touch Provisioning