All MIBs › CISCO-CEF-MIB › cefPrefixExternalNRHCBytes
cefPrefixExternalNRHCBytes
Module: CISCO-CEF-MIB
OID (symbolic): CISCO-CEF-MIB::cefPrefixExternalNRHCBytes
OID (numeric): 1.3.6.1.4.1.9.9.492.1.1.2.1.16
Node type: OBJECT-TYPE
Type: Counter64
Access: read-only
Description: If CEF accounting is set to enable nonRecursive accounting (value of cefCfgAccountingMap object in the cefCfgEntry is set to enable 'nonRecursive' accounting), then this object represents the number of non-recursive bytes in the external bucket switched using this prefix.
This object is a 64-bit version of cefPrefixExternalNRBytes.
What is cefPrefixExternalNRHCBytes?
This is the 64-bit version of cefPrefixExternalNRBytes, needed to avoid wraparound on the external-bucket byte counter for prefixes carrying substantial recursively-resolved traffic. Given the same wraparound math as the other HC byte counters in this table, this object is what an admin should actually poll for accurate external-bucket byte accounting on any but the lowest-traffic prefixes. A prefix whose recursively-resolved traffic runs into the gigabytes per interval would require this 64-bit counter to avoid the accounting errors a wrapped 32-bit value would introduce.
Examples
Walk all instances (SNMPv2c):
snmpwalk -v2c -c public <target> 1.3.6.1.4.1.9.9.492.1.1.2.1.16 snmpwalk -v2c -c public <target> CISCO-CEF-MIB::cefPrefixExternalNRHCBytes
Get a specific instance (index 1):
snmpget -v2c -c public <target> 1.3.6.1.4.1.9.9.492.1.1.2.1.16.1 snmpget -v2c -c public <target> CISCO-CEF-MIB::cefPrefixExternalNRHCBytes.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 |
|---|---|---|
| 1.3.6.1.4.1.9.9.492 | ciscoCefMIB | CISCO-CEF-MIB |
| 1.3.6.1.4.1.9.9.492.1 | ciscoCefMIBObjects | CISCO-CEF-MIB |
| 1.3.6.1.4.1.9.9.492.1.1 | cefFIB | CISCO-CEF-MIB |
| 1.3.6.1.4.1.9.9.492.1.1.2 | cefPrefixTable | CISCO-CEF-MIB |
| 1.3.6.1.4.1.9.9.492.1.1.2.1 | cefPrefixEntry | CISCO-CEF-MIB |
| 1.3.6.1.4.1.9.9.492.1.1.2.1.16 | cefPrefixExternalNRHCBytes | CISCO-CEF-MIB |