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.
In UI, event with critical severity.
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; may or may not trigger a notification. In the NetQ UI, there are two types of events: Alarms which indicate a critical severity event, and Info which indicate warning, informational, and debugging severity events.
Network topology where a set of network nodes is interconnected through one or more network switches.
Node that has been heard from in the last 90 seconds.
Software used to provide a high percentage of uptime (running and available) for network devices.
Device that is connected to a TCP/IP network. May run one or more Virtual Machines.
Software which creates and runs Virtual Machines. Also called a Virtual Machine Monitor.
In UI, event with warning, informational, or debugging severity.
An Internet Protocol address is comprised of 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 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 available distribution packages.
UI term referring to a switch, host or chassis in a topology.
Item that informs a user of an event. In UI there are two types of notifications: Alert which is a notification sent by system to inform a user about an event; specifically received through a third-party application, and Message which is a notification sent by a user to share content with another user.
Link, or bonded links, used to connect two switches in an MLAG pair.
Node that has not been heard from in 90 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 connects that receives data packets from one device or node and redirects them to other devices or nodes on a network.
NetQ server which 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)
Emulation of a computer system that provides all of 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.
|ACL||Access Control Link|
|ARP||Address Resolution Protocol|
|ASN||Autonomous System Number|
|BGP/eBGP/iBGP||Border Gateway Protocol, External BGP, Internal BGP|
|CLAG||Cumulus multi-chassis Link Aggregation Group|
|DHCP||Dynamic Host Control Protocol|
|DNS||Domain Name Server|
|ECMP||Equal Cost Multi-Path routing|
|EVPN||Ethernet Virtual Private Network|
|FDB||Forwarding Data Base|
|GNU||GNU’s Not Linux|
|IGMP||Internet Group Management Protocol|
|IPv4/IPv6||Internet Protocol, version 4 or 6|
|LACP||Link Aggregation Control Protocol|
|LAN||Local Area Network|
|LLDP||Link Layer Data Protocol|
|MAC||Media Access Control|
|MIB||Management Information Base|
|MLAG||Multi-chassis Link Aggregation Group|
|MLD||Multicast Listener Discovery|
|NTP||Network Time Protocol|
|OOB||Out of Band (management)|
|OSPF||Open Shortest Path First|
|RFC||Remote Function Call|
|SNMP||Simple Network Management Protocol|
|SQL||Structured Query Language|
|STP||Spanning Tree Protocol|
|TCP||Transport Control Protocol|
|ToR||Top of Rack|
|UDP||User Datagram Protocol|
|URL||Universal Resource Locator|
|USB||Universal Serial Bus|
|VLAN||Virtual Local Area Network|
|VNI||Virtual Network Instance|
|VPN||Virtual Private Network|
|VRF||Virtual Routing and Forwarding|
|VRR||Virtual Router Redundancy|
|VTEP||VXLAN Tunnel EndPoint|
|VXLAN||Virtual Extensible Local Area Network|
|ZTP||Zero Touch Provisioning|