All MIBs › CISCO-UNIFIED-FIREWALL-MIB › cufwL2GlobalNumBadArpResponses
cufwL2GlobalNumBadArpResponses
Module: CISCO-UNIFIED-FIREWALL-MIB
OID (symbolic): CISCO-UNIFIED-FIREWALL-MIB::cufwL2GlobalNumBadArpResponses
OID (numeric): 1.3.6.1.4.1.9.9.491.1.6.1.10
Node type: OBJECT-TYPE
Type: Counter64
Access: read-only
Description: The number of malformed ARP responses received by the firewall in trying to resolve the MAC address of the destination IP address in an incoming frame.
This counter is accumulated since the last reboot of the firewall.
What is cufwL2GlobalNumBadArpResponses?
This Counter64, in ARP Responses, counts malformed ARP responses received by the firewall while trying to resolve the MAC address for a destination IP in an incoming frame, accumulated since the last reboot. An admin uses it to detect ARP traffic on the network that's not well-formed, which could stem from misbehaving devices or attempted attacks. A rising count here alongside cufwL2GlobalNumSpoofedArpResps would warrant a closer look at the L2 segment for ARP-based mischief.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.491.1.6.1.10 snmpwalk -v2c -c public <target> CISCO-UNIFIED-FIREWALL-MIB::cufwL2GlobalNumBadArpResponses
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.491.1.6.1.10.1 snmpget -v2c -c public <target> CISCO-UNIFIED-FIREWALL-MIB::cufwL2GlobalNumBadArpResponses.1
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OID Breakdown
Upper-level ancestors (8 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 |
| 1.3.6.1.4.1.9 | cisco | CAT2600-MIB |
| 1.3.6.1.4.1.9.9 | ciscoMgmt | CISCO-SMI |
| Numeric OID | Name | Module |
|---|---|---|
| 1.3.6.1.4.1.9.9.491 | ciscoUnifiedFirewallMIB | CISCO-UNIFIED-FIREWALL-MIB |
| 1.3.6.1.4.1.9.9.491.1 | ciscoUnifiedFirewallMIBObjects | CISCO-UNIFIED-FIREWALL-MIB |
| 1.3.6.1.4.1.9.9.491.1.6 | cuFwL2FwGrp | CISCO-UNIFIED-FIREWALL-MIB |
| 1.3.6.1.4.1.9.9.491.1.6.1 | cufwL2FwGlobals | CISCO-UNIFIED-FIREWALL-MIB |
| 1.3.6.1.4.1.9.9.491.1.6.1.10 | cufwL2GlobalNumBadArpResponses | CISCO-UNIFIED-FIREWALL-MIB |