Hello,
As per my understanding and experience,Cisco Layer 3 Switches are consist of atleast 48 port and more.
No, not at all. There are 8 port Catalyst 3560 switches available, going further over 12-port, 24-port and up to 48-port in a fixed configuration. The question is, however, whether it is wise to buy such a switch with such a small number of ports as 8 ports. Regarding the possible growth of network in the future and implementation of EtherChannels, it may be actually more reasonable to buy a 12-port or 24-port Catalyst switch.
Regarding multilayer capabilities, all Catalyst switches starting from 3560 and higher are multilayer-capable (i.e. 3560, 3560V2. 3560-E, 3560-X. 3750, ...). I suggest having a look at these model comparison charts:
3560/3560V2 Series: http://www.cisco.com/en/US/partner/products/hw/switches/ps5528/prod_models_comparison.html
3560-E Series: http://www.cisco.com/en/US/partner/products/ps7078/prod_models_comparison.html
3560-X Series: http://www.cisco.com/en/US/partner/products/ps10744/prod_models_comparison.html
Specifics about 3560-E Series: http://www.cisco.com/en/US/partner/prod/collateral/switches/ps5718/ps7078/prod_qas0900aecd805bacc7.html
Specifics about 3560-X Series: http://www.cisco.com/en/US/partner/prod/collateral/switches/ps5718/ps6406/qa_c67-578933_ps10744_Products_Q_and_A_Item.html
Please note that 12-port and 24-port 3560 series are currently end-of-sale, and they have been replaced with the 3560V2 series: http://www.cisco.com/en/US/partner/prod/collateral/switches/ps5718/ps5023/end_of_life_notice_c51-574778_ps5528_Products_End-of-Life_Notice.html
For a small deployment, you won't need 3750 series switches - their stackability would probably not be useful to you currently.
Sorry for so many links but I assume you'd like to get yourself familiar with these products families.
Best regards,
Peter
