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The 2007/08 Service Description (SD) prescribes service performance over a period of twelve consecutive months. This report covers the twelve months ending April 2008.
Traffic data were reported for between 99.2% and 99.6% of all organisations each month.
Traffic data for three organisations were not reported for the quarter.
Data for two new organisations were reported this quarter, the Queen Elizabeth's Foundation Brain Injury Centre and Brighton & Hove Council Adult Community Learning. The connections to five sites were cancelled during this quarter.
Over the 12 months ending in April 2008 90.56% of connected organisations received 100% monthly availability. This is a reduction compared to the end of last quarter, when 91.95% of connected organisations had 100% monthly availability over the previous 12 months.
Organisations are intended to receive 99.7% availability over 12 months across the network; this was true for 91.3% of all sites at the end of April 2008.
All organisations 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. Over the 12 months ending in April 2008 on average 85.62% of outages were restored within 10 hours (89.01% at the end of the equivalent 12 months last academic year). There were over twice as many outages in this quarter than compared to the same period last year.
There were four widespread outages affecting the access paths between organisations and the JANET core network. The longest affected 133 sites in February 2008:
It lasted around 70 minutes and was due to poor router performance (the router was not configured to deal with a broadcast storm of SAP frames).
The second widespread outage affected 14 sites on LMN in February due to a faulty card at a BT Exchange.
There were two widespread outages in March 2008. The first affected all 99 sites on NNW for 19 minutes when the circuit on the primary Regional Network Entry Point (RNEP) flapped. The second outage affected 61 of those sites, for 16 minutes, and was caused by an incorrect default route in the routing table that had been introduced during the rectifying action to correct the first problem.
Reporting indicates that there were no incidents that isolated any part of the core network during this quarter. JANET(UK) reported that “The JANET core network has supported reliable JANET services well over the quarter despite a few fibre breaks and equipment failure. Traffic was able to re-route over other available paths during these problem periods.”
There were 176 maintenance periods affecting connections to client organisations during this quarter (323 last quarter and 110 in 2006/07 Q3). These were comprised of 148 scheduled maintenance periods (notification given at least two weeks in advance) and 28 emergency maintenance periods. There were 7 emergency maintenance periods carried out during working hours, 90% fewer than last quarter.
JANET access to European NRENs is via a 10Gbit/s connection to GÉANT from Telecity R-PoP with a 2.5Gbit/s backup connection from Telehouse R-PoP. Peak traffic over the connection is normally around 2Gbit/s; however, it peaked at 3.51Gbit/s during this quarter.
A plan to upgrade the backup link to 10Gbit/s has been drawn up. Both connections had 100% service availability over the past 12 consecutive months.
JANET access to the global Internet is via two global transit providers – TATA Communications (formally called VSNL) and TeliaSonera. Each company now provides four 10Gbit/s connection to two JANET PoPs at Telehouse and Telecity in London. Aggregated peak traffic approached 10Gbit/s at the end of the quarter. All eight connections were available throughout this quarter providing 100% availability over the past 12 consecutive months.
Connectivity to the UK public peering points was continuously available throughout this quarter.
All of JANET’s private peers were continuously available throughout this quarter. However, two links were reported to be unavailable:
Connectivity was maintained with HEANET as the outages did not coincide with each other.
A total of 458 fault reports were made during this quarter, all of which were responded to within one hour, as required by the SD. This is the first time this service level has been achieved for a full quarter since the equivalent quarter a year ago, 2006/07 Q3.
Seven new open mail relays were detected across JANET this quarter (2 in 2006/07 Q3). So far in 2007/08 28 open relays have been detected, which is already four times as many as in the whole of 2006/07. JANET CSIRT has noted this increase. During this quarter, 17 requests for delegations made under the Domain Name Service Administration took more than the target of five working days (SL). A “delay in response from Naming Committee” was responsible for 11 of these and “Administrator Error” accounted for six others.
A total of 2,802 enquiries were made to the JANET Service Desk during this quarter (1,993 in 2006/07 Q3). Over the 12 months ending in April 2008 96.7% of enquiries were resolved within 5 working days and 98.3% were resolved within 20 working days.
There were five requests for Lightpaths, all of which were delivered. This is the first quarter that JANET has reported on this service and its report covers data back to November 2007.
Lightpaths were not delivered to two organisations within the service level of 45 working days, taking 54 and 59 days. The first due to a delay in supplier circuit delivery and the second because of additional equipment needed to deliver the Lightpath.
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Last updated by JISC Monitoring Unit on Tuesday, July 8, 2008.
