Home > Problems > Router Flapping

Problem: Route Flapping

Routers can occasionally enter a state in which they periodically switch route, typically every few minutes. This results in the delay alternately increasing and reducing.

Impact

As this usually occurs at a fairly low frequency (say every 30 seconds) then the impact on VoIP call quality is small, generally appearing as an occasional 'tick'.

Resolution

Use traceroute to determine where the problem is occurring. Resolution may require reconfiguration of routers.

Tools:

Traceroute

Back To Top

Conditions of use: The material on this site is copyright VoIP Troubleshooter LLC and may be freely used but not copied or downloaded.  In making use of this site the user acknowledges that VoIP Troubleshooter LLC or Contributor has no liability for any issues or problems that may arise directly or indirectly as a result of such use.  VoIP Troubleshooter LLC and Contributor are providing this material as-is with no warranty as to correctness or completeness and do not accept any responsibility for any issues or problems of any nature whatsoever that may arise from the use of the material on this site.