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| author | aapostoliuk <108394744+aapostoliuk@users.noreply.github.com> | 2025-04-29 16:35:29 +0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-04-29 14:35:29 +0100 |
| commit | 51a81fdbfd166248e2c13c4e121176895880d95e (patch) | |
| tree | 4f4ab93e2cc281866defbe6e96dbfb811dab0da4 | |
| parent | 527d9c0126748062c92a830bf4dbea3a7a94a37f (diff) | |
| download | vyos-documentation-51a81fdbfd166248e2c13c4e121176895880d95e.tar.gz vyos-documentation-51a81fdbfd166248e2c13c4e121176895880d95e.zip | |
failover: Added additional information about health checks (#1629)
Added additional information about health checks
| -rw-r--r-- | docs/configuration/protocols/failover.rst | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/docs/configuration/protocols/failover.rst b/docs/configuration/protocols/failover.rst index 8088e104..651fc5c3 100644 --- a/docs/configuration/protocols/failover.rst +++ b/docs/configuration/protocols/failover.rst @@ -3,7 +3,7 @@ Failover ######## Failover routes are manually configured routes, but they only install -to the routing table if the health-check target is alive. +to the routing table as kernel routes if the health-check target is alive. If the target is not alive the route is removed from the routing table until the target becomes available. @@ -28,7 +28,12 @@ Failover Routes .. cfgcmd:: set protocols failover route <subnet> next-hop <address> check type <protocol> - Defines protocols for checking ARP, ICMP, TCP + Defines protocols for checking ARP, ICMP, TCP. +* ICMP probe sends 2 ICMP request packets with a response timeout of 1 second. + If one ICMP response is received, the health check is successful. +* ARP probe sends 2 ARP requests with a response timeout of 1 second. + If one response is received, the health check is successful. +* TCP probe checks whether the destination port is open. Default is ``icmp``. |