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ScreenOS: What are the 64-bit counters for, displayed when performing an SNMPWALK?

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Article ID: KB7812 KB Last Updated: 14 May 2009Version: 4.0
Summary:
When performing SNMPWALK to obtain SNMP Interface counters, a set of 64-bit counters is displayed. What are these counters for?
Symptoms:

Solution:
The SNMP counters are displayed as 32 bit in/out packets and in/out octet counters per interface.  Beginning with ScreenOS 5.3.0, additional 64-bit counters were introduced for interface hardware counters as it can be seen in the example below:
fw-> get count stat interface eth0/0

[output omitted]

Hardware 64-bit counters for interface ethernet0/0:
in bytes                     89055098 |  out bytes                      275520
in ucast                       307088 |  out ucast                        2268
in mcast                            0 |  out mcast                           0
in bcast                            0 |  out bcast                           0


[output omitted]

It is possible to monitor these via SNMP using the Interface Group MIB from RFC2863, which includes the “High Capacity” groups. (e.g. “in bytes” from output above corresponds to high capacity counter "ifHCInOctets”).

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