Configuring Parent And Child Pools - HP ProCurve Secure 7000dl Series Basic Management And Configuration Manual

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Configuring Parent and Child Pools

If your ProCurve Secure Router supports contiguous subnets, you can config-

ure a single parent pool for the range of subnets. In this pool, you would specify

settings that apply to all of the subnets, such as domain name, DNS servers,

WINS servers, and lease time.

You would then configure child pools, each of which would have its own

subnet address and default gateway. The other settings would be automati-

cally imported from the parent pool, saving you time and minimizing oppor-

tunities for miskeying a server address.

When you configure a parent pool, you specify the range of subnets by entering

the network address bits the subnets have in common followed by the (now

shorter) prefix length.

Figuring out the exact number of bits that two subnets have in common

involves converting from decimal to binary and can be complicated. The

simplest method is to use the address and bit length for the last common octet.

For example, you want to configure a parent pool for subnets 192.168.1.0 /24

and 192.168.2.0 /24. The parent pool network address could be 192.168.0.0 /16.

However, you should be careful using this method, especially when your

network uses variable-length subnets.

192.168.1.0 /24

192.168.2.0 /24

Figure 13-3. Example DHCP Pool Configuration

Dynamic Host Configuration Protocol (DHCP)

192.168.0.0 /16

WINS servers

192.168.1.0 /24

192.168.2.0 /24

Configuring a DHCP Server

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