as long as we're on the subject of DHCP, I'm wondering if someone can point me to a reference giving the specifics of the DHCP option numbers ( without pointing me to The DHCP Handbook, which I don't have time to read right now ) I ran a cross a situation where I needed to understand some of the option numbers, and what they meant. The RFC's I checked mentioned options but did not specify the numbers and their associated services. I did find the specific answer I required on CCO ( believe it or not ) but it occurs to me that it would be handy to have a reference.
( RFC 1533 did not list options above 61. RFC 2132 list one of the options I was looking for, but stops at so. none of the other couple - out of 20 - that I browsed looked promising. I checked IANA, but I didn't think I would find anything there, and I was right. ) Chuck -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Priscilla Oppenheimer Sent: Wednesday, September 26, 2001 6:24 PM To: [EMAIL PROTECTED] Subject: Re: DHCP [7:21051] At 05:14 PM 9/26/01, Brian wrote: >Yeah I always thought the helper address command was the way to get a whole >bunch of nonroutable junk forwarded. It gets a bunch of UDP broadcasts forwarded. I figured out the ip dhcp-server command. It's not a replacement for ip helper-address. It's for access servers. It's only documented in access server documentation and documentation for the Gateway General Packet Radio Service (GPRS) Support Node (GGSN), whatever that is. The GGSN provides services to wireless devices, that much I know, and it's sort of an "access server" for the purposes of this discussion. So dial-up users, wireless users, etc. reach the Internet or corporate intranet through the access server. With ip dhcp-server you can make sure the access server gives these users an IP address because it forwards their requests (or asks on its own) to a DHCP server. Note that if the DHCP server is not on the same LAN as the access server, then you need to configure ip helper-address on intermediate routers between the access server and DHCP server. ip helper-address is also used for the more common situations, for example, when clients are on a different LAN than the DHCP server. ip dhcp-server didn't work in this case, per my previous message. I'd love to hear any more uses for ip dhcp-server if they exist. I would think that "access server" could also mean a DSL or cable modem router, but I don't see any evidence of the "ip dhcp-server" command being documented for those environments. (The command definitely doesn't turn the router into a DHCP server a I originally said, sorry. I feel sort of justified for that mistake, though since the other "ip dhcp" commands do that. ;-) Priscilla > Bri ________________________ Priscilla Oppenheimer http://www.priscilla.com Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=21260&t=21051 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
