For those who have been playing with GNS3 1.0, a few tips that might make your experience little easier…

%AMDP2_FE-6-EXCESSCOLL:Ethernet0/2 TDR=0, TRC=0
This command annoys you when you start switching. Its basically the same syslogs GNS3 pre 1.0 shot at us saying “invalid duplex/speed”. Unfort the fix isnt as straight forward as we did in the past. I found an article online on how to hide this error.

logging discriminator EXCESS severity drops 6 msg-body drops inc EXCESSCOLL
logging buffered 50000
logging console discriminator EXCESS

William Zambrano

William Zambrano

NYC networkers is run by William Zambrano, a passionate network engineer who has been in the IT industry for eight years who posts up blog articles, YouTube videos, and holds events in the NYC area. He lives in Queens, New York and has consulted in various different companies in the NY area. Previously William worked as a Cisco Certified Systems Instructor (CCSI) but now currently works for Arista Networks serving as a Systems Engineer. William can be reached by email at

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