vlan Plz help

[koshu]

I will be glad if some one can help me on itI have a problem .We are planning to put firewall in our network.The problem is that firewall can point to a single gateway but i have multiple gateways for my network because we have taken bandwidth from different providers and all three bandwidth is terminated on different router's .Now they are Suggesting that we have to put a L3 switch in between firewall and all three routers and give one static ip address to L3 switch and than firewall will point that static ip .Can some one suggest how i have to configure cisco 3550 L3 series switch.Plz help

###### ####### ######
# R1 # # R2 # # R3 #
###### ####### ######
# # #
# # #
# # #
#############
# L3 Switch #
#############
#
#
###########
# Firewall#
###########
#


R1 is having 10.1.0.0/22 Network
R2 is having 10.9.0.0/22 Network
R3 is having 10.20.0.0/22 Network


Plz help


Regards
Kaushalender

 

[routerman]

Kaushalender,

A couple of questions.

R1,2 and 3, are these routers pointing towards the Internet or are they supporting your Internal network sites?

What type of firewall are you considering purchasing?