MA5600T Multicast Feature Glance

Definition

Multicast is group communication where data is addressed to a group of destination hosts simultaneously. Each multicast address represents a multicast group and all hosts in a multicast group can receive the same data. Multicast applies in IPTV,multimedia conferencing, and gaming services.

Value

Reduces bandwidth overheads

Each link carries at most one copy of the same multicast data, maximally reducing bandwidth overheads.

Decreases load

Transmitting data in multicast mode decreases video server’s and CPU’s load and does not significantly increase network’s load even if the number of users increases.

Prolongs transmission distance

Multicast packets can be transmitted across network segments,implementing long-distance transmission for large-scale data.

Prolongs transmission distance

Multicast packets can be transmitted across network segments,implementing long-distance transmission for large-scale data.

Application

Multicast applies in the following scenarios: FTTB/FTTC, FTTH, FTTO, as well as OLT user ports connecting to multicast users.

Highlights

Powerful Multicast Capabilities, Improving IPTV Service Deployment

Primary Features		Performance
8 K multicast users (1 K= 1024) 4 K multicast programs Concurrent playing of 4000 IPv4 and 2000 IPv6 multicast programs when the SCUH control board is used		Multiple levels of multicast data duplication IGMP fast leave 50-ms channel switching 3200-pps IGMP packet processing if the SCUH control board is used Physical-layer G.INP retransmission for better user experience on the IPTV service 900-pps IGMP packet processing on the GPFD board
Features

 

Highlights

Conversion Between M-VLANs and C-VLANs, Implementing Multiple CPs Sharing One ONT and Supporting Open Access

The multicast data transmission meets the service requirement of multiple CPs renting different ports on the same ONT in the open access scenario, improving revenue from resources.

Layer 3 Multicast for Flexible Multicast Group Address Usages

The programs issued from different multicast sources can use the same group IP address (GIP).

Compared with Layer 2 multicast, Layer 3 multicast relieves GIP limitations due to group MAC address (GMAC) conflict.

Highlights

Comprehensive Fault Locating Methods, Facilitating Rapid Multicast Service Fault Rectification

User Log	Identify causes for program ordering failures by querying user logs or fault-related operation records.
IGMP Statistics	Identify IGMP packet transmit and receive issues based on IGMP packet statistics.
Multicast Traffic Statistics	Based on multicast traffic statistics, determine whether: Multicast data has arrived at the inbound or outbound port on the MDU at the data forwarding layer. The transmission rate is excessively low. Packet loss has occurred.
Multicast Emulation	Emulate program ordering performed by a multicast user to locate faults by querying traffic and user information in real time.

Board recommendation

Specifications	H802SCUN	H801SCUH	H801SCUK
Number of multicast logs	32768	32768	32768
IGMP packet processing capability	400 pps	3200 pps	400 pps
Number of multicast users	If GPON service boards are used: 8192 If other service boards are used: 2048	If GPON service

boards are used:

16384

If other service
boards are used:
2048If GPON service

boards are used:

8192

If other service
boards are used:
2048Number of multicast programs409640964096Number of concurrent online programs2000IPv4: 4000
IPv6: 20002000Number of multicast cascading ports204840962048