BTW Planned Engineering Works 90 day overview May to July 2012

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BTW Planned Engineering Works 90 day overviewMay to July 2012

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BTW 2012 Network Changes – 3 month rolling plan

• Whilst BTW has continually worked to enhance its network, we are currently undergoing an exceptional level of change driven by four main drivers:-

– Stability – to improve the reliability of the network, BTW is targeting certain network elements with hardware and software improvements.

– Capacity – the need for additional capacity is driven by an increase in the number of broadband users on the 21C network (through migration from 20C and growth) and also by the ever-increasing bandwidth demands of those users.

– Resilience –to improve the resilience of the network , BTW is actively removing single points of failure from the network – New Functionality – to meet the needs of the market BTW needs to enhance its network to deliver the services its

customers require.

• This presentation outlines the key upgrade programmes, their drivers, customer impact and the number of upgrades per programme per week.

• BTW is keen to deliver all the required improvements as quickly as possible whilst actively managing the risk to customers. For this reason a range of run-rates against each programme has been outlined. The actual run-rates achieved will be determined by this ongoing live analysis of risk.

• Customer outage times for the PEWs start between 00:01 and 02:00 with the aim of completing customer impacting work by 04:00. This allows 2 hours for roll-back should the PEW be unsuccessful.

• Business as usual capacity upgrades and upgrades to resilient structures have not been listed here.

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BTID Network Change – Major Project Summaries

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Network change

Status Programme Number

Summary

MSPE software upgrade.

Status – 8 Core

upgrades remain to be completed

Code upgrade (3.9.1 + SMU patches) is required on the Cisco MSPE to improve platform stability.

• Next upgrade planned for Stepney Green 10th May.• Completion is targeted for 31st May.

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4


20

Network change


Summary

2nd Vendor MSPE

Status – Deployment

Ongoing

Introduce 2nd vendor MSPE for WCC and WBMC shared resilience.

• Upgrade of 12th site for WCC resilience complete on 9 th May. 8 more remain to be completed for WCC• Upgrade of 6th device complete for WBMC resilience on 9 th May. 7 remain to complete for WBMC shared.• Plan for expedited WBMC upgrade programme is now in place.

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5


29

Network change


Summary

21c BRAS Card

replacement

Status – Deployment

Ongoing (83% complete)

Replace line-cards in 21c BRAS

• Deployment of DDR cards is progressing. 190 routers completed to date.• Revised plan completes 11th May.

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6


26

7

20C Upgrades

Edinburgh LPA– To meet ongoing 20c usage growth bigger LPA is required.

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8

21C Upgrades

6

9

11

20

SVLAN moves - these moves offload SVLAN’s (bundles of Broadband traffic) from one BRAS to another. This is carried out to alleviate capacity issues mplet

Access MCLAG – removes single point of failure between MSAN (mostly Fibre MSAN which could aggregate several Copper MSAN’s) and Metro Node to improve overall availability

MPLS Core Router Upgrades required as existing software is soon to become “End of Life”. Phase 1 commenced no customer impact. Phase 2 due to commence Dec 11.

MSE Upgrades- Provide BB edge functionality on 7750 switches and additional BB capacity. Achieved by upgrading existing Ethernet Edge devices

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21C Upgrades

Additional BEA capacity is required and this is being achieved by introducing a bigger switch.

To increase platform resilience a 2nd vendor MSPE is being introduced.

21c BRAS software upgrade to increase stability of the platform

Software upgrade which supports new line cards for capacity and stability benefits and also delivers energy efficiency savings.

Linecard hardware replacement to prevent no customer impacting card failures.

Progr

No:

Upgrade Key Drivers

Upgrades Complete / Total

BB EUs and/or Ethernet Circuits per upgrade

Upgrades per PEW

Affected Products

Av. End user outage (Mins)

Upgrades per week Progress

Planned End

Feb

Mar

Apr

may

EEA – EES Backhaul Uplift

Capacity 215/1060 Non Customer impacting

40 None 0 5 Jan13

High ThroughputBEA-VS

Capacity 2/5 Av 120K 1 WBC / WCC

45 mins 1 June 12

2nd Vendor MSPE

Stability 18/51 Av 20k 1 WBC / WCC /

Ethernet

30 secs – 10 mins

2 May 12

BRAS software Upgrade

Stability 25/200 Av 17000Max

32000

1 WBC / WBMC/

WCC

45 mins Up to 50 May 12

Copper MSANSoftware Upgrade

Stability / Capacity

3721/5844 Average 700

120 WBC /WBMC

30 mins 480 May 12

DDR Card replacement

Stability 190/200 Non Customer impacting

10 None 0 50 May 12

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22

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27

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EEA – EES 7750 Lag Migration - This change provides increased scalability .

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Completed 20C Upgrades

1

14

2

11


3

5

8

10

12

12


7

13

19

18

21

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15

16

3

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Re-planned PEWs

• The level of network change that BTW is driving through inevitably leads to a need to re-plan a number of PEWs.

• The reasons for these re-plans include:- unforeseen technical issues specific to (or indirectly impacting) that programme, re-prioritisation of work, insufficient time to complete all work on the night and operational decisions.

• BTW have made some improvements to the management of re-planned PEWs and where possible will seek to avoid using Emergency PEWs for this re-planned work. In some cases re-planned work will need to be carried out with less notice.

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Broadband Services on 21CN

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279

24

20

628 26

22

23 11

16

Ethernet Service on 21CN

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Descriptions

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Management of risk

BTW Planned Engineering Works 90 day overview May to July 2012

Documents

Transcript of BTW Planned Engineering Works 90 day overview May to July 2012