So, u have a switch with a trunk (802.1q or ISL link that transport VLAN
information).

If VLAN2 is suffering from a broadcast storm, broadcasts will take all the
bandwidth on the link. So VLAN1 will suffer from the broadcast storm too on
this link, but if u have other links (with just VLAN1 => no trunk), these
links will not suffer from the broadcast storm, so by these links, traffic
of VLAN1 is not altered.

                         VLAN1
                              |
                           SW2------VLAN2
                              |
                              | (trunk)
      VLAN1 ---- SW1
                         /         \
                VLAN1    VLAN2

on switch 1 there's no problem in VLAN1 communication (if the switch is
good -> no internal congestion).
Problem are just in communications across the trunk.



""Joe Morabito""  a icrit dans le message news:
[EMAIL PROTECTED]
> If you have a switch that has 2 vlans (vlan1 and vlan2) using the same
> physical connection to the rest of the network, what happens to vlan1 if
> vlan2 is suffering from a broadcast storm, since both vlans traverse the
> same physical wire?




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