spanning-tree vlan 10 port-priority vs swithport allowed vlan

From: mani poopal (mani_ccie@yahoo.com)
Date: Mon May 09 2005 - 19:43:53 GMT-3


Hi Group,
I have a question in tunking.
-Asssume sw1 is connected to sw2 via fa 0/23 and fa 0/24 both isl trunking(not etherchannel)
-There are vlan 10, 20 and 30 defined.
-For all the vlan sw1 is the root
 
If the task ask us to send the vlan 10 through fa 0/24 trunk(default it will go through fa 0/23 trunk), what is the solutions. Please look at the following both solutions and give your thoughsts
 
method1:
sw1:
int fa 0/24
spannig-tree vlan 10 port-priority 96 (less than 128)
 
mehod2:
sw1/sw2
int fa 0/24
switchport trunk allowed vlan 10
int fa 0/23
switchport trunk allowed vlan 20,30
 
guys what is the difference between both methods, according to my knowledge, both accomplishes the same goal, any thoughts.
 
thanks
 
Mani

                
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