3.7.6.4.Multicast Table
You can use this menu to display all the multicast groups currently active on this switch, the IGMP cache, the multicast forwarding cache, and DVMRP routing information.
Parameter | Description |
IP Multicast | Displays all active multicast groups, including the multicast IP |
Registration Table | address and the corresponding VLANs. (See chapter 3 “IP |
| Multicast Registration Table”.) |
IGMP Cache | Displays all active multicast groups, including the IP interface each |
| entry appears on, the entry age, and the time left before the entry |
| is aged out. |
Multicast | Displays all active multicast groups, including the multicast source |
Forwarding Table | address, the upstream neighbor, the multicast routing protocol, and |
| the entry age. |
DVMRP Routing | Displays the source address for each known multicast service, the |
Table | upstream neighbor, the IP interface each entry appears on, the |
| routing metric, and the entry age. |
DVMRP Neighbor | Displays all the neighbor routers accessible through each IP |
Table | interface, including the entry age, the time left before the entry is |
| aged out, the protocol version, and the number of routing updates |
| received from each neighboring router. |
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Displaying IGMP Cache
The switch provides a local registry of active multicast groups for each IP interface, including the age and expiration time for each entry.
| Parameter | Description |
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| Group Address | An IP multicast group address with subscribers directly attached or |
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| downstream from this switch. |
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| Interface | The IP interface on this switch that has received traffic directed to |
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| the IP multicast group address. (See chapter 3 “Displaying Subnet |
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| Information”.) |
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| Reporter | The IP address of the source of the last membership report |
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| received for this IP Multicast group address on this interface. If no |
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| membership report has been received, this object has the value |
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| 0.0.0.0. |
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| Up Time | The time elapsed since this entry was created. |
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| Expire Time | The time remaining before this entry will be aged out. (The default |
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| is 260 seconds.) |
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