AP350 IP Issues

rjdavison · ‎02-06-2008

I'm setting up an AP350 access point which is connected to a 1721 router and a 1548 switch.

The 1721 is set with a static IP address of 192.168.0.2 which the AP350 uses.

The wireless interface of the AP350 is configured to give out ip addresses through DHCP

My AP350 running-config is attached, the only new thing iv'e added is the dhcp settings using the following commands:

ip dhcp exclude-address 192.168.1.1 192.168.1.10

ip dhcp pool mypool

network 192.168.1.11 255.255.255.0

lease 10

DHCP ip addresses are given out to the computers which connect to the AP350 fine.

The problem is that the FastEthernet0 interface does not want to talk to the 1721.

Am I asking too much from the AP350 to work like this ??

The other odd thing is when I look at the running-config, it shows that the ip address of the FastEthernet) interface is indeed 192.168.0.2, but when I log onto the http GUI, it shows the IP address as being the same as the wireless interface i.e 192.168.1.1

Can anyone help ??

Edison Ortiz · ‎02-15-2008

Couple of things.

First, the FastEthernet interface has bridging enabled with bridge-group 1, that means it's going to use whatever information is under BVI 1

interface BVI1

ip address 192.168.1.1 255.255.255.0

no ip route-cache

and ignore anything under F0.

Another thing, you are handing out IP address to the wireless network under the subnet 192.168.1.0/24, however your router is under subnet 192.168.0.0/24. What device is going to route the packet from the 192.168.1.0/24 segment to the 192.168.0.0/24 segment and vice-versa? It can't be the 1721 router as it doesn't have any IP address in the 192.168.1.0/24 subnet.

___

What you need to do is change the DHCP scope for the wireless for subnet 192.168.0.0/24

Exclude addresses so it can start high enough to avoid any address overlap with the current working subnet at the router.

Add the 192.168.0.0/24 IP address under BVI 1, not F0. Also, you need to have an unique IP address under the wireless device and 1721. You can't share the same IP.

HTH,

__

Edison.