Start with the recommendations from your SNMP Client (i.e. Open View,
NetView, Concord, Tavve). I believe Concord NetHealth recommends 15 minute
intervals. This really is miniscuel traffic the normal 10/ 100 LAN/ or 768
Kbps Frame/ OC3 WAN circuit. Support information from your SNMP client
should give you the Pro's & Con's to answer these questions (even influence
growth changes). The ratios are based on very calculated bandwidth, # of
devices, & server build stats. I work @ a very established NOC & we value
the polling almost more than any other traffic itself. This does represent
your eyes on the network.. while customer phone calls & RMON probes are the
ears.
All the best !!!
Phil
----- Original Message -----
From: "Hans Schimek" <[EMAIL PROTECTED]>
To: "cisco" <[EMAIL PROTECTED]>
Sent: Saturday, January 20, 2001 10:34 AM
Subject: SNMP-queries ???
> i would like to configure SNMP on our network. but
> reduce network traffic for snmp queries as far as possible.
> i did this on a testrouter so far.
> but debugging snmp packets - i noticed that every 2 seconds a query
> is sent - i attached an extract of the log-file.
> our network now has about 40-50 routers - so if i will enable
> snmp on all of these devices - that would result in a heavy network load,
> isn`t it-
> but so far - we do need such a strictly network mangagement- for now we do
> polling every 40 minutes -
> but when there is an outage on one of those devices, the customer notices
it
> prior to our
> NOC.
> so i configured snmp traps - which works fine - in an acceptable time -
but
> THAT didn`t reduce
> my snmp queries floods, either.
>
> so please could anyone give me an advice, how i could reduce these snmp
> queries.
>
>
>
> thanx
> hans
>
>
> 4w4d: SNMP: Get request, reqid 98419, errstat 0, erridx 0
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.10.3 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 98419, errstat 2, erridx 4
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.10.3 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 426099, errstat 0, erridx 0
> ifEntry.12.3 = NULL TYPE/VALUE
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 426099, errstat 2, erridx 1
> ifEntry.12.3 = NULL TYPE/VALUE
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 98419, errstat 0, erridx 0
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 98419, errstat 2, erridx 4
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 491635, errstat 0, erridx 0
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 491635, errstat 2, erridx 1
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 98419, errstat 0, erridx 0
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 98419, errstat 0, erridx 0
> sysUpTime.0 = 284539442
> ifEntry.5.3 = 2048000
> sysUpTime.0 = 284539442
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 557171, errstat 0, erridx 0
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 557171, errstat 2, erridx 1
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 622707, errstat 0, erridx 0
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 622707, errstat 2, erridx 1
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 98420, errstat 0, erridx 0
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.10.3 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 98420, errstat 2, erridx 4
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.10.3 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 426100, errstat 0, erridx 0
> ifEntry.12.3 = NULL TYPE/VALUE
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 426100, errstat 2, erridx 1
> ifEntry.12.3 = NULL TYPE/VALUE
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 98420, errstat 0, erridx 0
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 98420, errstat 2, erridx 4
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.11.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 491636, errstat 0, erridx 0
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 491636, errstat 2, erridx 1
> ifEntry.13.3 = NULL TYPE/VALUE
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 98420, errstat 0, erridx 0
> sysUpTime.0 = NULL TYPE/VALUE
> ifEntry.5.3 = NULL TYPE/VALUE
> sysUpTime.0 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 98420, errstat 0, erridx 0
> sysUpTime.0 = 284539973
> ifEntry.5.3 = 2048000
> sysUpTime.0 = 284539973
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 557172, errstat 0, erridx 0
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 557172, errstat 2, erridx 1
> ifEntry.14.3 = NULL TYPE/VALUE
> ifEntry.15.3 = NULL TYPE/VALUE
> Testrouter#
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54
> 4w4d: SNMP: Packet received via UDP from 213.164.0.54 on Serial0/0:0
> 4w4d: SNMP: Get request, reqid 622708, errstat 0, erridx 0
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Response, reqid 622708, errstat 2, erridx 1
> ifEntry.15.3 = NULL TYPE/VALUE
> 4w4d: SNMP: Packet sent via UDP to 213.164.0.54undebug all
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