
IP Multicasting create ip igmp destination 51
create ip igmp destination
Syntax CREate IP IGMP DEStination=ipaddress INTerface=interface
[POrt={ALL|port-list}]
where:
■ ipaddress is an existing IGMP group destination address.
■ interface is the name of the interface over which multicast data is
forwarded.
■ port-list is a port number, a range of port numbers (specified as n-m), or a
comma-separated list of port numbers and/or ranges. Port numbers start
at 1 and end at m, where m is the highest numbered Ethernet port,
including uplink ports.
Description This command creates a static multicast association to forward multicast data
from a multicast group to one or more ports.
The destination parameter specifies the IP address to which multicast group
address data is forwarded.
The interface parameter specifies the interface over which multicast data is
forwarded.
The static IGMP association identified by the destination and interface
parameters must not already exist.
The port parameter specifies the ports through which multicast data is
forwarded. If any of the ports specified in the port list are not valid ports for
the specified interface, an error message is displayed. An empty port list can be
specified by giving no value to the port parameter. Ports may be added later
with the add ip igmp destination command.
If all is specified or if the port parameter is not entered, all ports that belong to
that interface forward multicast data.
Since static IGMP associations are identified by the combination of destination
and interface, one destination or interface may belong to several different
associations. Also, ports may belong to several associations if there are
overlapping VLANs. There is no conflict with existing standard (dynamic)
IGMP hosts: if a new static association’s port already has a dynamic IGMP
host, the new static entry replaces it.
IGMP destinations added with this command never time out. They can be
removed with the destroy ip igmp destination command.
Examples To forward multicast data to 224.1.2.3 out ports 1 to 4 using vlan1, use the
command:
cre ip igmp des=224.1.2.3 int=vlan1 po=1-4
Related Commands add ip igmp destination
delete ip igmp destination
destroy ip igmp destination
show ip igmp
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