2005-05-23 10:26:03 +02:00
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UCARP allows a pair of hosts to share common virtual IP addresses in order to
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provide automatic failover. It is a portable userland implementation of the
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secure and patent-free Common Address Redundancy Protocol (CARP, OpenBSD's
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2004-07-08 12:30:31 +02:00
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alternative to the VRRP).
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2005-05-23 10:26:03 +02:00
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Strong points of the CARP protocol are : very low overhead, cryptographically
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signed messages, interoperability between different operating systems and no
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need for any dedicated extra network link between redundant hosts.
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