HUAWEI TECHNOLOGIES Co., Ltd.

www.huawei.c

om

GPON Multicast Solution

19th Nov 2007

Jack ZhuSenior Product manager

Huawei Technologies Co. LtdPage 2

Multicast Principle

Line Card

Port 1 Port 2 Port 3

Group A Yes No Yes

Group B No Yes Yes

Multicast Table

• IGMP: Internet Group Management Protocol• System maintain the Multicast table through IGMP Snooping/Proxy • System duplicate the Multicast flow base on Multicast table

Join Leave

Query

Backhaul

Switch Card

Huawei Technologies Co. LtdPage 3

Line

Card

ONT

CP_A

STB

STB

CP_A

CP_B

Duplicate to Card

Multicast in GPON Solution

ONT

STB

STB

CP_A

CP_B

Line

Card

IGMP Proxy

CP_B

Group VLAN A

Group VLAN B

IGMP Snooping

Duplicate to Port Duplicate to Port

GEM_Port_4095X

Join

Leave

• Define Multicast Group VLAN for each CP users (virtual VLAN)

• Multicast flow map to GEM_Port 4095 and broadcast to all ONT in that fibre.

• ONT pick up the right channel based on multicast table.

• IGMP Proxy in OLT and IGMP Snooping in ONT to maintain multicast table.

Huawei Technologies Co. LtdPage 4

Line

Card

ONT

CP_A

STB

STB

CP_A

CP_B

Duplicate to Card

GPON Multicast Solution

ONT

STB

STB

CP_A

CP_B

Line

Card

IGMP Proxy

CP_B

Group VLAN A

Group VLAN B

Maintain table through OMCI

Duplicate to Port Duplicate to Port

GEM_Port_4095X

Join

Leave

• Maintain ONT Multicast table through OMCI.

• Reduce the ONT performance requirement and save the cost.

• Easy to achieve the controllable Multicast

OMCI

Huawei Technologies Co. LtdPage 5

IP Core

Multicast Server

Multicast stream

IGMP reportIP group: 1, 2, 3

Ch1Ch2Ch3

Ch1Ch2Ch3

Controllable multicastThrough Headend and STB security

system

Through access equipment control

Multicast user authentication

Channel profile binding with ONT port or

MAC/IP to prevent illegal access

Ch1Ch2

So interesting,

I want to join in.IGMP packet for joining group 3

IP group 1IP group 2

IP group 1IP group 2IP group 3

IGMP packet for joining group 3

Profile “Standard”:

Profile “Premium”:

Ch3 Before subscription, user could preview channel

Port binding with profile “Standard”, not permit this port to join group 3

Port binding with profile “Premium”,

permit this port to join group 3

Ch1Ch2

Ch1Ch2

Ch3

MA5600T

OSS

NMS

Meet customized requirements

Avoid revenue loss

Controllable Multicast

Huawei Technologies Co. LtdPage 6

Line

CardCP_A

Multicast Experience

ONT

STB

STB

CP_A

CP_B

Line

Card

OLT

CP_B

Group VLAN A

Group VLAN B

GEM_Port_4095 Join

Leave

• Performance: Need high capability in processing IGMP packets to reduce the zipping time.

• Need distinguish and record MAC address for IGMP Join/Leave process in case 2 STB connect to one interface.

• Some case need handle IGMP over PPPoE

hub

Thank You !