Packet loss and DSL sessions blipping
MINOR Closed Broadband and Ethernet
STATUS
Closed
CREATED
Aug 26, 12:16 AM (8½ years ago)
AFFECTED
Broadband and Ethernet
STARTED
(0 seconds ago)
CLOSED
Aug 26, 11:30 PM (8½ years ago)
REFERENCE
2168 / AA2168
INFORMATION
  • INITIAL
    0 seconds ago by Andrew

    We've seen a couple of incidents this evening where customers have seen packet loss and some DSL sessions have blipped. It seems to have been caused by a traffic flood, and we're investigating the cause. This status is posted as Minor as things look OK at the moment.

  • UPDATE
    8½ years ago by Andrew

    We've had another set of blips affecting internet access for some customers this evening (20:15ish). We are looking in to the cause of this.

  • UPDATE
    8½ years ago by Andrew

    This is problem is continuing to cause disruption, please bear with us as we work to get to the bottom of this.

  • UPDATE
    8½ years ago by Andrew

    Traffic is has been normal for the past 30 mins or so, we've not yet tracked down the cause and are still looking on to this.

  • UPDATE
    8½ years ago by Andrew

    We believe we have found the cause of the network issues. More details to follow in the morning.

  • UPDATE
    8½ years ago by Andrew

    Unfortunately we are still having problems, we're still working on this.

  • UPDATE
    8½ years ago by Andrew

    We've done further work on this, traffic is back to normal at the moment and we are monitoring the situation.

  • RESOLUTION
    8½ years ago by Andrew

    The intermittent problems on the evenings of 25th and 26th were caused by a distributed denial of service attack against one of our customers. This type of attack does happen from time to time and we have systems which usually stop an attack in its tracks very quickly. However, in this case the attack was not automatically blocked. Due to the nature of the attack it did take longer than we would have liked to pin point the target of the attack, and this was eventually done at around 23:30 on the 26th. Moving on, we will be looking in to why this was not automatically blocked and how we can improve other systems with a view to prevent this from being a problem in the future. We do apologise for the inconvenience this caused.

  • Closed