I have a 2801 router which I am using both for NAT/PAT & DHCP. I have searched unsuccessfully for information on what is required to forward lease assignments to a local DNS server to implement dynamic DNS.
Any information you can share would be greatly appreciated.
The DHCP server sends the update information to the DNM server, not the primary DNS server. The primary DNS
server retrieves this information from DNM via a zone transfer.
The DHCP server will keep an open connection between it and the DNM server so if that connection is not up the DHCP server will attempt to re-connect. If gives up after (I believe) 4 unsuccessful attempts. So if DNM is not accessible the DNS update info never gets sent.
The support for forwarding dynamic updates to DNS like a windows based DHCP server does not depend
on the IOS. You only need to use the following commands:
router(config)#int e0 (or the interface you are using)
#ip helper-address (here you have to place the address of the
external DCHP, the router must be able to ping this address)
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.