SWITCHlan Trouble Tickets

Transparency is very important to us. We therefore publish all trouble tickets about issues that have an impact on our customers. We show both currently open tickets as well as all closed tickets.

Ticket 20070530_3

Ticket Number: 20070530_3Ticket State: CLOSED
Ticket Opened: 2007-05-30 15:39Ticket Closed: 2007-05-30 17:32
Ticket Description: ARP storm at CIXP (CERN Internet Exchange Point)

Problem Description:

Excessive ARP (Address Resolution Protocol) traffic from a station at CERN Internet eXchange Protocol (CIXP) brought our router swiCE2.switch.ch to its knees.

Actions:


2007-05-30 16:27
All peerings up again, including the one with the peer that had sent the ARP storm. Apparently it was fixed.

2007-05-30 16:15
Re-enabled CIXP interface.

2007-05-30 15:55
CERN reports that a misbehaving station at another CIXP site (downtown Geneva) was disconnected.

2007-05-30 15:25
Shut down the Gigabit Ethernet interface towards CIXP in order to protect CPU resources on our router swiCE2.switch.ch.

2007-05-30 15:09
BGP connections to peers at CIXP started to go down.

For all questions about this ticket, please send mail to noc@switch.ch
or call +41 44 268 15 30.
SWITCHlan NOC