Hi Lee, Hope this link will help you.
https://supportportal.juniper.net/s/article/How-to-configure-DHCP-relay-for-EX-QFX-switches-running-Junos-ELS?language=en_US BR, Gary 10 січня 2025, 23:40:40, Від "Lee Starnes via juniper-nsp" <[email protected]>: Hello everyone, We ran into an issue while setting up a DHCP server that will be used for multiple vlans on several EX4300 switches. I am not sure if the issue we are seeing is because the server happens to reside on the same vlan as some of the test host machines, but what we are getting at the DHCP server side is the DHCP-Relay agent packets and also DHCP broadcast packets. We have setup what I thought was DHCP snooping to prevent the broadcast traffic, but still seeing it. Does anyone have a working example of a DHCP relay setup on these switches that they can share? Our setup is that each of the ports is an access port except between switches which is trunked with a native vlan set for those. Each host should DHCP their address and the switch relay it to the server. That is happening, but also the DHCP broadcast packets are also being sent to the server so we see two requests for each host. <mgmt switch core> --------------- / \ \ <mgmt-sw01> <mgmt-sw02> <mgmt-sw03> | \ | \ \ dhcp hosts1-30 hosts1-30 hosts1-30 svr VL29 VL29&30 VL30&31 VL29 Any help would be greatly appreciated. Best, -Lee _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp _______________________________________________ juniper-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/juniper-nsp
