DHCP on WAN interface 6500

[paarlberg]

I have a 6509 with SUP2 w/msfc2 at home, I am currently have dsl for internet with static IP addresses. Due to AT&T not wanting to support faster speeds in my area, I have to look at another option. All of these will be dynamic IP addresses, cable, uverse, etc.

I need to be able to enable dhcp on the wan interface so I can connect directly into one of the gig ports (either on SUP2 or 6316) or on a 10/100 port on a 6348.

I have the following image installed s222-adventerprisek9_wan-mz.122-18.SXF13.bin, according to Cisco's feature tool, it is supported.

I have tried "ip address dhcp" on the interfaces but they will only accept "ip address x.x.x.x", I looked at "ip dhcp" as well and only get the option for "relay".

Any suggestions? I would hate to have to put something else in the mix to handle the dhcp portion. I may be keeping the adsl for my mail server traffic and backup in case of an outage on the new provider. So I need to be able to track if a link is up.

Thanks

[Nikita Singh]

Can you please send me ,

show run int

show int

I'm assuming that it is a layer 3 interface.

[paarlberg]

I can use any of the available interfaces on the switch.

I have the following modules installed

SUP2-2GE (2 gbic slots)

6348 (48x 10/100)

6316-GE (16x GE copper)

Yes it is running Native IOS only.

[Mark Rigby]

Have you tried issuing the command "no switchport" on the interface then enabling DHCP using "ip address dhcp"?

SWITCH(config-if)#no switchport

SWITCH(config-if)#ip address dhcp

[paarlberg]

Yes I have. It is not a recognized command.

I only have the option to set an IP x.x.x.x or dhcp relay. It appears that it may be a bug in 12.2-18.SXF13 as someone reported on dslreports forum that it works in SXF15.

I have issues getting SXF15 or newer to boot from the flash card.