Cisco Interfaces & Static Routing

[Anthony McDonald]

I hope you guys can help me - I am actually looking for the reverse of configuring my router! I configured this many years ago and now need to take this and make an Untangle router work in it's place!

The running config is below (I changed the IP addresses except for the local LAN addresses). I need to see if someone can help me "convert" this to "non-cisco" language to I can duplicate it in the Untangle device (I removed the "!"'s). I put the routes in the Untangle but it does not work, so it may be correct but be an interface configuration problem instead of a static route problem. I have one Cisco but it appears that it has 3 IP addresses (192.168.40.1, 205.200.100.50, and 192.168.40.2):

interface Embedded-Service-Engine0/0

no ip address

shutdown

interface GigabitEthernet0/0

description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-GE 0/0$

ip address 192.168.40.2   255.255.255.0   secondary

ip address 205.200.100.50   255.255.255.192

duplex auto

speed auto

no keepalive

interface GigabitEthernet0/1

no ip address

shutdown

duplex auto

speed auto

ip forward-protocol nd

ip http server

ip http authentication local

ip http secure-server

ip http timeout-policy idle 60 life 86400 requests 10000

ip default-network 192.168.40.1

ip route 0.0.0.0     0.0.0.0     192.168.40.1

ip route 198.100.50.25     255.255.255.224      205.200.100.40

ip route 207.200100.50     255.255.255.255     205.200.100.40

[Seb Rupik]

Hi there,otho summarise, you have a cisco device with two IP addresses:  192.168.40.2/24 and 205.200.100.50/26 , but of which are configured on the same interface.

Gi0/0 is connected to ethernet segment which has two IP subnet broadcast on it. You therefore have three routes configured, a default route on the secondary subnet and two more specific routes to subnets.

I've never used an Untaggle device, but does it support secondary IP address configuration on interfaces? If this is a SOHO device I doubt it does.

I suggest to configure two separate interfaces: 192.168.40.2/24 and 205.200.100.50/26 and use a switch to connect your incoming connection to bother Untangle switchports.

Then, revisit your secondary IP address configuration. This setup is normally used during a migration and shouldn't really be used in production long term.

cheers,

Seb.

[Martin L]

Untangle router? what is it?
ip route 0.0.0.0 0.0.0.0 205.200.100.x - is default route and should be pointing to public ip on the other end of 205.200.100.50; probably .40 cause of 2 last static routes.
Default route is for unknown networks in routing table like the ones on the internet (8.8.8.8, google, yahoo IPs, etc).
u should do NAT ing to translate public IP into private on GigabitEthernet0/0 and ip address 192.168.40.2 255.255.255.0 should be moved to other gig0/1 interface
this router also has web server turn on - ip http and https (secure)
ip default-network x.x.x.x tells all internal neighbors to use x.x.x. to get out to unknown IP like on the internet. (it should propagate default network via x/x/x)