LevelOne GEL-5261, Руководство пользователя

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Chapter 14
| Multicast Filtering
MLD Snooping (Snooping and Query for IPv6)
An IPv6 address must be configured on the VLAN interface from which the
querier will act if elected. When serving as the querier, the switch uses this IPv6
address as the query source address.
The querier will not start or will disable itself after having started if it detects an
IPv6 multicast router on the network.
◆
Robustness – MLD Snooping robustness variable. A port will be removed from
the receiver list for a multicast service when no MLD reports are detected in
response to a number of MLD queries. The robustness variable sets the number
of queries on ports for which there is no report. (Range: 2-10 Default: 2)
◆ Query Interval – The interval between sending MLD general queries.
(Range: 60-125 seconds; Default: 125 seconds)
This attribute applies when the switch is serving as the querier.
An MLD general query message is sent by the switch at the interval specified by
this attribute. When this message is received by downstream hosts, all receivers
build an MLD report for the multicast groups they have joined.
◆ Query Max Response Time – The maximum response time advertised in MLD
general queries. (Range: 5-25 seconds; Default: 10 seconds)
This attribute controls how long the host has to respond to an MLD Query
message before the switch deletes the group if it is the last member.
◆
Router Port Expiry Time – The time the switch waits after the previous querier
stops before it considers the router port (i.e., the interface that had been
receiving query packets) to have expired. (Range: 300-500 seconds;
Default: 300 seconds)
◆ MLD Snooping Version – The protocol version used for compatibility with
other devices on the network. This is the MLD version the switch uses to send
snooping reports. (Range: 1-2; Default: 2)
◆
Unknown Multicast Mode – The action for dealing with unknown multicast
packets. Options include:
■
Flood – Floods any received IPv6 multicast packets that have not been
requested by a host to all ports in the VLAN.
■
To Router Port – Forwards any received IPv6 multicast packets that have
not been requested by a host to ports that are connected to a detected
multicast router. (This is the default action.)
Web Interface
To configure general settings for MLD Snooping:
1.
Click Multicast, MLD Snooping, General.
2.
Adjust the settings as required.