I added a STP lab (3 L3 switches) into my exiting Route Redistribution network lab. I assigned trunk ports to appropriate Gig. port to create trunk link between switches. I also issued command: spanning-tree vlan 10(20) to each trunk port. I added a laptop to SW3 and assigned ip address(I don't have default gateway address, so used lo0 5.5.5.5 instead. I think I'm wrong ).
Now, I can't ping from one switch to another(except SW1 to SW2 through R1 and R2). I also can't ping from laptop to any switch or Vise Versa. I tried to debug for a couple of hr. but no luck.
I attached the topology and config. file.
I hope someone can help me find a clue.
Thank you!
