Switch at first time

Unanswered Question
Oct 1st, 2008
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Hi all,


one small clarification,


New switch how it is learning MAC address of the hosts for the first time, whether


Sending broadcast to all hosts and receiving their MAC addresses or


When one host is trying to communicate with other host, it is adding MAC address to MAC address table?


Thanks

Ramesh Kumar

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satish_zanjurne Wed, 10/01/2008 - 06:36
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1.First time when it receives a frame on a port, it associate the Source MAC address of that frame to the port on which frame is received.


2.Then it broadcast that frame.


3.Some other hosts replies to that frame on another port, switch associates source MAC address of that frame with the that port


So you are right when it is trying to communicate with other hosts it adds the SOURCE MAC address of that frame into mac-address-table, which you can see using


"show mac-address-table" command


HTH..rate if helpful..

nramesh25 Wed, 10/01/2008 - 06:59
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So, initially switch will not send any broadcast to connected hosts right?

Switch will not know about any hosts and their MAC address. Is it right?

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