I should note that if you're using 'bandwidth' to influence STP then the bigger the bandwidth the better your cost.
This is the exception to the 'smaller is always better' rule. Good luck on your lab attempt! On Saturday, February 2, 2013, Steve Di Bias wrote: > LOL it's not often that smaller is better!! > > Lot's of good info here so let me just add a few things. Know the defaults > and understand when to use port-priority, and when to use cost. > > Default port costs for IEEE 802.d (PVST+ in Cisco's implementation) > > 10 Mpbs 100 > 100 Mpbs 19 > 1 Gbps 4 > 10 Gbps 2 > Default Port Priority value for PVST+ = 128 > > For Spanning-Tree manipulation you need to understand when to use which. > Lab requirement may tell you to influence STP either directly or > indirectly. > > - Cost on ingress link is a local decision > - Cost on egress link does nothing > > - Port-Priority on egress link will offset the choice > - Port-Priority on ingress link does nothing > > Switch1 > > interface fa0/15 > spanning-tree vlan 777 cost 10 > > OR > > Switch2 > > interface fa0/15 > spanning-tree vlan 777 port-priority 64 > > What if you can't do either of these? > > This really get's your brain thinking while you're in the lab you have to > be able think fast! Interface bandwidth is another possibility since STP > cost is based on bandwidth. > > HTH > -- Thank you, Steve Di Bias CCIE #32840 _______________________________________________ For more information regarding industry leading CCIE Lab training, please visit www.ipexpert.com Are you a CCNP or CCIE and looking for a job? Check out www.PlatinumPlacement.com http://onlinestudylist.com/mailman/listinfo/ccie_rs
