Cisco Small Business SG-300
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I have a Cisco SG-300 switch that a device was working but suddenly stopped working and I believe this has something to do with the devices MAC Address...perhaps traffic is blocked in/out with the MAC. I am used to enterprise level switches and am having a hard time fin ding out if the MAC of this device is blocked. PLEASE HELP!!!???!!!
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Can you bring up the web management page of the SG-300?
If not, try to access it via CLI:
Do you believe the mac address of the switch has been duplicated.
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I have access to both the web managaement gui and the CLI. I do not believe that the MAC address of the switch has been duplicated but that could be a possibility of the device in question ( a Teradeck Encoder ). Is it possible that the encoders MAC address is blocked on the VLAN? How can I check for that?
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I'm not sure what. you can run on the SG-300. But if it take the command:
show mac address-table
this should shows you the table then you can see if there are duplicate MAC addresses in the table.You may want to just plug your encoder directly to your laptop...and see it shows up on your laptop's arp cache then compare that against output on the switch's mac address table.