Packets delivered to members of the multicast group are identified by a single multicast group address. Any host, regardless of whether it is a member of a group, can send to a group. However, only the members of a group receive the message. Membership in an IP multicast group is dynamic; hosts can join and leave at any time. There is no restriction on the location or number of members in a multicast group. A host can be a member of more than one multicast group at a time.
IGMP Snooping
A traditional
4.5.1 Configuring IP Multicast Traffic Management
The Multicast Traffic Management Menu allows you to set up group transmission. To access the Multicast Traffic Management Menu, type c in the Configuration Menu. You will see a screen similar to the following:
IntraCore | 3524 IP Multicast Traffic Management Menu | VID: [01] | ||
IP Multicast Forwarding Database |
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IP Multicast Address Count | : 0 |
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IGMP Status |
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IGMP Proxy Report Forward | : [Disabled] |
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<Cmd> | <Description> |
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i | Toggle IGMP Enable/Disable |
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x | Toggle IGMP Proxy Report Forward Enable/Disable | |||
m | IP Multicast Forwarding Database Configuration | |||
d | Display Group Addresses |
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a | Display Group Addresses in All VLAN |
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q | Return to previous menu |
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Command> |
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S)elect VLAN | N)ext VLAN | P)rev VLAN |
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Enabling and Disabling IGMP Snooping
To enable or disable IGMP Snooping on the switch, from the Multicast Traffic Management Menu, type i to toggle the status of IGMP Snooping.
Displaying a Summary of Group Addresses
To display a list of multicast group addresses for the current VLAN, from the IP Multicast Traffic Management Menu, type d. You will see a screen similar to the following:
Multicast IP Addr | Action | ||
+ | |||
xxx.xxx.xxx.xxx |
| IGMP |
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xxx.xxx.xxx.xxx |
| IGMP |
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xxx.xxx.xxx.xxx |
| IGMP |
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xxx.xxx.xxx.xxx |
| Mgm Action |
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End of Summary, | Quit |
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To display a list of all multicast group addresses, from the IP Multicast Traffic Management Menu, type a. You will see a screen similar to the following:
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