All MIBs › CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB › ctAgentDaiVlanDhcpDrops
ctAgentDaiVlanDhcpDrops
Module: CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB
OID (symbolic): CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB::ctAgentDaiVlanDhcpDrops
OID (numeric): 1.3.6.1.4.1.52.4.2.36.1.1.6.1.4
Node type: OBJECT-TYPE
Type: Counter32
Access: read-only
Description: Number of ARP packets that were dropped by DAI as there is no matching DHCP Snooping binding entry found.
What is ctAgentDaiVlanDhcpDrops?
This read-only Counter32 tracks ARP packets dropped by DAI because no matching entry was found in the DHCP Snooping binding table for that VLAN. An administrator uses this counter to catch legitimate devices that were misconfigured or never got a proper DHCP lease, causing DAI to block their ARP traffic. For example, a rising ctAgentDaiVlanDhcpDrops count after a device was statically addressed instead of using DHCP would explain why that device can no longer resolve ARP successfully.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.52.4.2.36.1.1.6.1.4 snmpwalk -v2c -c public <target> CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB::ctAgentDaiVlanDhcpDrops
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.52.4.2.36.1.1.6.1.4.1 snmpget -v2c -c public <target> CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB::ctAgentDaiVlanDhcpDrops.1
Start monitoring Enterasys/Cabletron FastPath switch (Dynamic ARP Inspection) with a free 30-day trial of IPNetwork Monitor. Create custom SNMP monitor using the CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB::ctAgentDaiVlanDhcpDrops OID value, configure state conditions and alerts, and monitor any Enterasys/Cabletron FastPath switch (Dynamic ARP Inspection) 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 |
| 1.3.6.1.4.1.52 | cabletron | Cabletron-MIB |
| 1.3.6.1.4.1.52.4 | mibs | CTRON-AP3000-MIB |
| 1.3.6.1.4.1.52.4.2 | ctronExp | CTRON-MIB-NAMES |
| 1.3.6.1.4.1.52.4.2.36 | ctDynamicArpInspectionExpMib | CTRON-MIB-NAMES |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.52.4.2.36.1 | ctFastPathDynamicArpInspectionMIB | CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB |
| 1.3.6.1.4.1.52.4.2.36.1.1 | ctAgentDaiConfigGroup | CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB |
| 1.3.6.1.4.1.52.4.2.36.1.1.6 | ctAgentDaiVlanStatsTable | CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB |
| 1.3.6.1.4.1.52.4.2.36.1.1.6.1 | ctAgentDaiVlanStatsEntry | CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB |
| 1.3.6.1.4.1.52.4.2.36.1.1.6.1.4 | ctAgentDaiVlanDhcpDrops | CT-FASTPATH-DYNAMIC-ARP-INSPECTION-MIB |