igmpSnoopRobustness
A3COM0073IGMP-SNOOP ·
.1.3.6.1.4.1.43.10.37.1.2
Object
scalar
mandatory
r/w
Integer32
This enables IGMP tuning on a lossy network if a switch is the
querier. On such a network it may be increased. It is set stack-wide.
The default value is 1. The range is 1 to 2.
There could be a Low(1) or High(2) setting.
It is used to derive a timeout interval. If no IGMP v2 queries
are heard on this VLAN within this timeout interval, the local
switch will take over the querier role in the VLAN, assuming the
switch has no router ports:
Other Switch Querier Present Interval =
(Robustness x General Query Interval) +
1/2(General Max Query-Response Interval) = 65 seconds by default
The Robustness is also used to derive another interval. The amount
of time that must pass before the querying switch decides that there
are no more hosts listening to a particular multicast in seconds:
Group Membership Interval =
(Robustness x General Query Interval) +
General Max Query-Response Interval = 70 seconds by default.
Context
- MIB
- A3COM0073IGMP-SNOOP
- OID
.1.3.6.1.4.1.43.10.37.1.2- Type
- scalar
- Access
- readwrite
- Status
- mandatory
- Parent
- igmpSnoop
- Siblings
- 10
Syntax
Integer32
Values & Constraints
Object Constraints
range: 1-2
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| igmpSnoopEnabled mandatory Enables/disables IGMP Snooping on this device. It is set stack-wide.
The defaule value is True. The range is True(1) or False(2). | scalar | TruthValue | .1.3.6.1.4.1.43.10.37.1.1 |
| igmpQueryEnabled mandatory Enabled/Disables IGMP Queries for this device.
The default value is True. The range is True(1) or False(2). | scalar | TruthValue | .1.3.6.1.4.1.43.10.37.1.10 |
| igmpQueryIpAddress mandatory This is the IP address used in IGMP Queries. The default value
is the management IP address. Since the root query device is
determined by the lowest IP address, you can vary th… | scalar | RFC1155-SMIIpAddress | .1.3.6.1.4.1.43.10.37.1.11 |
| igmpSnoopLeaveEnabled mandatory Enables/disables the processing of IGMP v2 leave messages stack-wide.
The default value is True(1). The range is True(1) or False(2). | scalar | TruthValue | .1.3.6.1.4.1.43.10.37.1.3 |
| igmpSnoopQueryTimeout mandatory The frequency at which IGMP general query packets are
transmitted on this VLAN by the querying switch in seconds.
So this is the time between general periodic queries being
sent o… | scalar | Integer32 | .1.3.6.1.4.1.43.10.37.1.4 |
| igmpSnoopQueryMaxResponseTime mandatory The maximum query response time in seconds advertised in IGMP v2
queries on this VLAN if the switch is the querier. Smaller values
allow a switch to prune groups faster. So it is … | scalar | Integer32 | .1.3.6.1.4.1.43.10.37.1.5 |
| igmpSnoopLastMemberQueryTimeout mandatory A timeout interval in seconds. Maximum response time inserted
into the IGMP group specific queries sent in response to an
IGMP Leave by a querying switch. It is also the time bet… | scalar | Integer32 | .1.3.6.1.4.1.43.10.37.1.6 |
| igmpSnoopLastMemberQueryCount mandatory The number of group specific queries sent before the querying switch
decides that there are no more hosts listening to a particular group
multicast address. It is set stack-wide.
… | scalar | Integer32 | .1.3.6.1.4.1.43.10.37.1.7 |
| igmpSnoopRouterPortRefreshTimeout mandatory A timeout interval in seconds. The maximum time that
should elapse between multicast
router protocol PDUs on a port in the VLAN.
The default is 100 seconds and the range is from 7… | scalar | Integer32 | .1.3.6.1.4.1.43.10.37.1.8 |
| igmpSnoopVLANTable mandatory The (conceptual) table listing the VLANs on which IGMP
Snooping is enabled. | table | - | .1.3.6.1.4.1.43.10.37.1.9 |