With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cefPrefixExternalNRHCBytes
CISCO Express Forwarding Prefix External NRHC Bytes
1.3.6.1.4.1.9.9.492.1.1.2.1.16
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.
Back to CISCO-CEF-MIB MIB page.
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