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ChrisLuberto
Beginner

DHCP - Deny all MAC Address Accept Phones

I'm working on a Cisco 891 router.  I have a DHCP scope setup but I need it to DENY any MAC that does not start with "00-10-40-*-*-*".  

 

This is the current DHCP pool configuration that is working propertly:

 

ip dhcp pool IPPhones
network 172.22.42.0 255.255.255.0
default-router 172.22.42.254
dns-server 192.168.100.164 192.168.100.12
option 156 ascii "ftpservers=172.22.41.11,layer2tagging=1,vlanid=202"
option 42 ip 192.168.100.164
option 66 ip 172.22.41.11

 

Best Regards,

 

Chris

2 REPLIES 2
johnd2310
Collaborator

Hi,

I don't think you can easily deny certain mac addresses. You best options are:

  1. create a reservation for each phone
  2. create a scope for phones and another scope for everything else

Thanks

John

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I want to DENY all MAC addresses ACCEPT MAC addresses that begin with "00-10-40-*-*-*".