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what to look for to confirm network problem?

my network has seemed to get significantly slower recently. I want to find out how to interpret the statistics that are usually available via several means. I plan on implementing a distribution layer switch soon so I guess that would be a good place to monitor for errors... what should I look for?

using IOS at switch?

using netstat -s in xp or win2000?

I get tons of stats from the netstat -s command but I'm not sure how to interpret them. I would like to know how to do this from the netstat command and also how to do the same via cisco IOS from my distribution layer switch (that I don't have yet.. so I can't tell you the version of IOS)

any input is appreciated. Thanks.


Re: what to look for to confirm network problem?

You can use MRTG. MRTG can be used to obtain the interface traffic stats on Cat 4k, this was set-up to monitor the vlan interface for stats via snmp and also Netflow, Netflow provides traffic accounting per interface, but it operates only at layer 3.Check for Netflowin the following URL

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