Re: [Devmon] input discard rate

[Taylor L. <tl...@tr...>]

Sure, here they are, but they haven't been touched...

Oids
ifName          : .1.3.6.1.2.1.31.1.1.1.1       : branch
ifAlias         : .1.3.6.1.2.1.31.1.1.1.18      : branch
ifInOctets      : .1.3.6.1.2.1.2.2.1.10         : branch
ifInDiscards    : .1.3.6.1.2.1.2.2.1.13         : branch
ifOutOctets     : .1.3.6.1.2.1.2.2.1.16         : branch
ifOutDiscards   : .1.3.6.1.2.1.2.2.1.19         : branch

transforms
# Get bit speed delta (so we dont have to provide custom delta limit)
ifInOps         : DELTA         : {ifInOctets}
ifOutOps        : DELTA         : {ifOutOctets}
# Convert our octets delta into bits per second
ifInBps         : MATH          : {ifInOps} x 8
ifOutBps        : MATH          : {ifOutOps} x 8
# Do delta transform on all error counters
ifInDps         : DELTA         : {ifInDiscards}
ifOutDps        : DELTA         : {ifOutDiscards}
# Perform error to traffic percentage calculations
ifInDscPct      : MATH          : ({ifInDps} / {ifInBps}) x 100
ifOutDscPct     : MATH          : ({ifOutDps} / {ifOutBps}) x 100
# Create an alias in a bracketed box, or nothing if alias is blank
ifAliasBox      : REGSUB        : {ifAlias} /(\S+.*)/ [$1]/

messages
<b>Discards:</b>
TABLE:
Ifc name|Discards in|Discard rate in|Discard load in|Discards out|Discard rate out|Discard load out
{ifName}{ifAliasBox}|{ifInDiscards}|{ifInDps}|{ifInDscPct.color}{ifInDscPct}%{ifInDscPct.errors}|{ifOutDiscards}|{ifOutDps}|{ifOutDscPct.color}{ifOutDscPct}%{ifOutDscPct.errors}

Note:
Error rates are per second.
Load percentages are based on error/bit ratio.


________________________________________
From: dev...@li... [mailto:dev...@li...] On Behalf Of Guðmundur Örn Ingvarsson
Sent: Thursday, May 08, 2008 10:47 AM
To: 'dev...@li...'
Subject: Re: [Devmon] input discard rate

We're monitoring a few 6509 but I can't say we've seen numbers like that one.
Can you include the oids, transforms and messages files just if there is anything spooky in there?



From: dev...@li... [mailto:dev...@li...] On Behalf Of Taylor Lewick
Sent: 8. maí 2008 15:11
To: dev...@li...
Subject: [Devmon] input discard rate

Is anyone out there using devmon to monitor a 6509?  If so, do you ever get messages about a link having a very high input discard rate?

And if so, what does that mean?  I can see output discard counters on the switch by running show int gi#/# counter errors, but I don't see any counters for input-discards, only output-discards.
Also, if you look below, the Discards In reports as 0, yet the rate in reports as 72796055, and a 4386%, so I think something is wrong with the way devmon is calculating the discard load in.  

Ifc         name                            Discards in        Discard rate in   Discard load in   Discards out      Discard rate out             Discard load out
Gi#/#    [*** some link ***]           0                      72796055.85      4386.49%                      0                      0.00                              0.00%

And the rate we are getting is unreal (see above).  We aren't hearing of any problems on this link, yet devmon is reporting.  This happens about once an hour and lasts about for one poll cycle, i.e. one minute.



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