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New Member

1130's not passing DHCP info?

We have some 1130's running multiple vlans. However, we are not seeing DHCP info get past the AP's. The AP's are not using LWAPP but IOS and are being trunked backed to a 6509 CATOS. Any ideas?

6 REPLIES
New Member

Re: 1130's not passing DHCP info?

Is the DHCP server on the same vlan?

New Member

Re: 1130's not passing DHCP info?

Yes the DHCP is being served off our PIX off the same vlan 313.

Re: 1130's not passing DHCP info?

Dumb question maybe but are all the VLANs defined on the APs and the switch and do they all have DHCP helpers defined?

Re: 1130's not passing DHCP info?

interface VLAN5

description AP VLAN

ip address 10.5.5.1 255.255.255.0

ip helper-address 10.1.1.2

The "ip helper-address" command instructs the interface to relay DHCP requests to the DHCP server

at address 10.1.1.2

I hope this helps u

New Member

Re: 1130's not passing DHCP info?

Good suggestions all, I did add a helper address to the AP's subinterface. However, this vlan is a guest network with only Layer 2 access. There are no L3 interfaces except on the AP's subinterfaces and PIX which is its gateway and DHCP server. Oddly enough if I statically set the IP's and Gateway I can ping the gateway and other users in this vlan. But still no DHCP...Any other suggestions?

New Member

Re: 1130's not passing DHCP info?

Do you have a network route on the core switch for your guest VLAN or PIX?

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