Accton Technology ES4626 - Manual (Page 669)

669
Example:
Switch#show ip multicast source-control detail
ip multicast source-control is enabled Interface Ethernet use multicast source control
access-list 5000
access-list 5000 permit ip 10.1.1.0 0.0.0.255 232.0.0.0 0.0.0.255
access-list 5000 deny ip 10.1.1.0 0.0.0.255 233.0.0.0 0.255.255.255
16.5.5.1.5 show ip multicast source-control access-list
Command: show ip multicast source-control access-list
show ip multicast source-control access-list <5000-5099>
Function:
Display source control multicast access-list of configuration
Parameter: <5000-5099>: access-list number
Default: None
Command Mode: Admin Mode and Global Mode
Usage Guide: The command displays source control multicast access-list of
configuration
Example:
Switch#sh ip multicast source-control access-list
access-list 5000 permit ip 10.1.1.0 0.0.0.255 232.0.0.0 0.0.0.255
access-list 5000 deny ip 10.1.1.0 0.0.0.255 233.0.0.0 0.255.255.255
16.6 IGMP
16.6.1 Introduction to IGMP
IGMP (Internet Group Management Protocol) is the protocol in TCP/IP protocol
family which is responsible for IP multicast member management. It is used to set up and
maintain multicast group member relationship between IP host and its neighbor multicast
switches. IGMP does not include the spread and maintenance of relation information of
group members among multicast switches, this work is accomplished by each multicast
routing protocol. All hosts participating in multicast must implement IGMP protocol.
Hosts participating IP multicast can join in and exit multicast group at any location,
any time and without limit of member total. Multicast switch does not need and not likely
to save all relationships of all hosts. It only gets to know if there are receivers of some
multicast group, i.e. group member, on the network segment each interface connects to.
And the host only needs to save which multicast groups it joined.
IGMP is asymmetric between host and router: the host needs to respond the IGMP
query messages of multicast switches, i.e. to report message response in membership;