Internet - Linksys - Pix 501 connection problem

[beardj]

My network looks like this:

Internet(cable modem)
|
Linksys WAP/Router(DHCP client of cable modem and server to PIX)
|
Cisco Pix 501 (DHCP client of Linksys and DHCP server to systems on inside interface)
|
Dlink Switch
|
many client workstations

Design Rationale: Segment wireless traffic from business systems, while allowing all to access the interweb.

The problem I have is that I cannot consistently get the PIX to take an IP from the Linksys... It works for a few days then dies. I've tried seemingly endless combos of IPs and subnets, but to no avail. Today I tried this and it failed:

Linksys: Gateway:192.168.1.128 / Mask:255.255.255.128
Pix: Gateway:192.168.1.1 / Mask:255.255.255.128

Any ideas? If this IP addressing scheme is acceptable, then do I need some static routes in the PIX? Any help is sincerely appreciated. -Josh

 

[chicocouk]

192.168.1.128 / Mask:255.255.255.128 is not a valid ip address and mask pair when used together.

But the main question to ask is why are you making the pix a dhcp client of the linksys? Why not put both on static ips? It's not as if you will maybe NOT have the pix connected, so why should it wait to get given an ip address?

CCNA, MCSE, Cisco Firewall specialist, VPN specialist, wannabe CCSP

 

[havanajoe]

I would agree with chicocouk, it doesn't make sense to make the outside of the pix a dhcp client if you don't have to. You will have to put static routes in the linksys wap for the networks that live behind the pix. If you need to use DHCP, then check to make sure that you are running the latest firmware (but you've probably already taken care of that aspect).