Ticket Number: HEA-NOC/20080204-8      Ticket Status: UPDATE
Ticket Type:   scheduled               Resolver:      BT Ireland
Ticket Opened: 20080204 16:00 UTC      Problem Start: 20080209 23:59 UTC
Ticket Update: 20080208 20:00 UTC      Problem End:   20080210 08:00 UTC

Site/line:     IADT, NUIM, Géant STM-16 Secondary

Problem Description:
BT Ireland have informed us that they wish to replace 1 KM of fibre on the
link towards Maynooth and IADT.  This work is to make permanent the
temporary fix installed after the break in December.

Problem Effects:
BT Ireland Link to IADT will be down during the window (estimated recovery
time of 04:00).  This will mean a loss of General IP and Commodity
Internet service to IADT.

The BT Ireland link to NUIM will be down during the window (estimated
recovery time of 04:00).  All traffic will flip to the Eircom link to NUIM
with no noticeable outage.  Traffic will revert to the BT Ireland link when
the maintenance is complete.

Problem History:
20080204 15:55 BN Confirmed times and dates with NUIM.

20080205 10:05 BN Additional information has been given to HEAnet stating
that IADT will also be affected by this work.  Effects and other relevant
fields updated to reflect this change.

20080208 19:59 BN Geant have informed us that this work will also affect
our backup link and the HEAnet <-> CERN p2p circuit.

Time to Fix:
8 hours

This ticket can be monitored at

HEAnet Limited. Registered in Ireland, No. 275301.