Black Box LGB6026A, Management Manual

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C
HAPTER
41 | Multicast Filtering Commands
IGMP (Layer 3)
ip igmp robustval
This command specifies the robustness (expected packet loss) for this
interface. Use the
no form of this command to restore the default value.
S
YNTAX
ip igmp robustval robust-value
no ip igmp robustval
robust-value - The robustness of this interface. (Range: 1-255)
D
EFAULT
S
ETTING
2
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.