Hi Srinivas ,
Craete follwoing vlan's on 3500 switch.
Int vlan 2
descripton ** Accounts - vlan**
ip address 192.168.1.2 255.255.255.0
int vlan 3
descritpion **marketing **
ip address 10.10.10.1 255.255.255.0
int vlan 4
descritpion **technical**
ip address 10.20.10.1 255.255.255.0
int vlan 5
descritpion **admin**
ip address 10.30.10.1 255.255.255.0
int f0/1
description UPlink to 1'st L1 switch**
switchport trunk encapsulation dot1q
int f0/2
description UPlink to 1'st L2 switch**
switchport trunk encapsulation dot1q
int f0/3
description UPlink to 1'st L3 switch**
switchport trunk encapsulation dot1q
where you want to connect three L1's..
suppose if you want to place L1 switches for connecting different departments then .
1'st L1 config :
int f0/47
des ** uplink to 3550 **
switchport trunk encapsulation dot1q
int vlan2
ip address 192.168.1.3 255.255.255.0
ip deafult-gateway 192.168.1.2
2'nd L1 config:
int vlan 3
descritpion **marketing **
ip address 10.10.10.2 255.255.255.0
int f0/47
des ** uplink to 3550 **
switchport trunk encapsulation dot1q
ip deafult-gateway 10.10.10.1
3'rd L1 config:
int vlan 4
descritpion **technical**
ip address 10.20.10.2 255.255.255.0
int f0/47
des ** uplink to 3550 **
switchport trunk encapsulation dot1q
ip deafult-gateway 10.20.10.1
pl refer the below link.
http://www.cisco.com/en/US/tech/tk389/tk815/technologies_configuration_example09186a008015f17a.shtml#config2
Thanks,
Satish
