[nsp] looking for a 12.0.nS recommendation

Iva Cabric ivac+cisco-nsp at mail.iskon.hr
Wed Mar 19 12:24:05 EST 2003

On Wed, Mar 19, 2003 at 01:42:54AM -0800, Joe Wood wrote:
> I've heard that the IOS 64-bit counters are not true 64 bit,
> rather two 32 bit counters thrown together. Can anyone confirm this?

I don't know about internal representation of counters inside IOS
(probably they are two 32-bit words), but there are two ways to
represent 64-bit counter via SNMP:

- 64-bit counters implemented as a single object with the SNMP Counter64
  data type using the SNMPv2c protocol
- 64-bit counters implemented as two 32-bit objects with the SNMP
  Counter (or Counter32) data type using the SNMPv1 and SNMPv2c protocols

(taken from http://www.snmpinfo.com/CounterTest/index.html)

Cisco, obviously, uses first approach.

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