I moved from 2500 series routers to a switched network using a Catalyst 3750 and 3560 switches over the course of the last year. In my routed network I used MRTG to monitor traffic on my interfaces. In my switched network environment I have not been able to find a free or low cost tool that will monitor VLAN traffic. Any suggestions?
Vlans on 3560s, 3750s and 3550s do not show stats. The packets are forwarded with the ASIC chips and do not cross the CPU for actual processing. To actually see the traffic you will need to turn off CEF, which decrases the performance significantly (not recommended, see links above).
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
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