[mrtg] ifHighSpeed on 100Mbps

[Pavel Ruzicka]

Hello,

I read CHANGELOG for MRTG 2.10.16pre and there are this information:
--------------------------------------------------
From: Mike Nealon <mnealon location conversent.com>
* in cfgmaker When using SNMP v2 only use ifHighSpeed for 100Meg and up 
interfaces, otherwise use ifSpeed.
--------------------------------------------------

I found interesting information in Cisco document:
--------------------------------------------------
     Correspondingly, Cisco IOS Software does not support 64-bit counters for 
interface speeds of less than 20Mbps. This means that 64-bit counters are not 
supported on 10Mb Ethernet ports, only 100 Mb Fast-Ethernet and other high 
speed ports support 64-bit counters.
--------------------------------------------------

Is this some standard or RFC, or something like this?
How about for example E3 interfaces?
I know, this is not big problem, because with 5 minutes interval problems 
begins about 112Mbps...

Best regards,

Pavel Ruzicka

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