H3C S3600 Series User Manual

Operation Manual – Multicast
H3C S3600 Series Ethernet Switches-Release 1510 Chapter 2 IGMP Snooping Configuration
2-2
Internet
Video stream
VOD Ser ver
Layer 2 Ether net switc h
Multicast router
Video stream
Multicast
group member
Non-multicast
group member
Non-multicas t
group member
Video stream
Internet
Video stream
VOD Ser ver
Layer 2 Ether net s witc h
router
Video
Multicast
group member
Non-multicast
group member
Non-multicast
group member
Video stream
Multicast packet transmission
Internet
Video stream
VOD Ser ver
Video stream
Multicast
group member
Non-
group member
Non-
group member
Video stream
Internet
Video stream
VOD Ser ver
Multicast
Multicast
group member
Non-
group member
Non-
group member
Video stream
Multicast packet transmission
without IGMP Snooping
when IGMP Snooping runs
stream
Video
stream
Internet
Video stream
VOD Ser ver
Layer 2 Ether net switc h
Multicast router
Video stream
Multicast
group member
Non-multicast
group member
Non-multicas t
group member
Video stream
Internet
Video stream
VOD Ser ver
Layer 2 Ether net s witc h
router
Video
Multicast
group member
Non-multicast
group member
Non-multicast
group member
Video stream
Multicast packet transmission
Internet
Video stream
VOD Ser ver
Video stream
Multicast
group member
Non-
group member
Non-
group member
Video stream
Internet
Video stream
VOD Ser ver
Multicast
Multicast
group member
Non-
group member
Non-
group member
Video stream
Multicast packet transmission
without IGMP Snooping
when IGMP Snooping runs
stream
Video
stream
Figure 2-1 Multicast packet transmission with or without IGMP Snooping enabled
2.1.2 IGMP Snooping Implementation
I. IGMP Snooping terminologies
Before going on, we first describe the following terms involved in IGMP Snooping:
z Router port: the switch port directly connected to the multicast router.
z Multicast member port: a switch port connected to a multicast group member (a
host in a multicast group).
z MAC multicast group: a multicast group identified by a MAC multicast address and
maintained by the switch.
The following three timers are closely associated with IGMP snooping.
Table 2-2 IGMP Snooping timers
Timer Setting
Packet normally received
before timeout
Timeout action
on the switch
Router port
aging timer
Aging time of the
router port
IGMP general query
message
Consider that this
port is not a router
port any more.
Multicast
member
port aging
timer
Aging time of the
multicast
member ports
IGMP message/PIM
message/Dvmrp Probe
message
Send an IGMP
group-specific
query message to
the multicast
member port.
Query
response
timer
Query response
timeout time
IGMP report message
Remove the port
from the member
port list of the
multicast group.

H3C S3600 Series Specifications

General

Brand	H3C
Model	S3600 Series
Category	Switch
Language	English