What is UCARP FOR LINUX?

UCARP

UCARP is a super handy tool that helps two or more hosts share the same virtual IP address. This way, if one host has an issue, the other can jump in without a hitch—this is known as automatic failover.

What is UCARP?

The UCARP project is a user-friendly version of the Common Address Redundancy Protocol (CARP). It’s secure and doesn’t require any patents, making it a great alternative to VRRP, which has some complicated licensing issues.

Why Use CARP?

The CARP protocol has several strong points:

• It has very low overhead, meaning it doesn't use much bandwidth.


• Messages are cryptographically signed for added security.


• It works well across different operating systems.


• No need for extra dedicated network links between hosts!

How to Set Up UCARP?

If you’re ready to compile UCARP, here’s how:

1. cd into the directory with the source code and run ./configure. This configures the package for your system.


2. If you’re using an old version of System V, you might need to type: sh ./configure.


3. This step takes a little while. Just chill while it checks everything!


4. Next, type: make, which compiles everything.


5. You can also run tests by typing: make check.


6. If all goes well, install it with: make install.


7. If you want to clean up later, just type: make clean.

Your Requirements for UCARP

You’ll need:

• A shared virtual IP that will be answered by whichever host is alive.


• A real IP address for each host involved.


• A shared identifier for the virtual IP (a number between 1 and 255).


• An advertisement time base (default is 1 second) so hosts know when to check in with each other.


This tiny packet won’t impact your network at all!

How Download Works

Go to the Softpas website, press the 'Downloads' button, and pick the app you want to download and install—easy and fast!