exclude ip address from dhcp allocation range

  • 14 November 2014
  • 4 replies

Is there a way to exclude a range/single ip address from "configure vlan dhcp-address-range xxxx - xxxx"
for example: configure vlan vlan_name dhcp-address-range -
Can I exclude from being allocated?

4 replies

Userlevel 4
I have the same question
I didn't ever work with EXOS, but I guess you are able to configure static DHCP reservations? If so, just reserve for MAC address aa:11:22:33:bb:cc.

I admit it's a workaround but will prevent duplicate IPs.
Userlevel 6

No, that's not possible. The DHCP server supports only a single continuous range of IP addresses.

The DHCP server implementation was originally meant to provide temporary short-lived IP addresses for Web-based network login, where the final IP address would be provided by a central company-wide DHCP server when the port was moved to the final VLAN.

I have a similar case with one of our customers is asking to exclude a DHCP Ranges:

Network Subnet:

DHCP Ranges (Required): - - -

DHCP Ranges (Exluded): - -

They had sent me one of their Cisco DHCP configuration which they have already applied in their Lab:

ip dhcp excluded-address
ip dhcp excluded-address
ip dhcp pool 0

I wish that Extreme R&D Team that they can add this function especially in EXOS 30.0 or above ...