router on a stick trunking

ako4130

I am seeking advice on what to do regarding a scenario based on the ICND exam. Which configuration do I use when using trunking on a router on a stick?

I have the following configuration given in Odom's Self Study book ICND Exam certification guide, pg. 309.

interface fastethernet 0
ip address 10.1.1.1 255.255.255.0

interface fasthethernet 0.2
ip address 10.1.2.1 255.255.255.0
encapsulation dot1q 2

interface fastethernet 0.3
ip address 10.1.3.1 255.255.255.0
encapsulation dot1q 3

I also have the following configuration in CCNA Portable Command Guide by Scott Empson pg.129 to be used on subinterfaces:

int fa 0
no shut

int fa 0.1
encapsulation dot1q 1 native
ip address 10.1.1.1 255.255.255.0

int fa 0.2
encapsulation dot1q 2
ip address 10.1.2.1 255.255.255.0

I tried both configurations on a simulation called packet tracer 4.1 and the second configuration worked but the command switchport access vlan 1 did not show up on the running configuration.
I tried the first configuration on the simulation and it worked and the configuration displayed all commands on the running config. My question is which one should I use when studying for the exam?

dtlokee

They are both valid configs, in the first one the physical interface is going to catch all the traffic on the native VLAN (untagged). Some people like the second example because it seems to be more consistent.