IT Services



Dynamic Host Configuration Protocol Service




Title of Service: Dynamic Host Configuration Protocol Service

Status of Document: This document describes services offered in June 2011.

Contents



1. Introduction

The purpose of the Dynamic Host Configuration Protocol (DHCP) service is that when a computer is attached to a particular network, it may enquire particular details of its environment, and be supplied with a temporary IP address from a special pool. This meets two needs: as portable computers roam between different networks their IP addresses need to change accordingly, preferably without the need for user intervention; as the number of hosts connected to the Internet continues to grow, there is developing a shortage of available IP addresses.



2. Summary of OUCS’s responsibilities

Hours of Service

2.1 The service operates at all times.

2.2 Operator cover is provided from 08:30 to 20:30 on weekdays. Periodic monitoring takes place outside these hours, and informal arrangements exist for staff to be called, but no funding is provided to make this contractual.

2.3 If a fault is notified between 09:00 and 17:00 on a working day, OUCS will commence investigation and correction within one hour (provided that no similar fault is also being handled by the same team).

2.4 If a fault is notified outside these hours, OUCS will use its best endeavours to attend the fault, but no funding is allocated to this purpose.

Serviceability Targets

2.5 It is intended, as far as is possible, to maintain service of all components at all times.

Resilience

2.6 The service is replicated on two servers. Client software allows for fail-over between servers.

2.7 The machines providing the service are distributed between the 129.67 and 163.1 networks.

Alternative Facilities

2.8 Departments and colleges can also supply their own dhcp services.

Hardware and Software Maintenance

2.9 The machines used are maintained under warranty by the supplier.

2.10 Software updates are applied by OUCS staff – this is done on a machine-by-machine basis, with no interruption to service.

System Development

2.11 There is no scheduled development time.

Administration and Support

2.12 Information for departmental and college system administrators is given at

2.13 A web interface is provided for departmental and college IT Officers to register the mac addresses of computers within their unit that wish to allow to use the service.

2.14 Information

2.15 Fault Reporting

Faults should be reported to hostmaster@ox.ac.uk. OUCS will liaise with department and college computing officers: no end-user support is provided.

Education and Training

2.16 Not applicable.



3. Summary of client’s responsibilities

3.1 The requirements for University systems to make use of these services are given at http://www.oucs.ox.ac.uk/network/dhcp/. A department or college that wishes to join the scheme must surrender a pool of IP addresses from its own network allocation to be used for DHCP. All addresses in the pool must be registered in the DNS.

3.2 The client will provide - Contact details of the person with responsibility for departmental and college networks, with whom OUCS can liaise over address problems, etc.



4. Premium services

4.1 Not applicable.



5. Logging

Logs are kept of client requests and server responses. Logs are retained for 90 days.