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The 2007/08 Service Description (SD) was now monitors performance over any twelve consecutive months.
Traffic data were reported for between 99.6% and 99.7% of all organisations each month. Data for four organisations were not reported in one or more months of the quarter, mostly due to configuration errors.
Data for two new organisations were reported this quarter: Royal School for the Deaf and Communication Disorders and Calderdale Adult & Community Learning. The connections to six sites were cancelled during the quarter.
On average, 91.33% of connected organisations were 100% available each month in the 12 months ending in January 2008.
Organisations are intended to receive 99.7% availability over 12 months across the network; this was true for 92.2% of all sites for the 12 months ending January 2008.
Over the 12 consecutive months beginning in November 2007 an organisation would have to suffer an outage of 1,581.12 minutes or more if it were to miss the 99.7% target for the year. During this quarter 29 organisations have already missed the target for the coming year.
All outages should have a time to restoration of service of less than ten hours. Performance against this service level (SL) is calculated on a 12-month rolling average basis. There were nearly twice as many outages in this quarter than compared to the same quarter last year.
There were three widespread outages affecting the access paths between organisations and the JANET core network. The longest affected 25 of the 90 sites in the NOC management domain for 1,893 minutes due to a faulty card at the BT exchange at Telehouse.
The most widespread outage affected 29 sites on NNW who lost connectivity for eight minutes, in November, when a Telco mis-configured switch caused a circuit break. Another outage of 310 minutes affected another 14 sites on NNW.
Reporting under the core network indicates that there was an outage of 289 minutes affecting all sites connected to NorMAN. However, the outage was not reported for each affected organisation.
There were further instances of parts of the core network being unavailable, but due to its resilience none was service effecting.
There were 325 maintenance periods affecting connections to client organisations during the quarter (145 last quarter and 593 in 2006/07 Q2). These were comprised of 229 scheduled maintenance periods (notification given at least two weeks in advance) and 96 emergency maintenance periods. There were 80 emergency maintenance periods carried out during working hours (due to a JUNOS bug fix).
In its 2007/08 Q1 report the Monitoring Unit erroneously did not report an incidence of the annual scheduled maintenance cap on individual connections being exceeded for two FE colleges on NNW (Burton College, and Tamworth and Litchfield College). In addition to the 2,554 minutes previously reported, both experienced a further 106 minutes of scheduled maintenance in October, taking them over the limit of 2,635 minutes per year.
Access to the GÉANT network, connecting JANET to its counterparts in Europe and North America, is provided through a primary 10 Gb/s link and a 2.5 Gb/s backup link. JANET(UK) indicated that peak traffic reached 2.5 Gbit/s in November 2007.
Access to the Global Internet is provided through a total of eight 10 Gb/s links by TeliaSonera and VSNL, situated at Telehouse and Telecity, London. JANET(UK) reported that aggregated peak traffic has grown significantly and reached 8.2 Gbit/s at the end of January 2008.
Connectivity to the Global Internet, GÉANT and the UK public peering points was continuously available throughout the quarter.
Connectivity to ten of JANET’s private peers was continuously available throughout the quarter. There is one ongoing outage on the HEANET – Warrington link which started on 24th January 2008. It is due to a broken fibre under the Irish Sea which engineers were unable to fix due to bad weather in the area.
A total of 411 fault reports were made during the quarter, 99.3% of which received an initial response within one hour. This total does not include enquiries made to the NIRAN and YHMAN regional networks for December or for the ABMAN and CLYDENET networks for January 2008. Four reports (one in November, one in December and two in January) did not receive an initial response within one hour.
This quarter, six new open mail relays were detected across the whole of JANET (1 in 2006/07 Q2). So far in 2007/08 21 open relays have been detected, which is already twice as many as in the whole of 2006/07.
The Secondary Nameserver service was available continuously throughout November and January. In December, a failure of an amplifier at Verizon's premises in Edinburgh, meant that those users with only one secondary DNS source, may have lost service. The service level of 99.95 was met, however, as the break meant the availability for 12 consecutive months was 99.98%.
A total of 2,314 enquires were made to the JANET Service Desk during the quarter (1,738 in 2006/07 Q2). The JANET SD requires that 98% of enquiries shall be resolved within 20 working days. This service level was not met this quarter. Over the twelve months ending in January 2008, 97.7% of enquiries were resolved within 20 working days. However, 95% of enquiries were resolved within five working days (SL: 90% of enquiries).
There were 39 new or altered connections reported this quarter. Of these, 20 were delivered for customer acceptance in this quarter.
Nine connections were delivered outside of the SLD timeframe due to various reasons including supplier costs changing, site access problems and the target delivery date being missed.
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Last updated by JISC Monitoring Unit on Monday, April 7, 2008.
