Anonymous_User Absent Member.
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Subnet Pool reltionship

Guys
Currently planning do goto a redundant DHCP server.

My question is how does the Subnet Pool marry to a server?

Example:

Central DHCP server across 10 WAN links. The DHCP server holds subnet
ranges for 10 LAN subnets.
10.1.0.0
10.2.0.0
10.3.0.0
etc

When a client from 10.1.0.0 requests a DHCP address the relay agent on
that subnet forwards the request across the WAN to the central DHCP
server. How is the server configured with pools to use the 10.1.0.0
subnet range??

Is the relationship

ServerA - Pool 1 - Subnet 10.1.0.0
ServerA - Pool 2 - Subnet 10.2.0.0
etc

OR

ServerA - Pool 1 - Subnet 10.1.0.0
ServerA - Pool 1 - Subnet 10.2.0.0
etc
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5 Replies
Anonymous_User Absent Member.
Absent Member.

Re: Subnet Pool reltionship

Kcannon@nospam.tgnetworks.com.au schrieb:

>Guys
>Currently planning do goto a redundant DHCP server.
>
>My question is how does the Subnet Pool marry to a server?
>
>Example:
>
>Central DHCP server across 10 WAN links. The DHCP server holds subnet
>ranges for 10 LAN subnets.
>10.1.0.0
>10.2.0.0
>10.3.0.0
>etc
>
>When a client from 10.1.0.0 requests a DHCP address the relay agent on
>that subnet forwards the request across the WAN to the central DHCP
>server. How is the server configured with pools to use the 10.1.0.0
>subnet range??
>
>Is the relationship
>
>ServerA - Pool 1 - Subnet 10.1.0.0
>ServerA - Pool 2 - Subnet 10.2.0.0
>etc
>
>OR
>
>ServerA - Pool 1 - Subnet 10.1.0.0
>ServerA - Pool 1 - Subnet 10.2.0.0
>etc

Are you realy using pools or just SAR´s?
Subnets are assigned to one server.
Subnet Adress Ranges are assigned to the same server, if configured
for dynamic BOOTP and DHCP (default).
To assign different SAR´s in one subnet to different servers, you have
to configure the SAR as dynamic DHCP.

Joerg
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Anonymous_User Absent Member.
Absent Member.

Re: Subnet Pool reltionship

> Kcannon@nospam.tgnetworks.com.au schrieb:
>
> >Guys
> >Currently planning do goto a redundant DHCP server.
> >
> >My question is how does the Subnet Pool marry to a server?
> >
> >Example:
> >
> >Central DHCP server across 10 WAN links. The DHCP server holds subnet
> >ranges for 10 LAN subnets.
> >10.1.0.0
> >10.2.0.0
> >10.3.0.0
> >etc
> >
> >When a client from 10.1.0.0 requests a DHCP address the relay agent on
> >that subnet forwards the request across the WAN to the central DHCP
> >server. How is the server configured with pools to use the 10.1.0.0
> >subnet range??
> >
> >Is the relationship
> >
> >ServerA - Pool 1 - Subnet 10.1.0.0
> >ServerA - Pool 2 - Subnet 10.2.0.0
> >etc
> >
> >OR
> >
> >ServerA - Pool 1 - Subnet 10.1.0.0
> >ServerA - Pool 1 - Subnet 10.2.0.0
> >etc

> Are you realy using pools or just SAR´s?
> Subnets are assigned to one server.
> Subnet Adress Ranges are assigned to the same server, if configured
> for dynamic BOOTP and DHCP (default).
> To assign different SAR´s in one subnet to different servers, you have
> to configure the SAR as dynamic DHCP.
>
> Joerg


I think your missing the intent, I want one DHCP server to hand out a
single Subnet address range for multiple subnets to multiple relay agents
on different subnets.

Subnet Address range is [10.1.0.1-10.1.0.254]
Subnet is [10.1.0.0]

Subnet address range is [10.2.0.1-10.2.0.254]
Subnet is [10.2.0.0]

etc

One single server hosts both ranges and a relay agent from each subnet
forwards requests across a WAN. How does the server know which range to
give the request, by the giaddr tag thats fine. However my question is
what part do POOLS play in all this?
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Anonymous_User Absent Member.
Absent Member.

Re: Subnet Pool reltionship

In article <IudSc.32$oe4.2@prv-forum2.provo.novell.com>, wrote:
> However my question is
> what part do POOLS play in all this?
>

Quite simply, NONE. Subnet Pools are use only when you have multiple
IP subnets on the same physical subnet (i.e., no router between them),
AND they are not on the same physical subnet as the DHCP server. All
of your IP subnets are on different physical subnets from one another,
so Subnet Pools have no place in your config.

bd
NSC Volunteer SysOp


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Anonymous_User Absent Member.
Absent Member.

Re: Subnet Pool reltionship

Legend,

Finally a straight answer why doesn't the doco explain this.


"Brad Doster" <bd@NSCSysOps.net> wrote in message
news:VA.00002a6d.7aa23704@nscsysops.net...
> In article <IudSc.32$oe4.2@prv-forum2.provo.novell.com>, wrote:
> > However my question is
> > what part do POOLS play in all this?
> >

> Quite simply, NONE. Subnet Pools are use only when you have multiple
> IP subnets on the same physical subnet (i.e., no router between them),
> AND they are not on the same physical subnet as the DHCP server. All
> of your IP subnets are on different physical subnets from one another,
> so Subnet Pools have no place in your config.
>
> bd
> NSC Volunteer SysOp
>
>



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Anonymous_User Absent Member.
Absent Member.

Re: Subnet Pool reltionship

Glad I could help. 🙂

bd
NSC Volunteer SysOp


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