All MIBs › CADANT-CMTS-LAYER2CMTS-MIB › cadAgingArpCacheNotPresentMaxTime
cadAgingArpCacheNotPresentMaxTime
Module: CADANT-CMTS-LAYER2CMTS-MIB
OID (symbolic): CADANT-CMTS-LAYER2CMTS-MIB::cadAgingArpCacheNotPresentMaxTime
OID (numeric): 1.3.6.1.4.1.4998.1.1.20.1.2.10
Node type: OBJECT-TYPE
Type: Integer32
Access: read-write
Description: The maximum amount of time an ARP cache entry is in the notPresent state. When the amount of time indicated by this variable has elapsed, the next packet that arrives for an ARP cache entry in the notPresent state will cause that entry to transition to the searching state, unless cadAgingArpCacheNotPresentMinTime has not been reached yet.
What is cadAgingArpCacheNotPresentMaxTime?
This configurable timeout (in seconds, range 1-604800) specifies the maximum duration an ARP cache entry can remain in the 'notPresent' state before transitioning to 'searching' on the next packet arrival. The notPresent state indicates that a previous ARP lookup failed; this timeout prevents the CMTS from immediately re-querying for hosts that are truly offline. Cable operators tune this parameter to balance the speed of ARP recovery for temporarily unavailable hosts against unnecessary ARP query traffic.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.4998.1.1.20.1.2.10 snmpwalk -v2c -c public <target> CADANT-CMTS-LAYER2CMTS-MIB::cadAgingArpCacheNotPresentMaxTime
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.4998.1.1.20.1.2.10.1 snmpget -v2c -c public <target> CADANT-CMTS-LAYER2CMTS-MIB::cadAgingArpCacheNotPresentMaxTime.1
Set instance 1 (SNMPv2c):
snmpset -v2c -c private <target> 1.3.6.1.4.1.4998.1.1.20.1.2.10.1 i <value>
Start monitoring ARRIS/Cadant C4/E6000 CMTS (cable modem termination system) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CADANT-CMTS-LAYER2CMTS-MIB::cadAgingArpCacheNotPresentMaxTime OID value, configure state conditions and alerts, and monitor any ARRIS/Cadant C4/E6000 CMTS (cable modem termination system) from a single console.
OID Breakdown
Upper-level ancestors (10 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 |
| 1.3.6.1.4 | private | AirPair-MIB |
| 1.3.6.1.4.1 | enterprises | AirPair-MIB |
| 1.3.6.1.4.1.4998 | cadant | CADANT-PRODUCTS-MIB |
| 1.3.6.1.4.1.4998.1 | cadObjects | CADANT-PRODUCTS-MIB |
| 1.3.6.1.4.1.4998.1.1 | cadCable | CADANT-PRODUCTS-MIB |
| 1.3.6.1.4.1.4998.1.1.20 | cadLayer2 | CADANT-PRODUCTS-MIB |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.4998.1.1.20.1 | cadLayer2Mib | CADANT-CMTS-LAYER2CMTS-MIB |
| 1.3.6.1.4.1.4998.1.1.20.1.2 | cadAging | CADANT-CMTS-LAYER2CMTS-MIB |
| 1.3.6.1.4.1.4998.1.1.20.1.2.10 | cadAgingArpCacheNotPresentMaxTime | CADANT-CMTS-LAYER2CMTS-MIB |