We have seen problems with SNMP queries, where the CPU on a Cisco 7206 would spike from 25 to 90%. It was, however, when we polled huge ip accounting tables. With regular traffic-in-interface queries, it is hard to believe it would impact the CPU noticeably.
Fernando ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sean Cheesman Sent: Thursday, October 09, 2008 9:47 AM To: [email protected] Subject: Re: [mrtg] Can Mrtg cause a Router to crash because of the snmp querys? If your network is so overloaded that a SNMP query per device every 5 minutes causes an implosion, I'd skip the MRTG and re-engineer your network! SNMP is very low priority and should in no way collapse your network. On 10/9/08 9:31 AM, "Jack Bauguer" <[EMAIL PROTECTED]> wrote: Hi, Im trying to build a traffic analyzer based on Mrtg here for my company, (10 big routers 80 switches 80 servers Cisco/Nortel). There was an argument about creating this Mrtg-Server, some people claim it would be suicidal, because many of the routers and switches operates with heavy traffic and cpu load (about 75-85%) and querying these elements every 5 minutes would collapse the network. Can somebody give me some feedback on this, I personally dont believe that querying through snmp every 5 minutes can cause such damage on the network, even if they are on high capacity, i think maybe it could cause a small delay on the query but nothing else, right?. I have allready worked in a smaller enviourment and had no problems, but I need some technical arguments to convince these guys, any ideas? regards. JB
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