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Lantronix
SM24TBT2DPA and SM24TBT2DPB Web User Guide
Mode:
Specify the MVR mode of operation. In Dynamic mode, MVR allows dynamic MVR membership
reports on source ports. In Compatible mode, MVR membership reports are forbidden on source ports.
The default is Dynamic mode.
Tagging:
Specify whether the traversed IGMP/MLD control frames will be sent as Untagged or Tagged
with MVR VID. The default is tagged.
Priority:
Specify how the traversed IGMP/MLD control frames will be sent in prioritized manner.
The default Priority is 0.
Define the maximum time to wait for IGMP/MLD report memberships on a receiver port before
removing the port from multicast group membership. The value is in units of tenths of a second.
The range is 0 - 31744. The default LLQI is 5 tenths or one-half second. LLQI (Last Listener Query
Interval) is the maximum response time used to calculate the Maximum Response Code inserted into
Specific Queries. It is used to detect the departure of the last listener for a multicast address or source. In
IGMP, this term is called LMQI (Last Member Query Interval).
Interface Channel Setting:
When the MVR VLAN is created, click the Edit symbol to expand the
corresponding multicast channel settings for the specific MVR VLAN. Summary about the Interface
Channel Setting (of the MVR VLAN) will be shown besides the Edit symbol.
Port:
The logical port for the settings.
Role:
Select the port role by clicking the Role symbol to switch the setting.
I
indicates Inactive;
S
indicates Source;
R
indicates Receiver. The default Role is
I
nactive. Configure an MVR port of the
designated MVR VLAN as one of the following roles:
Inactive
:
The designated port does not participate in MVR operations.
Source
:
Configure uplink ports that receive and send multicast data as source ports. Subscribers
cannot be directly connected to source ports.
Receiver
:
Configure a port as a receiver port if it is a subscriber port and should only receive multicast
data. It does not receive data unless it becomes a member of the multicast group by issuing IGMP/MLD
messages.
Caution:
MVR source ports are not recommended to be overlapped with management VLAN ports.
Immediate Leave:
Enable or disable fast leave on a port.
Enabled
: the routing device leaves the multicast group immediately after the last host leaves the
multicast group (host tracking enabled - the device keeps track of the hosts that send join messages).
Disabled
: if one host sends a leave group message, the routing device first sends a group query to
determine if another receiver responds. If no receiver responds, the routing device removes all hosts on
the interface from the multicast group.
Multicast snooping Fast Leave processing allows the switch to remove an interface from the forwarding-
table entry without first sending out group specific queries to the interface. The VLAN interface is pruned
from the multicast tree for the multicast group specified in the original leave message. Fast-leave
processing ensures optimal bandwidth management for all hosts on a switched network, even when
multiple multicast groups are in use simultaneously. This processing applies to IGMP and MLD.
Buttons
Add New MVR VLAN
– Click to add new MVR VLAN. Specify the VID and configure the new entry. Click
"Apply".
Apply
– Click to save changes.
Reset
– Click to undo any changes made locally and revert to previously saved values.
Message
:
MVR Interface Configuration Error Failure in SET MVR VLAN VID 2