Router showing same IP Subnet on both LAN and WAN.

[mathew123]

Router: Dlink DIR 605l.

LAN:
IP Address :192.168.0.2
Subnet Mask :255.255.255.0
DHCP Server :Enabled

INTERNET:

Connection : DHCP

IP Address :
192.168.0.33
Subnet Mask :
255.255.255.0
Default Gateway :
192.168.0.1

Can sum1 plz explain this. for example, Normally when Wan IP Gateway is: 192.168.0.1 then LAN Changes to 192.168.1.1 .How the IP address can be in the same subnet on lan and wan?

Thanx to all.

 

[bill001g]

Yup that is not going to work too well. Say the router was trying to figure out how to send data to a new ip such as 192.168.0.100. Which interface will he send the ARP to.

I suppose you could make this work with proxy arp and doing strange stuff like sending out arp on 2 interfaces.

I suspect you will quickly get duplicate IP addresses in a configuration like this.

If you question is why did the router not change the IP for the LAN that I have no clue I normally manually select the lan addresses when there is any strangeness to the configuration.

 

[mathew123]

Yup that is not going to work too well. Say the router was trying to figure out how to send data to a new ip such as 192.168.0.100. Which interface will he send the ARP to.

I suppose you could make this work with proxy arp and doing strange stuff like sending out arp on 2 interfaces.

I suspect you will quickly get duplicate IP addresses in a configuration like this.

If you question is why did the router not change the IP for the LAN that I have no clue I normally manually select the lan addresses when there is any strangeness to the configuration.

Hi bill001g,

As you said i changed the LAN IP manually to 192.168.1.1 and now its all working how it should be. before when i try to ping the Gateway IP there was many packet loss, even the ping time was showing above 2000+ ms. After changing Lan Ip manually, now there no packet loss and ping time is less than 10ms.

Thanks.