DNS "bad" forwarders not timing out

  • 3445809
  • 05-Oct-2006
  • 27-Apr-2012

Environment


Novell DNS
Novell NetWare 6.5 Support Pack 5

Situation

Two fowarders are configured and one of the dns servers in the list is down. If the DNS server sends a request to the forwarder that is down it will wait 2 seconds before using the other forwarder.
For every DNS request that is made and we are not authoritative for we will send to the forwarders. If we send to the forwarder that is down we will timeout in 2 seconds causing slowness to resolve.

Resolution

An enhancement to DNS has been entered to mark the "bad" dns server as down and not make requests to it but periodically check to see if it has come back.

Status

Reported to Engineering

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