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EFFICIENT HANDLING OF BRIDGING THE TRAFFIC BETWEEN CUSTOMER AND

SERVICE VLAN USING PROVIDER BRIDGING

Vivek Gnanavelu

17-04-2014

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OBJECTIVE

To identify the problems while handling the traffic in most of the deployment scenario and provide a solution to handle them better.

To verify the proposed solution by deploying them on a real hardware.

17-04-2014

15/04/2023

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MOTIVATION FOR PROJECT

There are three levels of traffic in a network topology.

1. Access 2. Metro 3. Core The traffic will be steadily increasing when we

are moving from Access level to the Core level The main challenge lies in handling the traffic

better, particularly at the core level. This project identifies the problems in

handling, by collecting various deployment scenario and formulating a generalized scenario.

This project provides solution for the generalized problem scenario using various standards like Provider Bridging.

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PROVIDER BRIDGING (PB)

Payload

Ethernet Type

Src Address

Dst Address

Payload

Ethernet Type

VID

Src Address

Dst Address

Payload

Ethernet Type

CVID

SVID

Customer

Src Address

Customer

Dst Address

802.1D

802.1Q

802.1ad

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PROBLEM SCENARIO

[UNTAGGED]

CB1

CB2

CB3

CB4

CB5

PB1

PB2

PB3 PB4

[20-50]

[20-50]

[30-100]

[30-100]

C2

C1

C3

C4

C5

Access Metro Core

100

100

100

100

100

100

100

100

100

100

100

200

200

200

400 400

[20-50] 120[UNTAGGED] 150

[20-50] 220[51-100] 250VLAN Id

loop

loop

Fault tolerance

congestion

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METHODOLOGY : SOLUTION SCENARIO

[UNTAGGED]

CB1

CB2

CB3

CB4

CB5

PB1

PB2

PB3 PB4

[20-50]

[20-50]

[30-100]

[30-100]C2

C1

C3

C4

C5

Metro Core

100

100

100

100

100

100

100

100

100

100

200

200

200

200

400

400

[20-50] 120[UNTAGGED] 150

[20-50] 220[51-100] 250

PB5

PB6

PB7

4+1 HSB

120 1120150 1150220 1220250 1250

400

400

400

ERPS(50ms)

MSTP

RSTP

CVLAN - SVLAN

SVLAN - SVLAN

7

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RESULTS Captured Packet – Customer Bridge [1-2]

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Captured packet of Untagged Traffic [3]

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Captured packet – Customer Bridge [4-5]

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Captured Packet - Provider Bridge [VLAN 120]

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Captured Packet – RSTP

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Data Packet

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Control Packet - ERPS

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CONCLUSION

The project discusses on various problems in the current traffic handling mechanisms and proposes solutions using the standards like Provider Bridging, LAG and STP.

The results obtained confirms the existence of the above mentioned standards and technologies.

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FUTURE WORK

In future, the project focuses on using “Provider Backbone Bridging (PBB)”.

PBB defines a 12 bit B-VID (backbone VLAN ID) and 24 bit I-SID (Service Instance VLAN ID). The bridges switch the traffic being completely unaware of the customer MAC addresses. I-SID allows distinguishing the services within a PBB domain. Thereby, we can provide the highest-level of security by hiding the customer MAC addresses at the core level.

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REFERENCES

Research on Double VLAN scheme in Ethernet Network, Li XinZhan, Xu Genchao, IEEE 2009.

Understanding Ethernet Ring Protection Switching (ERPS) for carrier networks, Aricent Whitepaper.

IEEE Standard for Local and metropolitan area networks “Virtual Bridged Local Area Networks” (IEEE Standard 802.1Q-2005)

  IEEE Standard for Local and metropolitan area networks “Media Access

Control (MAC) Bridges and Virtual Bridge Local Area Networks”(IEEE Standard 802.1Q-2011)

  IEEE Standard for Local and metropolitan area networks “Media Access

Control (MAC) Bridges and Virtual Bridge Local Area Networks”(IEEE Standard 802.1Q-2011)

  IEEE Standard for Local and metropolitan area networks “Virtual

Bridged Local Area Networks -Provider Bridges” (IEEE Standard 802.1ad-2005)

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Thank You