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There are 3 types of flooded traffic on Layer 2 switchports:1. Broadcasts2. Multicasts3. Unknown UnicastsWhen one of these frames arrive on a switchport they are forwarded out all ports in that vlan, including trunks that permit that vlan, EXCEPT the...
Please recheck the following:1. Are you trunked between the switches you want to exchange VTP messages. Do a "show int trunk" command on the switches on both sides of the trunk.2. Are you in the (exact) same VTP domain with the exact same password, i...
To go back to the factory default "null" domain on IOS switches, like the 3750, you have to delete the vlan.dat file in flash. This will also delete all non-default vlans.Switch#delete flash:vlan.datDelete filename [vlan.dat]? Delete flash:vlan.dat?...
The VTP basics are:1. Are you trunked between the switches you want to exchange VTP messages (more on this below in #4)2. Are you in the (exact) same VTP domain with the exact same password, if any - capitalization and spelling are critical (Are yo...
