All MIBs › IGMP-STD-MIB › igmpCacheVersion1HostTimer
igmpCacheVersion1HostTimer
Module: IGMP-STD-MIB
OID (symbolic): IGMP-STD-MIB::igmpCacheVersion1HostTimer
OID (numeric): 1.3.6.1.2.1.85.1.2.1.8
Node type: OBJECT-TYPE
Type: TimeTicks
Access: read-only
Description: The time remaining until the local router will assume that there are no longer any IGMP version 1 members on the IP subnet attached to this interface. Upon hearing any IGMPv1 Membership Report, this value is reset to the group membership timer. While this time remaining is non-zero, the local router ignores any IGMPv2 Leave messages for this group that it receives on this interface.
What is igmpCacheVersion1HostTimer?
This timer measures how many seconds remain until the local IGMP router will assume there are no more IGMP version 1 hosts on the interface, at which point it will ignore version 2 Leave messages and use faster v3-style pruning. While this timer is non-zero, the router remains in v1 compatibility mode for that group. An operator monitoring multicast health would check this to understand when legacy v1 host compatibility ends and faster convergence resumes.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.85.1.2.1.8 snmpwalk -v2c -c public <target> IGMP-STD-MIB::igmpCacheVersion1HostTimer
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.85.1.2.1.8.1 snmpget -v2c -c public <target> IGMP-STD-MIB::igmpCacheVersion1HostTimer.1
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OID Breakdown
Upper-level ancestors (6 from the standard OID tree / other modules)
| Numeric OID | Name | Module |
|---|---|---|
| 1 | iso | LANART-AGENT |
| 1.3 | org | AirPair-MIB |
| 1.3.6 | dod | AirPair-MIB |
| 1.3.6.1 | internet | AirPair-MIB |
| 1.3.6.1.2 | mgmt | AXON-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.85 | igmpStdMIB | IGMP-STD-MIB |
| 1.3.6.1.2.1.85.1 | igmpMIBObjects | IGMP-STD-MIB |
| 1.3.6.1.2.1.85.1.2 | igmpCacheTable | IGMP-STD-MIB |
| 1.3.6.1.2.1.85.1.2.1 | igmpCacheEntry | IGMP-STD-MIB |
| 1.3.6.1.2.1.85.1.2.1.8 | igmpCacheVersion1HostTimer | IGMP-STD-MIB |