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HP FlexFabric 5950 series Configuration Manual: Configuring Static Multicast Mac Address Entries

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Configuring static multicast MAC address entries

In Layer 2 multicast, multicast MAC address entries can be dynamically created through Layer 2
multicast protocols (such as IGMP snooping). You can also manually configure static multicast MAC
address entries by binding multicast MAC addresses and ports to control the destination ports of the
multicast data.
Configuration restrictions and guidelines
When you configure static multicast MAC address entries, follow these restrictions and guidelines:
You do not need to enable IP multicast routing before this configuration.
You must specify an unused multicast MAC address when configuring a static multicast MAC
address entry. A multicast MAC address is a MAC address in which the least significant bit of
the most significant octet is 1.
You can configure static multicast MAC address entries on the specified interfaces in system
view or on the current interface in interface view.
Configuring a static multicast MAC address entry in system view
Step
1.
Enter system view.
2.
Configure a static multicast
MAC address entry.
Configuring a static multicast MAC address entry in interface view
Step
1.
Enter system view.
2.
Enter Layer 2 Ethernet
interface or Layer 2
aggregate interface view.
3.
Configure a static multicast
MAC address entry.
Setting the IGMP last member query interval
A receiver host starts a report delay timer for a multicast group when it receives an IGMP
group-specific query for the group. This timer is set to a random value in the range of 0 to the
maximum response time advertised in the query. When the timer value decreases to 0, the host
sends an IGMP report to the group.
The IGMP last member query interval defines the maximum response time advertised in IGMP
group-specific queries. Set an appropriate value for the IGMP last member query interval to speed
up hosts' responses to IGMP group-specific queries and avoid IGMP report traffic bursts.
Configuration restrictions and guidelines
When you set the IGMP last member query interval, follow these restrictions and guidelines:
The Layer 2 device does not send an IGMP group-specific query if it receives an IGMP leave
message from a port enabled with fast-leave processing.
You can set the IGMP last member query interval globally for all VLANs and VSIs in
IGMP-snooping view, for a VSI in VSI view, or for a VLAN in VLAN view. For a VSI, the
Command
system-view
mac-address
multicast mac-address
interface interface-list
vlan vlan-id
Command
system-view
interface interface-type
interface-number
mac-address
multicast mac-address
vlan vlan-id
21
Remarks
N/A
By default, no static multicast
MAC address entries exist.
Remarks
N/A
N/A
By default, no static multicast
MAC address entries exist.

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