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Webcast-Catalyst9k
New Member

HowTo DHCP release/renew from IOS? from SDM?

Hi,

I have a 1811 router whose WAN interface is supplied (at the moment) via DHCP. How do I perform a release/renew on this interface?

6 REPLIES
Bronze

Re: HowTo DHCP release/renew from IOS? from SDM?

just write "relese dhcp ".

And to renew "dhcp ".

New Member

Re: HowTo DHCP release/renew from IOS? from SDM?

Thanks,

Is this possible from SDM?

A related question: I would liek to use SDM to manage the router on an ongoing basis, but it does not seem to allow the same level of management as IOS. Am I wrong on this?

For example, how would I restart the router from SDM?

New Member

Re: HowTo DHCP release/renew from IOS? from SDM?

When I attempt to renew dhcp , I get the following error:

"Not in Bound State"

So I guess I need to bind it somehow? Could you please elaborate?

New Member

Re: HowTo DHCP release/renew from IOS? from SDM?

I assume you just typed...

"renew dhcp (interface)"

what is the full cisco error message?

New Member

Re: HowTo DHCP release/renew from IOS? from SDM?

The full command I submitted is:

"renew dhcp FastEthernet 0"

The full response from IOS is:

"Not in Bound State"

TIA

Charlie

New Member

Re: HowTo DHCP release/renew from IOS? from SDM?

Hi Charlie,

Sounds like an interesting problem!

It appears that it is failing during the DHCP process. Is it possible to connect a PC directly to the WAN (without router) to make sure a PC can pick up an IP address?

The other options available will be putting a hub in between the WAN and the router and running a packet sniffer or running debug commands on the cisco router.

Can you also attach the output from

sh interface

sh running (just the interface config)

Thanks

Sarb

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