Ticket Number: HEA-NOC/20090226-6 Ticket Status: CLOSE
Ticket Type: unscheduled Resolver: Airspeed
Ticket Opened: 20090226 15:15 UTC Problem Start: 20090226 14:43 UTC
Ticket Closed: 20090227 17:17 UTC Problem End: 20090226 17:25 UTC
Site/line: ASNG, GMIT, NUIG
Switching instability in Galway causing connectivity problems to Open
Learning Center, DERI, GMIT and Tippeary Inst. Other sites may be affected
and we will update the ticket accordingly.
Connectivity problems to
* GMIT Letterfrack
* GMIT Castlebar
* NUIG Mace Head Atmospheric Research Station
* NUIG Martin Ryan Institue, Carna
* NUIG Áras Shorcha Ní Ghuairim, Carna
* NUIG Áras Mháirtin Uí Chaidhin, Carraroe
* NUIG Sean Scoil Shailearna
20090226 15:00 JB - Opening ticket and investigating cause.
20090226 15:49 OB Airspeed report spanning-tree issues within their
network. Uplink between HEAnet - Airspeed has been quarantined until
20090226 17:27 TG Engineer has resolved the issue in Galway, HEAnet has
re-enabled the port facing the wirless links. Awaiting further detail on
the exact cause.
20090227 17:12 JB - A switch failure in Airspeed cause RSTP to be removed
and a switch loop to be formed, resulting in a severe broadcast storm. This
resulted in high CPU on switches on the Airspeed and HEAnet networks.
HEAnet have implemented stricter broadcast limits on the ports facing
Airspeed and Airspeed have resolved the RSTP issue. The network has been
stable since yesterday evening and the ticket can be closed.
Time to Fix:
This ticket can be monitored at http://www.hea.net/tickets/20090226-6
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