Re: need help on the following interview questions

1) TCN BPDU is generated by a topology change and sent north bound towards
the root bridge to notify the root of the topology change. The root then
generates a configuration change BPDU that is used to tell every other
bridge of the change.

2) If a switch receives a frame with a destination MAC address that is not
in it's bridge forwarding table, the switch "floods" the frame out all ports
and then monitors traffic to determine what port responded to the flooded
frame. I think from the switch perspective, flooding and broadcast are the
same. However to answer the question, perhaps the differences of purpose
should be noted.

3) Agreed

Thanks
MikeN

On Mon, Dec 20, 2010 at 2:21 PM, ehtesham ali <conect2ehtesham_at_gmail.com>wrote:

> Hi group ,
>
> 1) what happens when a switch receives a TCN BPDU'S ?
> 2) Difference between flooding and broadcasting ?
> 3) does a cisco 3750 switch supports MLS and MQC QOS ?
>
> my answers :
> 1) Receiving switch replicates the TCN bpdu and sends it out of its root
> port , (after acknowledging the downstream bridge ) until the root bridge
> is
> hit by TCN bpdu
>
> 2) one and the same
> 3) yes
>
> plz give me precise answers for the above questions , and more detailed
> answer to q 1 he was referring to mac flushing..
>
> Regards
>
>
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Received on Mon Dec 20 2010 - 15:27:44 ART