SWITCHlan Trouble Tickets

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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.