After configuring a Dual Stacked DHCP server and DHCPv6 on Juniper SRX, it’s only right that I did something on Configuring DCHPv4 on a Juniper SRX.
This wont be a long or detailed post, as the configuration is very much the same as my previous post on how to configure DHCPv6 on a SRX, and I’ve went thought quite a lot before about how DHCP works etc.
First, under the system services dhcp-local-server stanza, you will need to create group and set a physical or logical interface that will have DHCP enabled
[email protected]# show system services dhcp-local-server group dhcpv4-group { interface vlan.3407; }
Next, under the access address-assignment stanza, you will need to set the network, the DHCP range and set the IP address that the router will be using within the DCHP pool. The propagate-settings will take configuration from the client DHCP on vlan.3407, if not otherwise specified, most importantly name-server which changes from ISP to ISP and is very important otherwise name resolutions on the LAN won’t work.
[email protected]# show access address-assignment { pool v4 { family inet { network 172.31.106.16/29; range v4-range { low 172.31.106.18; high 172.31.106.22; } dhcp-attributes { router { 172.31.106.17; } propagate-settings vlan.3407; } } } }
This will be all configuration needed to have DHCPv4 on Juniper SRX220. For troubleshooting DHCP you will be able to use the commands below:
[email protected]> show dhcp ? Possible completions: client Show DHCP client information relay Show DHCP relay information server Show DHCP server information snooping Show DHCP snooping information statistics Show DHCP service statistics
As I said, this is the quick post :p
I have included the set commands used in my example below:
Keeran Marquis
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