Ticket Number: HEA-NOC/20070811-7 Ticket Status: CLOSE
Ticket Type: unscheduled Resolver: HEA-NOC
Ticket Opened: 20070811 15:56 UTC+1 Problem Start: 20070809 14:41 UTC+1
Ticket Closed: 20070925 17:51 UTC+1 Problem End: 20070904 17:24 UTC+1
Spanning tree loop guard is occasionally blocking the uplink on GDA's NBE
switch (to Bolton St.) for short periods of time, resulting in brief
20070811 15:36 CS Investigating.
20070812 15:36 CS boltonst-sw1 sends BPDUs every 2 seconds to gda-sw1.
When gda-sw1 does not receive a BPDU on time, the loop guard blocks the
interface until one is received. This may indicate a potential problem
with the fibre link, where BPDUs are being lost. gda-sw1 was recently
deployed to the site (9th).
20070812 18:17 CS Further block/unblocks at 17:29.
20070815 16:03 COC Two further 2 min outages occurred at 11:50 and 15:57.
20070818 11:43 RG Further blocks/unblocks occurred at 18:26 and 22:02
yesterday evening. With another block/unblock at 11:30 this morning.
20070823 10:25 BS ongoing blocks/unblocks are probably because of packet
loss due to the nature of wireless technology. Investigating.
20070830 15:55 CS Series of outages from 15:22 to 15:58.
20070905 17:20 CS Loop guard disabled by EK on 4th at 17:24.
20070925 17:47 CS Disabling loop guard "solved" this problem. Recent radio
link problems have been tracked in 20070924-3
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