About bradleycollins

bradleycollins · 11-24-2014

I am attempting to communicate with a Modicon PLC CRP module (CRP 31200 for Ethernet Remote IO) via our cisco network. I have found that when the PLC module is connected to my 2960-X it will not allow the arp broadcasts to pass. If the PLC module i...

bradleycollins · 06-08-2015

Yeah... the 'mini switches' are not ideal. But it worked out from me because i have them in almost every PLC panel anyway for other reasons.However, all of my drops are over 300 feet away from eachother. If yours are all centrally located to the ne...

bradleycollins · 06-08-2015

Yes.... The problem is the internal interface (00:00:54:1A:67:94 for me) is actually tagged with VLAN1. The physical interface traffic is untagged. Since Cisco automatically assumes that VLAN 1 is untagged only that traffic ends up going nowhere sin...

Member Since	‎11-24-2014 06:26 AM
Date Last Visited	‎04-06-2018 12:27 AM
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Cannot establish layer 2 communication

Yeah... the 'mini switches'

Yes.... The problem is the