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11987 Views 11 Replies Latest reply: Jun 4, 2011 2:19 AM by Andrea Consadori RSS
Andrea Consadori ZenossMaster 863 posts since
Feb 11, 2008
Currently Being Moderated

Aug 12, 2010 3:05 AM

Remote interface graph draw wrong values if snmp cicle have a high value

Hi,

it's a problem i've had in 2.5.2 too but i never understand what was due to.

 

this is my problem

 

this graph is taken form a server that i reach on vpn ipsec

interfacermote.png

1- there's a lof of gaps between value (while i never loose ping)

2- value is wrong... this interface has a constant flow of 300mbits (it's a tvcc server)

 

i see that if i look in a local server (on zenoss lan)

 

serverlocal.png

 

both server has a giga interface so it's not a 32 or 64 bit counter (i check the 64bit oid and i've no reply to snmp v2 query).

 

so what's the problem?

 

i see that interface graph datasource have a "derive" value... the problem can be that the remote data collection is too slow and interface graph make a derive value between an high value (300) and a zero value and give me this strage graph?

 

i'm sure of effective network usage because windows server task manager tell me that giga interface is used at 35%

 

i hope someone can give me a hint to understand where's the problem.

 


Thanks

Andrea Consadori

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