5.16.1 Monitor-IPMC – IGMP Snooping

The following sections describe the IGMP Snooping.

Figure 5-67. IGMP Snooping Status

The IGMP Snooping Status page has the following parameters:

  • VLAN ID: The VLAN ID of the entry.
  • Querier Version: Working Querier Version currently.
  • Host Version: Working Host Version currently.
  • Querier Status: Shows the Querier status is "ACTIVE" or "IDLE". "DISABLE" denotes the specific interface is administratively disabled.
  • Queries Transmitted: The number of Transmitted Queries.
  • Queries Received: The number of Received Queries.
  • V1 Reports Received: The number of Received V1 Reports.
  • V2 Reports Received: The number of Received V2 Reports.
  • V3 Reports Received: The number of Received V3 Reports.
  • V2 Leaves Received: The number of Received V2 Leaves.
  • Router Port: Display which ports act as router ports. A router port is a port on the Ethernet switch that leads towards the Layer 3 multicast device or IGMP Querier. Static denotes the specific port is configured to be a router port. Dynamic denotes the specific port is learnt to be a router port. Both denote the specific port is configured or learnt to be a router port.
  • Port: Switch port number.
  • Status: Indicate whether specific port is a router port or not.
Figure 5-68. IGMP Snooping Groups Information

The IGMP Snooping Groups Information page has the following parameters:

  • VLAN ID: The VLAN ID of the group.
  • Groups: Group address of the group displayed.
  • Port Members: Ports under this group.
Figure 5-69. IGMP Snooping SFM Information

The IGMP Snooping IPv4 SFM Information page has the following parameters:

  • VLAN ID: The VLAN ID of the group.
  • Group: Group address of the group displayed.
  • Port: Switch port number.
  • Mode: Each <VLAN ID, Group, Port> has a filter mode of either Include or Exclude, described further in section 6.2.1 of RFC3376.
  • Source Address: IP Address of the source. If there are no specific source addresses the text is "< Any>". This may happen if a host on the port is in IGMPv1 or IGMPv2 mode or simply hasn't specified particular sources in the IGMPv3 reports. On the contrary, if there indeed are sources in the IGMPv3 reports, there is also a "Catch-remaining" entry, which matches on source addresses not already specified above its line. This is marked with "<Other>". Currently, the maximum number of IPv4 source address per VLAN ID per group is 8.
  • Type: This field indicates whether the entry is forwarding (Allow) or blocking (Deny).
  • Hardware Filter/Switch: Shows whether blocking/forwarding of this entry is handled by hardware or not.