How do I configure a cisco 2801 + Etherswitch + SDSL + Cable modem ?

Apr 03, 2005 0 Replies

I just recieved a Cisco 2801 which came with (2) 4-port etherswitch HWIC cards, and i'm trying to configure it. Since I'm not a well versed cisco person (know the basics though), i need some help in knowing if what i'm trying to do is possible. So here are the parameters.



A. My DSL provider gives me a network bridge which has 1 ethernet port, and they provide me with 4 static IP addresses 66.88.88.166/24.



B. My Cable provider gives me 4 DHCP addresses, and a cable modem with



1 ethernet port.

C. My local network is spread through a hub, typical 192.168.0.x/24



I'd like my setup to be able to use ALL 8 IP addresses for internet, and route outbound using the cable addresses, as well as recieve inbound traffic for my mail server, dns server etc. So here how i have things connected. [use fixed font to see my diagram below]



[ Cisco 2081 ] [dsl isp ][DSLBrige ][ 4 port etherswitch ] [cable isp][cablemodem][ 4 port etherswitch ] [ ]local network [ built in port 0/1 ][hub]

All cables are good and working, ports are up/up



My question is: is what i'm trying to do even possible? If so how?



I've noticed a few folks talking about using individual vlans per address, however you cannot mask /32 on a vlan address. so since i have 4 consecutive DSL IP's I dont know how I would be able to use vlan.



Also, I tried using just one of the DSL addresses in a vlan setup, and I was unable to ping my ISPs gateway



Any help would be appreciated.



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