10 April 2023 © University of Reading 2006 www.reading.ac.uk

Network InfrastructureIT Supporters Update – 26 June 2007

2To put your footer here go to View > Header and Footer

Contents

• Network overview

• Server connectivity upgrade

• Wireless network changes

• Subnet changes

• DNS and DHCP infrastructure

3To put your footer here go to View > Header and Footer

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

4To put your footer here go to View > Header and Footer

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

5To put your footer here go to View > Header and Footer

Network overview

• 10616 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– 95th percentile is 73.02Mbit/s

6To put your footer here go to View > Header and Footer

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N e t S c r e e n – 5 0

7To put your footer here go to View > Header and Footer

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)

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

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ab

Dia

gS

tat

G48T a 41515

2 51 2 62 2 73 2 84 2 95 3 06 3 17 3 28 2 39 3 41 0 3 51 1 3 61 2 3 71 3 3 81 4 3 91 5 4 01 6 4 11 7 4 21 8 4 31 9 4 42 0 4 52 1 4 62 2 4 72 3 4 82 4

ab MSM-G8X 41211

ERR

ENV

1000BASE-X

1

5 8

4

MSTR/DIAG

SYS/STATCOMPACT FLASH

ACONSOLE

D RMGMT

4 83 72 61 5

MSM-G8X 41211

ERR

ENV

1000BASE-X

1

5 8

4

MSTR/DIAG

SYS/STATCOMPACT FLASH

ACONSOLE

D RMGMT

4 83 72 61 5

Dia

gS

tat

G48T a 41515

2 51 2 62 2 73 2 84 2 95 3 06 3 17 3 28 2 39 3 41 0 3 51 1 3 61 2 3 71 3 3 81 4 3 91 5 4 01 6 4 11 7 4 21 8 4 31 9 4 42 0 4 52 1 4 62 2 4 72 3 4 82 4

ab

Dia

gS

tat

10GBASE-X1 32 4

10G4X 41611

Dia

gS

tat

10GBASE-X1 32 4

10G4X 41611

1 2 3 4 A B 5 6 7 8

CONSOLE

MGMT

COMPACTFLASH

MSM-1XL60016

MS

TR

EN

V

SY

S

ER

R

CONSOLE

MGMT

COMPACTFLASH

MSM-1XL60016

MS

TR

EN

V

SY

S

ER

R

10G6X61050

DS

1

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G60X61010

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DS

G60X61010

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2 51 2 62 2 73 2 84 2 95 3 06 3 17 3 28 2 39 3 41 0 3 51 1 3 61 2 3 71 3 3 81 4 3 91 5 4 01 6 4 11 7 4 21 8 4 31 9 4 42 0 4 52 1 4 62 2 4 72 3 4 82 4

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Dia

gS

tat

G48T a 41515

2 51 2 62 2 73 2 84 2 95 3 06 3 17 3 28 2 39 3 41 0 3 51 1 3 61 2 3 71 3 3 81 4 3 91 5 4 01 6 4 11 7 4 21 8 4 31 9 4 42 0 4 52 1 4 62 2 4 72 3 4 82 4

ab

Dia

gS

tat

G48T a 41515

2 51 2 62 2 73 2 84 2 95 3 06 3 17 3 28 2 39 3 41 0 3 51 1 3 61 2 3 71 3 3 81 4 3 91 5 4 01 6 4 11 7 4 21 8 4 31 9 4 42 0 4 52 1 4 62 2 4 72 3 4 82 4

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Dia

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tat

G48T a 41515

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ab MSM-G8X 41211

ERR

ENV

1000BASE-X

1

5 8

4

MSTR/DIAG

SYS/STATCOMPACT FLASH

ACONSOLE

D RMGMT

4 83 72 61 5

MSM-G8X 41211

ERR

ENV

1000BASE-X

1

5 8

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MSTR/DIAG

SYS/STATCOMPACT FLASH

ACONSOLE

D RMGMT

4 83 72 61 5

Dia

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tat

G48T a 41515

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ab

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tat

10GBASE-X1 32 4

10G4X 41611

Dia

gS

tat

10GBASE-X1 32 4

10G4X 41611

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

CONSOLE

49 50

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Extreme Networks Summit48siR

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1000 BASE-X

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- ACTIVITY

- LINK OK

- DISABLED1 2 3 4

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48

CONSOLE

49 50

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Extreme Networks Summit48siR

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1000 BASE-X

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CONSOLE

FAN

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CONSOLE

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Extreme NetworksSummit EPS-T

FWE-WK FWE-EG

DMZ-WK

SLB-WK SRV-WK SRV-EG

SRV-SEC-WK SRV-SEC-EG

SLB-WK

DMZ-EG

9To put your footer here go to View > Header and Footer

Server connectivity upgrade

10To put your footer here go to View > Header and Footer

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

11To put your footer here go to View > Header and Footer

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 ‘username@reading.ac.uk’ instead

• Native CIFS access will be turned off – shares still accessible through NetDrive service (WebDAV gateway)

12To put your footer here go to View > Header and Footer

Guest / wireless network changes

• New IP address ranges:– 134.225.24.0 – 134.225.27.255 for JANET Roaming

service– 134.225.28.0 – 134.225.31.255 for plug-in and

‘rdg.ac.uk’ service

• Old address ranges to be removed by September 2007:– 134.225.8.0 – 134.225.15.255

13To put your footer here go to View > Header and Footer

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

14To put your footer here go to View > Header and Footer

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

15To put your footer here go to View > Header and Footer

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