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UIS Network Service Charges

This page contains a summary of all UIS Networks service charges.  For an explanation and detailed information on the individual services please refer to the specific pages.

The prices listed here exclude VAT and are typically correct for University institutions.  For Colleges, Research Council and other affiliated external institutions, VAT will be applied to the charges where applicable.


  1. GBN Dark Fibre Optic Services
  2. CUDN Services
    1. Notes on CUDN Services
    2. UPS with the PoP switch
  3. Managed Network Services
  4. UPS Services
  5. Additional Services
  6. Consultancy Services
  7. Network Traffic Charges
  8. Contacts

GBN Leased Dark Fibre Services

The Granta Backbone Network provides dark fibre circuits between locations within its coverage area.



Recurrent (per year)

Fibre optic rental – for every 100m (or part thereof) of fibre POA £13.22

Fibre optic rental to West Cambridge Data Centre (any distance)

£1,152 £1,598

CUDN Services

The CUDN provides active network services (routing and switching), with connections to the University backbone network and internet.

Installation of New Service

Recurrent Service Charge (p.a.)

2018 PoP Replacement Project - Upgrade from 1G

1G PoP switch £11,164 £2,688 -
10G PoP switch – Option 1: Combination of 2x 10G SFP+ and 48 x 1G copper uplinks £16,434 £5,737 £5,270
10G PoP switch – Option 2: 10x 10G SFP+ uplinks £14,660 £5,484 £3,495
1G BGP connection with 2x 1G uplinks (no PoP) £7,655 £2,198 £0
10G BGP connection with 2x 10G uplinks (no PoP) £7,655 £3,386 £0
Additional routed VLAN via PoP N/A £74
MPLS VPN – per-site (VLAN or pair of eBGP peerings) N/A £74
Inter-site VLAN N/A £74

Notes on CUDN Network Connections

A CUDN network connection can be provided in one of two main ways:

  • Via a dedicated Point-of-Presence (PoP) network switch, installed at the customer premises and connected by dual (redundant, active-active) 1Gbps or 10Gbps uplinks to two separate CUDN routers.  It is owned and managed by UIS Networks and provides a number of customer-facing ports, to which they can connect their network equipment.  It provides a suitable connection for an institution's local network.  The service includes the provision of a single data VLAN with IP subnets as required, dedicated to the institutional network; VLANs for services such as the University Wireless Service and University Telephone Network will incur no additional charge.
  • Via a pair of BGP links, to two separate CUDN routers.  The two links provide eBGP peerings with the CUDN routers: the institution will need to run a local BGP router to carry the required networks.  The links from the CUDN routers can be delivered to a single location or two separate locations, to two separate institutional routers - the institution will likely need to rent GBN dark fibre circuits to interconnect them and their institutional network.

A CUDN network connection is required if the institution wishes to use other UIS services, such as University telephones or wireless services (eduroam, UniOfCam).

CUDN network connections are available at locations directly connected by the Granta Backbone Network. The installation charge assumes the PoP switch is located at the site's GBN uplink location point. If additional trunking and fibre cabling is required, this will be included under a separate installation charge.

UPS with the PoP switch

Note that, as of academic year 2017-18, CUDN PoP switches no longer come with a UPS as standard.  Institutions wishing to retain the UPS on their PoP switch can do so, but note these will incur an additional charge — this is the 1000VA UPS with a single external battery (currently £275 /year).

The UIS has made these changes as a growing number of institutions no longer require a UPS either due to a local decision, or having a UPS of their own.  The PoP switch will, however, continue to be provided with dual power supplies.

Managed Network Services

The UIS can provide and manage institutional edge networks (for offices, labs and other locations) for institutions.



Recurrent (per year)

UIS-managed switch – 24 port £0* £450
UIS-managed switch – 48 port £0* £550
Institution-owned switch (up to 48 port) £0 £200
RPS (Redundant Power Supply) for single switch £1047 £150
RPS (Redundant Power Supply) support for second switch £399 £57

*Please note that large or new building projects have additional capital expenditure costs where significant network infrastructure is required. These are POA. Cost of hardware is not included in recurrent charge.

Managed Network Service switches can be provided with power protection using UPS equipment provided by the UPS Service.  In this case, it is recommended that the Redundant Power Supply service is used, in addition, to protect against a failure of the UPS itself.

UPS Services

The UIS can provide Uninterruptible Power Supply (UPS) units to protect the power on CUDN PoP or Managed Network Service switches.



Recurrent (per year)

UPS — 1000VA with one external battery £1,793 £275
UPS — 1000VA additional battery £518 £118
UPS — 2200VA with one external battery £2,262 £469
UPS — 2200VA additional battery £792 £239

The recurrent charge includes monitoring and replacement battery units every (approx.) 3 years.  In addition to a UPS, the UIS recommends a Redundant Power Supply on all switches where power protection is important.

Additional battery packs extend the runtime of the UPS.  The UIS will size the UPS, based on the power consumption of the attached devices — typically this will be to around 60% of the maximum load supported by the UPS, as runtime drops disproportionally, above this level.

Additional Services



Recurrent (per year)

Managed VPN £0 £300
Commercial ISP uplink £0 £1,200


Consultancy Services

UIS labour rate per hour2 UIS consultancy charges apply
UIS labour rate per day2 UIS consultancy charges apply


1. Normal expected cost – may be less or more in exceptional circumstances.

2. Applicable for on-site work not covered by other standard charges.

In addition to the recurrent charges above, a volume-related charge is made to recover the HEFCE-imposed JANET network charge.

Network Traffic Charges

Higher Education Institutions (HEIs) are charged for part of the cost of Janet by the Higher Education Funding Council for England and the other regional HE funding councils. Although, originally, the charge to HEIs was on the basis of their transatlantic traffic, the Joint Information Systems Committee (JISC) decided at its meeting on 28 March 2002 that a formula-based model reflecting institutional size, according to HESA annual statistics, should be used.

The University's Janet connection charge is recovered by quarterly charges based on all incoming traffic from and outgoing traffic to Janet for the previous quarter. The UIS invoices individual Colleges, Schools, and other institutions quarterly in arrears (usually early November, February, May, and August), except that any bill of less than £5 will be carried forward to the next quarter or the end of the financial year. The charge is based on the actual chargeable traffic attributed to the institution during that quarter, scaled so that the total across all institutions is the same as the amount invoiced by Janet(UK), allowing for VAT.

The traffic that is subject to charging is measured by the UIS at the router that connects to Janet.

  • Cambridge Janet traffic accounting data – recent is an index to web pages showing the breakdown of Janet traffic to/from the CUDN by institution, ordered by total traffic, on a daily, quarterly, and annual basis. The page also links to raw data files to enable institutions to perform their own data processing.
  • Individual web pages per institution giving traffic by individual local computer on a daily basis are available via Cambridge Janet traffic information by host to assist system administrators to manage their usage.


Enquiries and orders should be addressed to Network Support: telephone ext. 34691 or email to .

Network faults should be reported by phone only, to 0300 123 1164.

Scheduled interruptions will be announced on UIS's @UniCamITstatus Twitter feed and the UIS News Service.

Last updated: 5th January 2018


If you have any enquiries regarding UIS network services, or other University network topics, please send an email to: