Ip igmp static-group – LevelOne GTL-2691 User Manual
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HAPTER
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| Multicast Filtering Commands
IGMP (Layer 3)
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C
OMMAND
M
ODE
Interface Configuration (VLAN)
C
OMMAND
U
SAGE
◆
The robustness value is used in calculating the appropriate range for
other IGMP variables, such as the Group Membership Interval, as well
as the Other Querier Present Interval, and the Startup Query Count
(RFC 3376).
◆
Routers adopt the robustness value from the most recently received
query. If the querier's robustness variable (QRV) is zero, indicating that
the QRV field does not contain a declared robustness value, the switch
will set the robustness variable to the value statically configured by this
command. If the QRV exceeds 7, the maximum value of the QRV field,
the robustness value is set to zero, meaning that this device will not
advertise a QRV in any query messages it subsequently sends.
E
XAMPLE
Console(config-if)#ip igmp robustness-variable 3
Console(config-if)#
ip igmp static-group
This command configures the router to be a static member of a multicast
group on the specified VLAN interface. Use the no form to remove the
static mapping.
S
YNTAX
ip igmp static-group group-address [source source-address]
no ip igmp static-group
group-address - IP multicast group address. (The group addresses
specified cannot be in the range of 224.0.0.1 - 239.255.255.255.)
source-address - Source address for a multicast server transmitting
traffic to the corresponding multicast group address.
D
EFAULT
S
ETTING
None
C
OMMAND
M
ODE
Interface Configuration (VLAN)
C
OMMAND
U
SAGE
◆
Group addresses within the entire multicast group address range can
be specified with this command. However, if any address within the
source-specific multicast (SSM) address range (default 232/8) is
specified, but no source address is included in the command, the
request to join the multicast group will fail unless the next node up the
reverse path tree has statically mapped this group to a specific source
address. Also, if an address outside of the SSM address range is
specified, and a specific source address is included in the command, the