VoIP Call Quality Problems
MAJOR Closed VoIP and SIMs
STATUS
Closed
AFFECTED
VoIP and SIMs
STARTED
Feb 27, 12:15 PM (5¼ years ago)
CLOSED
Feb 28, 02:11 PM (5¼ years ago)
REFERENCE
2095 / AA2095
INFORMATION
  • INITIAL
    5¼ years ago by Andrew

    We're investigating a problem with VoIP audio problems, calls breaking up etc. This looks to be some packetloss somewhere between us and our carriers. We'll update this post again shortly.

  • UPDATE
    5¼ years ago by Andrew

    We have identified the cause of this packetloss and are looking in to fixing it.

  • UPDATE
    5¼ years ago by Andrew

    We're working closely with a 3rd party that is involved in a BGP traffic problem between us and them. This is taking longer to get to the bottom of that we first thought.

  • UPDATE
    5¼ years ago by Andrew

    As we and the other BGP peer have not been able to get to the root cause of the problem we have put in a temporary fix. This has brought traffic levels back down to normal.

  • UPDATE
    5¼ years ago by Andrew

    Surprisingly, the problem has come back even though peering has been disabled! Needless to say, we are investigating again!

  • UPDATE
    5¼ years ago by Andrew

    The problem has gone away again whilst it was being looked in to.

  • UPDATE
    5¼ years ago by Andrew

    It's worth us explaining the problem... We have a peer at LINX that is sending us lots of traffic. This traffic is not for us, but for someone completely different - a different country even. Even through we have stopped the peering to this 3rd party, the traffic is still being sent, intermittently. This is causing our links to be filled, and hence causes packet loss.

    We have been in direct contact with the 3rd party all afternoon, and we and they are confused as to how this is happening. At the point in time, we suspect some kind of router memory corruption which is causing the router to send traffic to the wrong peer. This type of problem is difficult to prove, and so it is taking time to get to the bottom of it.

    We are still in contact with the 3rd party and will work to resolve this with them.

  • RESOLUTION
    5¼ years ago by Andrew

    We were able to stop the floods of traffic yesterday afternoon, as a temporary measure, but the underlying problem remained until 10am Saturday when the LINX facing card at the peer was reset after the issue was reported by other LINX members. It is a shame that this was not done yesterday. This does confirm that it was to just AAISP that was affected by this. We will be working on contingency plans to allow us to react more efficiently for something like this in future. Thank you all for your understanding.

  • Closed