Solved: STP functionality

pcantoni · ‎10-31-2007

Hi everybody,

only a doubt about STP (802.1d).

Suppose to have a simple loop between three switches (in purely daisy chain).

What if one of them (say SWA) doesn't support STP?

Can I use STP nevertheless ?

The other two switch are able to manage the port block/forwarding algorithm, so mantaining connectivity without looping ?

Thank you in advance

Kevin Dorrell · ‎10-31-2007

It depends on whether the third-party switch passes the BPDUs through transparently. If it does so, the STP will block a port to prevent the loop. It would be as if you had a crossed-cable instead of the third-party switch.

If it doesn't, then the network will meltdown.

Kevin Dorrell

Luxembourg

View solution in original post

Kevin Dorrell · ‎10-31-2007

It depends on whether the third-party switch passes the BPDUs through transparently. If it does so, the STP will block a port to prevent the loop. It would be as if you had a crossed-cable instead of the third-party switch.

If it doesn't, then the network will meltdown.

Kevin Dorrell

Luxembourg