asked on

connect sonicwall to cisco router

Hi experts, i have had a shdsl connection installed at my office connected to a cisco 600 series router.

How do i go about connecting my tz sonicwall to the cisco unit.
The ISP has given me the ip details below of the cisco router. (the details below are an example ip)

Can i just set the sonicwall up with a static wan ip connection to the cisco. Do i need to be issued a spare ip from the ISP for this?

so my sonicwall Wan connection might be:

WAN IP - 115.70.211.114
G/Way - 115.70.211.113 (cisco router)
Subnet - 255.255.255.254

ISP CISCO Unit.
WAN IP: 115.70.211.113
Gateway IP address:115.70.211.112
Subnet mask: 255.255.255.254
Primary DNS: 220.233.0.4
Secondary DNS: 220.233.0.0

giltjr

I am assuming you want to set this up like:

Internet <- outside/WAN -> Cisco <- inside/LAN unprotected -> Sonic Wall <- inside/LAN protected ->

The WAN IP address is the address on the "outside/WAN" of the Cisco device. You need to know how the "inside/LAN" side is setup.

rick81

ASKER

that's usually how i would set it up so the sonicwall WAN port would have local IP in same subnet as LAN port on Cisco.

In other situations with /31 or /30 ip block range ive seen the sonciwall WAN port set with a public IP address not a local ip when connected to Cisco. Maybe this is used to have multiple public IP's on one connection.

ASKER CERTIFIED SOLUTION

giltjr

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

rick81

ASKER

I purchased an additional IP address and set this on the sonicwall WAN connection, connected to the CISCO LAN port.