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IGMP snooping
IGMP Snooping command reference
iMG/RG Software Reference Manual (IGMP)
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3.1.5.1.12 BRIDGE SET IGMPSNOOP MCASTROUTERTIMEOUT
Syntax
BRIDGE SET IGMPSNOOP MCASTROUTERTIMEOUT < mcastroutertimeout >
Description
This command sets the value for the multicast router time out interval which is the time
a dynamic multicast router interface remains an upstream interface after receiving an
IGMP Query with a non-zero source IP address. If an IGMP Query with a non-zero
source IP address is not received on the dynamic multicast router interface during this
time interval, the dynamic multicast router interface is reverted back to a downstream
interface.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop mcastroutertimeout 500
See also
BRIDGE LIST IGMPSNOOP
3.1.5.1.13 BRIDGE SET IGMPSNOOP MODE
Syntax
BRIDGE SET IGMPSNOOP MODE { Proxy | Snooponly }
Description
This command specifies the mode of operation for the IGMP process.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop mode proxy
See also
BRIDGE SHOW
Option
Description
Default value
mcastroutertimeout
The aging time for multicast interfaces in seconds.
Valid range is 1 to 65535
400
Option
Description
Default value
Proxy |
Snooponly
When in snooponly mode, the IGMP process samples
IGMP packets without interference, using the data to
trunk multicast streams.
When in proxy mode,
the IGMP process intercepts all
IGMP packets and re-sources and times the reports
and queries base on IGMP configuration.
Snooponly
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3.1.5.1.14 BRIDGE SET IGMPSNOOP NETINTERFACE
Syntax
BRIDGE SET IGMPSNOOP NETINTERFACE <ip interface name>
Description
This command specifies the IP interface from which IGMP proxy messages should be
sourced.
Uses IP address 0.0.0.0 if not specified.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop netinterface ip0
See also
IP LIST INTERFACES
3.1.5.1.15 BRIDGE SET IGMPSNOOP QUERYINTVL
Syntax
BRIDGE SET IGMPSNOOP QUERYINTVL < queryintvl >
Description
This command sets the value for the query interval.
The Query Interval is the time
between General Queries sent by the proxy Querier.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop queryintvl 200
See also
BRIDGE SHOW
BRIDGE SET IGMPSNOOP QUERYRESPONSEINTVL
3.1.5.1.16 BRIDGE SET IGMPSNOOP QUERYRESPONSEINTVL
Syntax
BRIDGE SET IGMPSNOOP QUERYRESPONSEINTVL < queryresponseintvl
>
Option
Description
Default value
Name
A name that identifies an existing ip interface as seen
with ip list interfaces
ip0
Option
Description
Default value
Queryintvl
The query interval value in seconds.
Query interval
cannot be less than or equal to the query response
interval. Valid range is 2 to 255
125
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Description
This command sets the value for the query response interval.
The Max Response Time
inserted into the periodic General Queries.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop queryresponseintvl 20
See also
BRIDGE SET IGMPSNOOP QUERYINTVL
3.1.5.1.17 BRIDGE SET IGMPSNOOP ROBUSTNESSVAR
Syntax
BRIDGE SET IGMPSNOOP ROBUSTNESSVAR < robustnessvar >
Description
This command sets the value for the network robustness, allowing tuning based upon
expected packet loss on the network.
This robustness value will modify the time, in
proxy mode only, between the leave on the LAN facing network and the leave being sent
on the WAN facing network will be robustness times the lastmemberqueryintvl. It func-
tions by forcing multiple IGMP Packet transmissions.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop robustnessvar 3
3.1.5.1.18 BRIDGE SET IGMPSNOOP SECURITY
Syntax
BRIDGE SET IGMPSNOOP SECURITY <enable|disable>
Description
This command enabled or disables IGMP Security for the device. When enabled - all
IGMP messaging is validated against the MAC Addresses in the IGMP Security table to
ensure that they are authorized to receive video service..
Option
Description
Default value
queryrespon-
seintvl
The query response interval value in seconds.
Query
response interval cannot be greater than or equal to
the query interval. Valid range is 1 to 254.
3
Option
Description
Default value
robustnessvar
The the robustness variable value is a retry count for
IGMP packet transmissions. Valid range is 2 to 255.
2
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Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop security enable
See also
BRIDGE LIST IGMPSNOOP SECURITY
3.1.5.1.19 BRIDGE SET IGMPSNOOP AUTOLEARNING
Syntax
BRIDGE SET IGMPSNOOP SECURITY AUTOLEARNING <enable|disable>
Description
This command activates or deactivates the ability of the security mechanism to learn
MAC addresses. When the system starts - only configured MAC addresses are populated
in the list of allowed MAC addresses. If AutoLearning is enabled, as new MAC addresses
are encountered, they are added to the list of valid MAC addresses - until the table has
reached the maximum size allowed. Once in the table, they cannot be removed, unless
the system is restarted. Once in the table - and the config is saved, they cannot be
removed except by a manual action.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop security autolearning enable
See also
BRIDGE LIST IGMPSNOOP SECURITY
3.1.5.1.20 BRIDGE SET IGMPSNOOP SECURITY MAXMACNUMBER
Syntax
BRIDGE SET IGMPSNOOP SECURITY MAXMACNUMBER < num_macs >
Option
Description
Default value
enable/disable
Activates or deactivates the service
disable
Option
Description
Default value
enable/disable
Activates or deactivates the service
disable
Option
Description
Default value
enable/disable
Activates or deactivates the autolearning feature
disable
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Description
This command sets the limit on the number of MAC addresses that the IGMP Securitiy
feature will allow to be populated in it’s internal table - and thus the number of devices
that can get video service..
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop security maxmacnumber 3
See also
BRIDGE LIST IGMPSNOOP SECURITY
3.1.5.1.21 BRIDGE SET IGMPSNOOP VLAN
Syntax
BRIDGE SET IGMPSNOOP VLAN < vlan_id >
Description
This command restricts all IGMP messaging to the specified VLAN. If IGMP messages are
received on a different VLAN then they are forwarded as normal messages.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Example
--> bridge set igmpsnoop vlan 313
See also
BRIDGE LIST IGMPSNOOP
3.1.5.1.22 BRIDGE SET IGMPSNOOP V1TIMER
Syntax
BRIDGE SET IGMPSNOOP V1TIMER < v1timer >
Description
This command sets the value for the v1 timer. The Version 1 Router Present Timeout is
how long a host must wait after hearing a Version 1 Query before it may send any IGMP
version 2 messages.
Options
The following table gives the range of values for each option that can be specified with
this command and a default value (if applicable).
Option
Description
Default value
num_macs
The maximum number of MACs that IGMP Security is
allowed to be configured with - or learn..
5
Option
Description
Default value
vlan_id
The integer number of the VLAN - from 1 to 4094.
No restrictions
(-1)

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