On 25/04/05, Shakthi Kannan <cyborg4k@xxxxxxxxx> wrote:
For a large network with routers, this information is
exchanged in BPDUs (Bridge Protocol Data Units) when
you do STP (Spanning Tree Protocol).
Spanning Tree Protocol:
http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci214602,00.html
Understanding Spanning Tree Protocol:
http://www.cisco.com/univercd/cc/td/doc/product/rtrmgmt/sw_ntman/cwsimain/cwsi2/cwsiug2/vlan2/stpapp.htm