SRX DHCP ConfigurationDHCP configuration is very straight forward in junos. However if you are like me, you can even forget that gateway address must be within the advertised pool. Here is a simple config

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set system services dhcp default-lease-time infiniteset system services dhcp domain-name rtoodtoo.netset system services dhcp name-server 8.8.8.8set system services dhcp name-server 8.8.4.4set system services dhcp router 192.168.100.1set system services dhcp pool 192.168.100.0/24 address-range low 192.168.100.33set system services dhcp pool 192.168.100.0/24 address-range high 192.168.100.62

Once this config is in place, make sure you allow DHCP service on gateway interface e.g

1set security zones security-zone trust interfaces fe-0/0/0.0 host-inbound-traffic system-services dhcp

Note that you are able to allow dhcp service specifically in an interface not in a zone. For example if you type “set security zones security-zone trust host-inbound-traffic system-services” you will see that there is no option for dhcp.

After committing, you can see the bindings via;

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root@srx100-1> show system services dhcp bindingIP address       Hardware address   Type     Lease expires at192.168.100.33   00:16:e6:32:ab:bd  dynamic  2012-10-10 00:28:43 CEST

set system services dhcp defauset system services dhcp domaset system services dhcp nameset system services dhcp name

set security zones security-zon

root@srx100-1> show system IP address Hardw are addre192.168.100.33 00:16:e6:32:ab

Other commands for troubleshooting;

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root@srx100-1> show system services dhcp ?Possible completions:  binding              Show DHCP client binding information  client               Show DHCP client information  conflict             Show DHCP address conflict  global               Show DHCP global scope information  pool                 Show DHCP address pool information  relay-statistics     Show DHCP relay statistics information  statistics           Show DHCP statistics

root@srx100-1> show system Possible completions: binding Show DHCP cl client Show DHCP clie