DHCP manual binding clarification

[Pradeep H A]

Hello experts,

need a clarification regarding this DHCP manual binding example on Cisco 1802 router. My question is will this manual binding configuration work? or will we have a problem because the manual binding is overlapping with the excluded range?

no ip dhcp use vrf connected

ip dhcp excluded-address 10.222.167.0 10.222.167.99

ip dhcp excluded-address 10.222.167.201 10.222.167.255

!

ip dhcp pool Holzwickede-1

   network 10.222.167.0 255.255.255.0

   domain-name xxxxxxx.com

   dns-server 10.1.10.21 10.224.123.4

   default-router 10.222.167.1

!

ip dhcp pool Holzwickede-Reserved-1

   host 10.222.167.250 255.255.255.0

   hardware-address xxxx.xxxx.xxxx

!

Quick answers appreciated because I have to implement this on our clients router today. Thanks a lot in advance.

[cadet alain]

Hi,

if the manual binding is for an excluded address it won't work.A manual binding is  just a special allocation but it is still an allocation and you can't allocate what you exclude from the scope.

Regards

Alain

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[Pradeep H A]

Hi Alain,

Thanks for the quick update, so do you suggest me to configure the excluded range like this?

ip dhcp excluded-address 10.222.167.0 10.222.167.99

ip dhcp excluded-address 10.222.167.201 10.222.167.249

ip dhcp excluded-address 10.222.167.251 10.222.167.255

or is there a better way to avoid the excluded range conflicting with manual binding?

[cadet alain · Accepted solution]

Hi,

If you want to allocate an IP from a scope it must not be excluded so you have to modify your excludded addresses like you've done.

Regards

Alain

Don't forget to rate helpful posts.

[Pradeep H A]

Thanks a lot Alain,

saved me from trouble