NETGEAR is aware of a growing number of phone and online scams. To learn how to stay safe click here.
Forum Discussion
Solved
GS752TPv2 and DHCP
Hello all, I hope somebody could help me with my problem. I recently got a GS752TPv2 and I am trying to make it work properly with my DHCP. Here is my installation right now for testing: Inte...
I am replying to myself because Netgear's technical support found the solution. Without really understanding why, it seems my router was creating a loop. I deactivated STP and now everything works perfectly so if somebody also has an issue getting an IP using DHCP, try deactivating STP!
Yes, I am using exactly the same port and the same cable on my router to test the connection to the switch and to double check with my computer.
On address table, I can see all the devices plugged to my router (status Learned on the port where my router is plugged-in). My router is listed twice, first with VLAN ID 1 and with VLAN ID 100 which is used for TV. DHCP is on VLAN 1 and all the other devices are listed in VLAN 1. Could that be a problem?
On monitoring logs, I don't have "Buffered Logs". I attached memory logs but I don't see anything weird in it.
When I manually configure the switch IP address with a valid IP (@192.168.1.251, netmask 255.255.255.0 and gateway 192.168.1.254 -- which is my router address), my router still doesn't see it and to be able to access to the switch, I need to manually setup my computer IP. For short, the IP changed but the switch behave in the same way than with its previous address (192.168.0.239).
I am replying to myself because Netgear's technical support found the solution. Without really understanding why, it seems my router was creating a loop. I deactivated STP and now everything works perfectly so if somebody also has an issue getting an IP using DHCP, try deactivating STP!
Tripo wrote:I am replying to myself because Netgear's technical support found the solution. Without really understanding why, it seems my router was creating a loop. I deactivated STP ...
There can be other devices connecting e.g. concurrently to the router's WiFi and to an Ethernet port direct or indirect connecting to the switch. The router on it's own (unless there is an incorrect config of a LAG or aggregation between the router and the switch with multiple links) won't create a loop. Just disabling STP instead of finding the effective issue will move the issue to another point...
Sonos devices can cause such isues for example.
NETGEAR Academy
Boost your skills with the Netgear Academy - Get trained, certified and stay ahead with the latest Netgear technology!
Join Us!
