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New Member

spanning tree ports

hi all

can anyone tell me why on my new switches, 3560's, the ports that are being blocked still light up ?

  • Other Network Infrastructure Subjects
4 REPLIES

Re: spanning tree ports

Hi Carl,

Is that a trunk port? If yes it may be blocking state for some vlans but may be fwding state for some other vlans and if it is in fwding state for one vlan even it will be showing you a green light.

Regards,

Ankur

Bronze

Re: spanning tree ports

Is the port int a blocking state or an err-disable state?

New Member

Re: spanning tree ports

LED is green when a port has link up (even if a port is in BLOCKING state. otherwise, it's Amber for error or disabled, or no LED for link down.

Re: spanning tree ports

Hi Eric,

Your statement "LED is green when port is up even if a port is BLOCKING" is not correct. If the ports are merely an access port then the blocking port will show an amber LED.

BUT yes if the port is a trunk port and there are some vlans which are in fwding state on that trunk and some vlans are in fwding state on that trunk then the trunk port will show a GREEN LED.

Regards,

Ankur

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