Multiple DHCP servers

Hi gurus,
I have DTUs on shared networks. Each network has a Cisco 2610 router running the DHCP Relay.
Because on these networks there are also some PCs other than DTUs, I would DHCP Relay sets different DHCP server IPs for DTUs from PCs. PCs should get/refer to a general DHCP server, while DTUs should get/refer to the SRS DHCP.
Do you know if it is possible?
MTIA

Hi,
Why should you use a separate server for Sun Ray DTU's. Keep your setup as
simple as possible and that is perfectly possible with Sun Ray.
Just use your DHCP server that you use for your PC environment and start
your Sun Ray server with "utadm -L on" (which does not setup a DHCP
server on your Sun Ray server).
Still Sun Ray DTUs like to know the SR specific information. To provision these,
have a look at:
http://blogs.sun.com/ThinkThin/entry/sun_ray_provisioning
I have best experiences with option 66 in the standard DHCP server and .parms file.
Jaap

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NetBoot and Multiple DHCP Servers

Hey everyone,
We have a NetBoot machine running here at my school (where I work). It was working like a champ until a couple of weeks ago when our network got upgraded and there are now 2 DHCP servers on our network. That, for some reason, is totally screwing up our NetBooting process.
Here's what I think is happening, and maybe someone can tell me if I right or wrong. NetBoot (or BSDP protocol) is a "broadcast" protocol. (That means it's always just floating around out there on the network. ) NetBoot (BSDP) protocol gets injected into the DHCP stream, and any machine that gets DHCP can get BSDP, and essentially NetBoot.
The problem is with BSDP. BSDP protocol wants to have all of it's "broadcasts" come from the same server. So when we had 1 DHCP server, everything was fine, because client machines would get their whole NetBoot process from one machine... all of the BSDP broadcasts were coming from our 1 DHCP server.
Now, we have 2 DHCP servers. What happens is, a client will get some of it's BSDP broadcasts from one DHCP server, and some from another... which it does not like at all.
I recently read somewhere that it is possible to somehow make one of our DHCP servers the "authoritative" server, to which all of the clients will go to get their NetBooting info.
Does this sound in any way right? Are we on the right track ? Has anyone seen this before? Any help would be greatly appreciated. Thanks a million.
Mike

Now, we have 2 DHCP servers. What happens is, a
a client will get some of it's BSDP broadcasts from
one DHCP server, and some from another... which it
does not like at all.
Not unless your new DHCP server is also a NetBoot server and is set to provide NetBoot services. BSDP and DHCP are not the same thing. If what you were saying were true, it wouldn't be possible to have DHCP and NetBoot offered by different servers.
It IS possible, however, that the two DHCP servers are causing problems by both servicing DHCP requests for the same clients. If you've got multiple DHCP servers on the same subnet (or your router's configured to pass DHCP requests between subnets), you should make sure that only one of the DHCP servers answers requests from any given client. In our world, our Novell server is the default DHCP server on our subnet, but I keep a list of excluded MAC addresses on that server so that my Macintosh clients don't get addresses from it. On the Mac OS X server, I'm careful to limit my address ranges only to those machines which have static address maps in NetInfo. That way, our servers coexist, but they don't overlap.
It's not clear from your message whether your previously solitary DHCP server was your Mac OS X server, or whether one of the two DHCP servers is that box. But whatever the servers are, it might be helpful to turn off one of them to see if the same problem occurs (assuming you can, without major network disruptions). If that's not possible, can you talk to your network admins to see if there's some way to isolate your clients and one of the servers--in other words, see if there's some way to keep DHCP servers from responding to the same requests.
There may be any number of other reasons why this problem has cropped up. You may need to dust off a hub and a copy of Ethereal or EtherPeek to sniff what's happening on the network. You might also try NetBooting in verbose mode, to see where the process craps out. IIRC, there'a decent guide for this kind of troubleshooting over at Bombich's site (www.bombich.com).
Good luck.
David Walton

DHCP scope setings from multiple DHCP Servers

Is there any way to check any particular option is configured in all scopes from multiple DHCp servers.
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I guess there are lots of cmdlets available from Win2k12 DHCP servers.
Regards, Nidhin.CK

Hi, Nidhin...
I use NETSH tool for this, can redirect results to file or filter w/ FIND.
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NETSH dhcpserver \\SERVERNAME dump | FIND /I "set optionvalue 150"
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Marcelo Lucas Guimarães - MCP, MCTS, MCDBA, MCITP Blog: http://mlucasg.wordpress.com

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Parkland Regional Health Authority

We call this as HREAP LOCAL SWITCHING!! but here is the catch.. everytime the AP joins the new site.. we need to configure the VLAN mapping and this wil do it for you!! Here is the link which will resolve ur issue..
http://www.cisco.com/en/US/tech/tk722/tk809/technologies_configuration_example09186a00807cc3b8.shtml#ll
Lemme know if this answered ur question and please dont forget to rate the usefull posts!!
Regards
Surendra

Multiple DHCP

how a dhcp client select a offer among offer from multiple dhcp server

Pankaj
It usually just accepts the first one. So if you have 2 ip helper-addresses under the vlan interface DHCP requests are sent to both DHCP server. Generally speaking the DHCP servers that replies first is the one used.
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'Crystal Reports Server Embedded XI R2 - Sizing and Configuration Guide'
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at com.crystaldecisions.sdk.occa.report.application.ReportClientDocument.for(Unknown Source)
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