IGMP

Multicast > IGMP > Basic Settings

• Global Status—specifies the global status of the IGMP protocol in the switch. The default option is Disabled. The list contains:
  • Enabled—enables the IGMP globally.
  • Disabled—removes all dynamic multicast entries, stops all timers for route entries, and disables IGMP on all IGMP enabled interfaces.
• Global Limit—enter the total number of multicast groups that are allowed globally. The default value is 0. The value ranges from 0 to 255.
  Note:

  This field can be configured only if IGMP Global Status is enabled. If the current group count reaches the global limit, no membership reports are honored for any interface

• Current Group Count—displays the current count of added groups added. a value from 0 to 255.

• Apply—modifies attributes and saves the changes.
• Reset—resets to default value for respective fields and discards all user input

Multicast > IGMP > Interface Configuration

• Select—select the interface for which the configuration needs to be modified or deleted.
• Interface—select the interface for which IGMP is enabled.
• IGMP Admin Status—select the IGMP admin status for the interface. The default option is Disabled. The list contains:
  • Enabled—enables the IGMP on the interface.
  • Disabled—disables IGMP on the interface.
• Operating Version—select the version of IGMP which is running on the interface. For IGMP to function correctly, all routers on a LAN must be configured to run the same version of IGMP. The default option is Version 2. The list contains Version 1, Version 2, and Version 3.

• Fast Leave—select the status of the Fast Leave feature of the IGMPv3 protocol. The default option is Disabled. The list contains:
  • Enabled—provides immediate intimation to the Multicast Routing Protocol on the last member leaving the group.
  • Disabled—does not support Fast Leave feature
  Note:

  The Fast Leave feature must be enabled only on the interfaces where there is a single host. The Fast Leave feature can be enabled on interface having more than one host only if all hosts are in Version3 mode.

• Channel Tracking—select the status of channel tracking feature of the IGMPv3 protocol. Channel tracking is the ability of a system to keep track of each individual host that is joined to a particular multicast group or channel. The default option is Disabled. The list contains:
  • Enabled—enables the router to keep track of each individual host that is joined to a particular multicast group or channe.
  • Disabled—disables explicit channel tracking feature support.
  Note:

  This configuration is effective only if IGMP is enabled on the interface. Channel Tracking status can be enabled only if the IGMP version is selected as version3.

• Query Interval—enter the frequency at which IGMP Host-Query packets are transmitted on the interface. This value ranges from 1 to 65535 seconds. The default value is 125 seconds.
• Query Response Time—enter the maximum response time forIGMP queries. This value ranges from 1 to 255. The default value is 100 seconds.
• Robustness Value—enter the Robustness value on this interface. The Robustness value allows tuning for the expected packet loss on a subnet. If a subnet is expected to be lossy (having a high rate of packet loss), the Robustness Value may be increased. IGMP is robust to packet losses. This value ranges from 1 to 255. The default value is 2.
• Interface Group Limit—enter the total number of multicast groups that can be allowed for this interface. If IGMP interface current group count reaches this Interface Limit value, no membership reports will be honored on this interface except the group list mapped to this interface. This value ranges from 0 to 255.
• Group List ID—enter the except group list id for an interface. This group list is exempted for limiting on this interface. This value ranges from 0 to 4294967295.
  Note:

  This field can be configured only if Interface Group Limit is configured.

• Group Current Count—displays the current count of groups that are added to the interface. This counter is incremented for each valid membership report on this interface and decremented for leave report if Interface Group Limit is configured for this interface. This value ranges from 0 to 255.
• Join Rate Limit—enter the Join Rate Limit for a downstream interface in units of the number of IGMP packets per second. This value ranges from 100 to 1000. The default value is 0.

• Add—adds and saves new configuration.
• Reset—resets to default value and discards all user input.
• Apply—modifies attributes and saves the changes.
• Delete—deletes the selected entry.

Multicast > IGMP > Group Information

• Select—select the interface for which the configuration needs to be deleted.
• Interface—select the interface from the list of interfaces for which the entry contains information for an IP multicast group address.
• Group Address—enter the IP multicast group address.
• Source Address—enter the IP Source address where multicast data packets originate.
• Filter Mode—specifies the state in which the interface is currently set. This indicates the relevance of the corresponding source list entries for IGMPv3 interfaces. This is a read-only field. The default option is Exclude. The list contains:
  • Include—specifies the Filter Mode as Include.
  • Exclude—specifies the Filter Mode as Exclude.

• Add—adds and saves new configuration.
• Reset—resets to default value and discards all user input.
• Delete—deletes the selected entry.

Multicast > IGMP > Source Information

• Interface—select the interface from the list of interfaces for which the entry contains information for an IP multicast group address.
• Group Address—enter the IP multicast group address.
• Source Address—enter the IP Source address.
• Reporter Address—displays the IP Address of the host requesting multicast group information. When tracking is enabled, it displays the IP address of the host for individual membership entry.

Multicast > IGMP > Grouplist Information

• Group List ID—enter the global group list Identifier. The value ranges from 1 to 4294967295.
• Group IP Address—enter the multicast group IP address. 239.255.255.250 entered in the example.
• Mask—enter the subnet mask address of the IGMP group.

• Add—adds and saves new configuration.
• Reset—resets to default value and discards all user input.
• Delete—deletes the selected entry.