All MIBs › PTOPO-MIB › ptopoConfigMaxHoldTime
ptopoConfigMaxHoldTime
Module: PTOPO-MIB
OID (symbolic): PTOPO-MIB::ptopoConfigMaxHoldTime
OID (numeric): 1.3.6.1.2.1.79.1.3.2
Node type: OBJECT-TYPE
Type: Integer32
Access: read-write
Description: This object specifies the desired time interval for which
an agent will maintain dynamic ptopoConnEntries.
After the specified number of seconds since the last time an
entry was verified, in the absence of new verification
(e.g., receipt of a topology protocol message), the agent
shall remove the entry. Note that entries may not always be
removed immediately, but may possibly be removed at periodic
garbage collection intervals.
This object only affects dynamic ptopoConnEntries, i.e. for
which ptopoConnIsStatic equals 'false(2)'. Static entries
are not aged out.
Note that dynamic ptopoConnEntries may also be removed by
the agent due to the expired timeliness of learned topology
information (e.g., timeliness interval for a remote port
expires). The actual age-out interval for a given entry is
defined by the following formula:
age-out-time =
min(ptopoConfigMaxHoldTime,
What is ptopoConfigMaxHoldTime?
This read-write Integer32 (1..2147483647 seconds), defaulting to 300, specifies, per its source description, how long the agent will keep a dynamic (non-static) topology connection entry without re-verification before removing it, computed per-entry as the minimum of this value and any entry-specific hold-time set by the discovery algorithm itself. Admins raise or lower this to control how quickly stale neighbor information disappears from the topology table versus how tolerant the table is of a temporarily quiet or unresponsive discovery protocol. For example, lowering this from the 300-second default to 120 would cause dynamic entries to age out faster if a neighboring device stops sending topology protocol updates.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.2.1.79.1.3.2 snmpwalk -v2c -c public <target> PTOPO-MIB::ptopoConfigMaxHoldTime
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.2.1.79.1.3.2.1 snmpget -v2c -c public <target> PTOPO-MIB::ptopoConfigMaxHoldTime.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.2.1.79.1.3.2.1 i <value>
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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 | APERTUS-NPG-MIB |
| 1.3.6.1.2.1 | mib_2 | AXON-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.2.1.79 | ptopoMIB | PTOPO-MIB |
| 1.3.6.1.2.1.79.1 | ptopoMIBObjects | PTOPO-MIB |
| 1.3.6.1.2.1.79.1.3 | ptopoConfig | PTOPO-MIB |
| 1.3.6.1.2.1.79.1.3.2 | ptopoConfigMaxHoldTime | PTOPO-MIB |