LAB Strategy

1. Copy running-config to flash for later review.
copy runn flash://bk-confg

2. Put in alias
config t
no ip domain-lookup
alias exec begin show running begin
alias exec section show running section
alias exec sip show ip interface brief excl una
alias exec sir show ip route
alias exec cdp show cdp neighbor
ip cef
line con 0
exec-timeout 0
logging syn
end
wr

3. Find out the physical connection.
For each router, list ethernet connection and cdp neighbor, vlan.
For each switch, list SVI interface.
For each switch has the layer 3 interface, find out the cdp neighbor(It must be connect to another switch port that has the actual vlan configured)

R1 e0/0 -------vl5-------- Sw2 fa1/0
SW1 vlan 7, 77, 777
SW1 fa1/12 IP ------ vl32 --------- SW2 1/12 layer2

4. Draw Layer 2 topology. Based on step 3, you should be able to place routers around and make a better picture. You can use show cdp neighbor to find out the connection to BB routers.