Hi,
I have a query on Native vlan.
Here is the topology
Router 1 (e0/0) ------ (f0/1)SW1 (f0/2) ------ (f0/2) SW2 (f0/1) ------(e0/0) Router 2
Necessary configuration on the devices
Router 1
int e0/0.100
encapsulation dot1Q 100
ip address 10.0.0.1 255.255.255.252
SW1
int f0/1
switchport trunk encapsulation dot1q
switchport mode trunk
int f0/2
switchport trunk encapsulation dot1q
switchport mode trunk
SW2
int f0/2
switchport trunk encapsulation dot1q
switchport mode trunk
int f0/1
switchport access vlan 100
switchport mode access
Router 2
int e0/0.100
encapsulation dot1Q 100
ip address 10.0.0.2 255.255.255.252
Obeservations
# With the above configuration i am not able to ping 10.0.0.1 from router 2
# Changing port f0/1 on switch 2 from access to trunk port resolve the issue , which i can understand
# hoverver If i set native vlan as 100 on router 2 (encapsulation dot1Q 100 native ) , i am able to ping . I am not able to understand why this happens
Any help on this is highly appreciated ..
Thanks
MS