Interconnection between two 3550 WS-C3550-48 switches

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Oct 6th, 2007
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please anyone can give me a hint how to interconnect two 3550 WS-C3550-48-EMI switches together by the Lan port? (not the fiber optic cable using the GBIC)

i have tried to connect a cross Cat6e cable between both but no connection is established between them. is there any command or something?

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Jon Marshall Sat, 10/06/2007 - 04:03
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No, a crossover cable should do it. Can you check the duplex and speed settings of the relevant ports.

Also is this the only connection between the 2 switches, as if there is already a connection then STP might be blocking this link.


Jagdeep Gambhir Sat, 10/06/2007 - 04:24
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In addition to what Jon said I would like you to check the status of link light i.e. if it is amber or no light at all ?

If amber then issue could be speed/duplex , port settings (access or trunk port), STP , DTP neig.

If there is no link at all then check if port is in shutdown state, make sure CAT cable or port is not bad.

Hope that helps !



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akobeissi Sat, 10/06/2007 - 04:30
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thank all you for your reply,

ill come back to you soon after checking the ports settings.


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