Computer networking is a complicated subject, with many interconnected layers and interactions. To help developers and engineers understand how the various networking components work together, several conceptual models have been developed.
Keepalived is one of the most commonly used applications that implements VRRP, a networking protocol that manages IP address assignment and ARP-based failover.
A computer network is a collection of computer systems that can communicate with each other. To communicate with a computer that’s on a different network, a system needs a way to connect to that other network.
Every Compute Instance is assigned several IP addresses, including a pubic IPv4 address and a public IPv6 SLAAC address.
Throughout 2022, Linode is rolling out networking infrastructure upgrades to all of our existing data centers.
NetworkManager is a very popular network configuration utility and is used by default on Fedora, CentOS Stream, CentOS, AlmaLinux 8, and Rocky Linux 8.
The systemd-networkd tool is a newer tool developed as part of systemd. Arch and modern versions of Ubuntu (17.
The ifupdown package is an older network configuration software that’s still used by Debian and older Ubuntu distributions (such as 16.
Many users might not understand the network protocols they are using, but networking is a critical topic for application programmers and architects.
In cloud computing, failover is the concept of rerouting traffic to a backup system should the original system become inaccessible.
Note Not all data centers support configuring IP failover over BGP. Review the Configuring Failover on a Compute Instance to learn more about IP Sharing / IP failover availability within each data center.
Note Not all data centers supports configuring IP failover through keepalived. Review the Configuring IP Failover on a Compute Instance to learn more about IP Sharing / IP failover availability within each data center.
Multi-queue NICs (network interface cards) are supported on all Linode Compute Instances that have 2 or more CPU cores (vCPUs).
Computers use DNS to determine the IP address associated with a domain name. Reverse DNS lookup does the opposite by resolving an IP address to a designated domain name.
OverviewNetwork Helper is an optional tool that makes network configuration easier on Linode Compute Instances. It automatically adjusts the appropriate internal network configuration files for your distribution during each system boot.
All Linodes are created with one IPv4 address and one for IPv6. An IPv4 address is assigned by our infrastructure from a pool of unused addresses when you create your Linode, and Stateless Address Autoconfiguration (SLAAC) is used for IPv6 assignment.
All Linodes are created with one IPv6 address, which is acquired by Stateless Address Autoconfiguration (SLAAC).
As IPv4 address exhaustion nears, many people are making the switch to IPv6. Linode offers native IPv6 addresses in all locations.
Bummer! The page you were looking for wasn't found. You can
browse our articles
or try searching.