Ethernet Switching
Ethernet Switching

DHCP exclude-address on QFX5100

‎01-08-2017 09:06 AM



I need to replace my ex switch with QFX5100. All the DHCP configuration onEX switch is replicated to QFX5100. The only command i am unable to find in QFX is DHCP exclude-address command. Can anyone help. The EX command is as below.


set system services dhcp pool exclude-address





Ethernet Switching

Re: DHCP exclude-address on QFX5100

‎01-08-2017 10:27 AM

I would guess that this function hasn't been implemented on DHCPD on QFX. You need to use JDHCPD instead which is the way to go moving forward.


Here is a configuration example for JDHCPD-style configuration:


You can then configure an excluded address via something like this:

set access address-assignment pool XXX family inet excluded-address

Please note: You have to remove all existing DHCPD configuration to change to JDHCPD as these cannot run at the same time.


Hope this helps.

Best regards,

Jonas Hauge Klingenberg
Juniper Ambassador & Technology Architect, SEC DATACOM A/S (Denmark)