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© University of Reading 2006www.reading.ac. uk 20 April 2014 Network Infrastructure IT Supporters Update – 26 June 2007.

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Presentation on theme: "© University of Reading 2006www.reading.ac. uk 20 April 2014 Network Infrastructure IT Supporters Update – 26 June 2007."— Presentation transcript:

1 © University of Reading 2006www.reading.ac. uk 20 April 2014 Network Infrastructure IT Supporters Update – 26 June 2007

2 To put your footer here go to View > Header and Footer2 Contents Network overview Server connectivity upgrade Wireless network changes Subnet changes DNS and DHCP infrastructure

3 To put your footer here go to View > Header and Footer3 Network overview Two separate networks –readingConnect (for halls of residence) –Campus network Both networks share common border area Focus on campus network –Each building connected at a minimum of 1Gbit/s –Except for Bulmershe and halls of residence New router to be installed at Bulmershe to make better use of existing switches and infrastructure Halls of residence too far away for more than 100Mbit/s

4 To put your footer here go to View > Header and Footer4 Network overview Border network forms connection between campus network, readingConnect and JANET Two JANET connections –Each 1Gbit/s over long-range fibre –Diverse routes –Endpoints over 1.5Km apart Fully resilient Traffic split across both links during normal operation –Campus traffic one way –readingConnect traffic goes the other

5 To put your footer here go to View > Header and Footer5 Network overview IP addresses in use by 8964 unique hosts 1844 hosts registered but not seen on network since Feb –These will be removed at the end of July –A list will be distributed to IT Supporters at start of July Monthly stats (2 hour average) show: –92.81Mbit/s peak traffic flow from JANET to campus –Average flow of 27.17MBit/s inbound and 15.39MBits/ outbound –95 th percentile is 73.02Mbit/s

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7 7 Server connectivity upgrade Introduction of 10Gbit Ethernet into the core Two new (large) switches to be installed into ITS machine rooms –Each switch will have 10GBit/s to each core router (20Gbit/s) –Two switches connected to each other at 20Gbit/s –Each switch configured to connect up to 240 ports at 1Gbit/s –Switches configured as redundant pair for routing server VLANs Two small switches will provide secondary connections –To be used by important systems only (Exchange, etc)

8 To put your footer here go to View > Header and Footer8

9 9 Server connectivity upgrade

10 To put your footer here go to View > Header and Footer10 Guest / wireless network changes Deployment of JANET Roaming / Eduroam –Web-based redirect no longer permitted to be advertised as eduroam name –New wireless network across campus to sit alongside existing service SSID eduroam Requires 802.1x and WPA / WPA2 encryption Set up and forget – works everywhere that has Eduroam

11 To put your footer here go to View > Header and Footer11 Guest / wireless network changes Changes to existing rdg.ac.uk service –Will move outside firewall But retain protection from Internet hosts Same set of base services as for JANET Roaming Additional resilience through second BlueSocket device –Web-based login will accept eduroam / JANET Roaming credentials –Proposed service changes Summer 2008: Users will no longer be able to sign on with plain username –Must use instead Native CIFS access will be turned off – shares still accessible through NetDrive service (WebDAV gateway)

12 To put your footer here go to View > Header and Footer12 Guest / wireless network changes New IP address ranges: – – for JANET Roaming service – – for plug-in and rdg.ac.uk service Old address ranges to be removed by September 2007: – –

13 To put your footer here go to View > Header and Footer13 Subnet changes Psychology to complete move to.114 subnet Soil and Plant Science to move to own subnets Systems Engineering to vacate.4 and.56 subnets Student subnets in Careers, Chaplaincy and RUSU to be separated

14 To put your footer here go to View > Header and Footer14 DNS / DHCP infrastructure Currently two central servers –Sun hardware –Open source software –A bunch of in-house scripts to generate DNS zones –More in-house scripts to generate DHCP configuration –Painful to manage –Relatively slow turn-around for IP address allocation

15 To put your footer here go to View > Header and Footer15 DNS / DHCP infrastructure New Infoblox 1550 appliances (HA pair) –Take over as master DNS database –Replace Sun boxes for DHCP –GUI for managing IP address and hostname allocation –Should give faster turn-around on IP allocations –Possibility of delegation (at least read- only) to IT supporters Expansion of DNS topology –Existing Sun boxes become dedicated DNS cache servers –Addition of DNS servers into DMZ for best practise –Possible additional IT Services managed DNS secondary server at off-site co-location facility


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