Oxford (10 Questions)

Answers for Oxford

Question 1

Provide the name and contact details of your local (Departmental) and Institutional network support staff.

• My Departmental network support contact is: Chris Hunter network@physics.ox.ac.uk
• My Institutional network support contact is: Roger Treweek, Geoff Lescott, Gavin Litchfield network@ox.ac.uk??

Question 2

Provide details of the responsibilities, together with the demarcation of those responsibilities, of your local and Institutional network support staff.

• The departmental contact is responsible for: From the fibre comming into Physics onwards
• The institutional contact is responsible for: Janet connection, Oxford backbone and fibre to the dept.

Question 3

What is a Regional Network Operator (RNO), and why does this matter to you?

• An RNO is: The RNOs are a key partner in providing JANET services to the connected education and research sectors. Our Local Metroploitan area network is Thames Valley Network http://www.ja.net/sj5/tvnprocurement.html
• I care because: They provide access to Super Janet4 and 5 in the future.

Question 4

What is SuperJANET4? And more importantly what is SuperJANET5?

• SuperJANET4 is: It is the current UK backbone infrastructure network of mainly 10GB/s
• SuperJANET5 is: Is the future upgrade of Janet due to come online in 2006

Questions 5, 6, 7 and 9 (part)

5: Draw a simple diagram showing your local (Departmental) network and sufficient of your Institutional network such that you can trace a line from your end-system to the connection from your Institutes network into the RNO infrastructure. File:Oxford-network-topology.gif

6: On the diagram produced in answer to Question 5, show the capacity of each link in the network and provide a note against each link of its contention ratio.

7: On the diagram produced in answer to Question 5, colour and distinguish the switches and routers and for each device provide a note of its backplane capability.

9.x: On the diagram produced in answer to Question 5 colour in the firewall(s) (or other security devices).

(upload an image via http://wiki.gridpp.ac.uk/wiki/Special:Upload)

Question 8

What is the average and peak traffic flow between your local (Departmental) network and the Institutional network?

• Average traffic:
• Peak traffic:

What is the average and peak traffic flow between your Institutional network and the RNO?

• Average traffic:
• Peak traffic:

What is the total capacity of your Institutional connection to the RNO?

• Our total capacity is:

What are the upgrade plans for your local (Departmental) network; your Institutional network and the network run by the RNO?

• Departmental plans:
• Institutional plans:
• RNO plans:

Question 9

Do you believe in IS Security? Does your Institute believe in IS Security?

• I'm a believer: YES
• We're collective believers: YES

Do you believe in firewalls? Does your Institute believe in firewalls?

• I'm a believer: YES The computing Services Run one
• We're collective believers: YES Physics Also run a separate firewall

Provide information of how changes are made to the rule set of the firewall.

• Firewall rules are changed by: Physics by local it staff, OUCS by Network support

Provide a note of the capacity of this device and what happens when that capacity is exceeded.

• The capacity is: 1Gb/s for both devices
• When it goes over-capacity, the following happens:

Question 10

What is the best performance you can achieve from your end-system to an equivalent system located in some geographically remote (and friendly!) Institute?

• Best performance is:

For your end-system:

Do you understand the kernel, the bus structure; the NIC; and the disk system?

• I understand: Not yet

Do you understand TCP tuning and what it can do for you?

• I understand: Not in detail

Do you understand your application and what it can do to your performance?

• I understand: Not yet