Bristol (10 Questions)
Contents
Question 1
Provide the name and contact details of your local (Departmental) and Institutional network support staff.
- My Departmental network support contact is:
Jean-Pierre Melot 928 8767 j.p.melot@bristol.ac.uk
Rhys Morris 954 6948 r.morris@bristol.ac.uk
- My Institutional network support contact is:
IaStewart 928 7866 I.Stewart@bristol.ac.uk
Josh Howlett 928 7850 Josh.Howlett@bristol.ac.uk
(+others)
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:
JP Melot & Rhys Morris: All networking & security infrastructure within Physics.
JP Melot also manages microsoft servers; Rhys Morris manages un-Particle Physics
Unix/Linux & 25% of Particle Physics Unix/Linux.
- The institutional contact is responsible for:
UBristol IS manages campus-wide network, UBristol mail, DNS, time, & security (including campus VPN & wireless services).
Question 3
What is a Regional Network Operator (RNO), and why does this matter to you?
- An RNO is:
See http://www.ja.net/services/publications/policy/connection-policy.html
"A Regional Network Operator is an organisation that operates a regional network
and holds a contract with UKERNA
for the delivery of JANET services to those
organisations which receive PRIMARY connections via the regional network."
They are commercial operators; there is an SLA but unsure if they are penalized
if not (it's said RNOs are "measured" against 2 SLAs)
Each RNO has BAR = backbone access router connectioed to JANET
- I care because:
They provide our connection to the Internet. I don't as yet know who the RNO for
Particle Physics in University of Bristol is, though (just started the job).
Question 4
What is SuperJANET4? And more importantly what is SuperJANET5?
- SuperJANET4 is: current production network
UK-wide; not optical; due retire mid-05; Dec end of MCI SJ4 contract
- SuperJANET5 is: next-generation production network
- Resiliency tra RNO & SJ5 core will be provided via dual connections @ 2
locations w/in RN;
- Connection at transmission layer (vs IP)
- RNEP regional ntwk entry point w/HA (backup generator = core reqt)
- optical?
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.
Work in progress
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.
Work in progress
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.
Work in progress
9.x: On the diagram produced in answer to Question 5 colour in the firewall(s) (or other security devices).
Work in progress
(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:about 50% of -- 100Mbps ?? We must/do have a 1GBps link but that
might be direct to JANET - TODO: check network layout with JP.
- Peak traffic: about 80% of 100Mbps (same qualification)
(100Mbps is only the Grid machines - when setup there was some issue with 1Gbps so fellback to 100Mbps)
What is the average and peak traffic flow between your Institutional network and the RNO?
- Average traffic: To-Do: Check this
- Peak traffic: To-Do: Check this
What is the total capacity of your Institutional connection to the RNO?
- Our total capacity is: To-Do: Check this
What are the upgrade plans for your local (Departmental) network; your Institutional network and the network run by the RNO?
- Departmental plans: To-Do: Check this
- Institutional plans: To-Do: Check this
- RNO plans: To-Do: Check this
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
- We're collective believers: YES
Provide information of how changes are made to the rule set of the firewall.
- Firewall rules are changed by:
Request to Information Services who are responsible for institution firewall
Provide a note of the capacity of this device and what happens when that capacity is exceeded.
- The capacity is: TO-DO: Check this
- When it goes over-capacity, the following happens: TO-DO: Check this
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: TO-DO: Check this
- Do you understand the kernel, the bus structure; the NIC; and the disk system?
- I understand: Partly (experienced Unix SysAdmin but new to LCG / this job)
- Do you understand TCP tuning and what it can do for you?
- I understand: Partly...
- Do you understand your application and what it can do to your performance?
- I understand: Soon.