Satellite starts DoS Attack: ARP Attack when connected to Ethernet

Guru - Experienced User

Sep 30, 2018

What is the Mfr and model# of the ethernet switch if one is in the configuration

Turn OFF ALL other devices accept for 1 wired PC with the router. Walk thru the setup wizard. Skip adding the satellites during the wizard. After you set up the router and give a new SSID and PW and the router is rebooted. Go in and sync the router and 1 satellite first. You can do this in the same room with the router and satellites. After you get one synced, set an IP address reservation for the 1 satellite. Add, Save and Apply. Turn of the 1st satellite and turn on the 2nd satellite and get it connected. Do the same IP address reservation for the 2nd satellite. Add, Save and Apply. Turn off the satellite and then place each satellite in there remote locations.

Check Connected devices after placing satellites. Check internet access. If good,

Begin to turn on the rest of the home devices.

Yes, try the beta as well...

RatChickens wrote:

Firmware: 2.1.4.16
Modem: Netgear CM500-1AZNAS
4000 sq ft
~35 ft to one satellite, ~45 ft to the other

I'm not sure why any of the wireless settings matter. My problems are specific to ethernet backhaul. If I use wireless, I have no problems other than the satellite that is further away has problems getting a signal from the router (which is why i want to use ethernet backhaul). The second I start using ethernet, the satellite goes nuts, sending a ton of traffic over the wired interface, the router shows the ARP attack in the logs, and my network dies.. As soon as I unplug the ethernet from the satellite everything works fine.

I had these problems when I initially setup the network, but after numerous power cycles, everything started working, and has worked for 10 months. Things only freaked out yesterday as I had to power off parts of the system to do electical work.

When I try to reserve an IP for a satellite, I get

400 Bad Request
This server does not support the operation requested by your client.

I've heard that the 2.2 Beta Firmware helps resolve backhaul issues. How can i get involved with that Beta?

FURRYe38
Guru - Experienced User
Sep 30, 2018
Sorry I should have edited it for wired, this method works showever after you get the 1st satellite added via wireless, connect the ethernet cable, wait 5 minutes for the top LED to turn on BLUE. Then do a IP address reservation ON the router for the satellite. Once done, turn OFF the satellite and do the same process for the 2nd satellite. When you get both setup via ethernet, turn OFF then place in remote locations. Then turn on and wait for the top LEDs to turn on BLUE again. If that happens, then re-connect your main network and LAN devices.

Question regarding switches is that prior users have mentioned that managed switches don't work well with the Orbi system. One user found that IGMP protools are the cause of this on managed switches,

Looking at your's I believe they are non managed however they do mention support for IGMP:

https://www.tp-link.com/us/products/details/cat-42_TL-SG105.html

https://www.tp-link.com/us/products/details/cat-42_TL-SG108.html

I believe these shouldn't be a problem, however you can determine if they are by removing them temporarily from the network or just directly connecting the satellites to the back of the Orbi router. If they connect there ok, and they don't for some reason while connected to the switches in between, then the switches would be the cause. So my suggestion would be to setup the satellites while in the same room as the router and using a patch cable, set them up one at a time directly to the back of the router first, then place in remote locations...

If you happend to have a managed switch, just be sure to disable any and ALL IGMP protcols as users have mentioned this has helped on there managed switches to get Orbi working correctly.

https://community.netgear.com/t5/Orbi/Looking-for-a-select-group-of-Orbi-Community-members-that-are/td-p/1624103/jump-to/first-unread-message

RatChickens wrote:
None of this setup mentions Ethernet. When setting up Ethernet do you power everything up and get it working wirelessly then plug in Ethernet?

How do I get access to the Beta Firmware?

The central switch being used is a Netgear GS316. This is the main switch being used for backhaul. I also have a TPLink TL-SG108, and 2x TL-SG105. These distribute Ethernet in various rooms.
RatChickens
Tutor
Sep 30, 2018
The orbi satellite is connected through Netgear switch, but for some reason unplugging the TP-Link switches, setting up the satellite and then plugging the switches back in worked. Now I have Ethernet backhaul working on one satellite. I’ll try this process later on the other one.
FURRYe38
Guru - Experienced User
Sep 30, 2018
Ok, let us know how it goes. Wondering about your switches. Hopefully it will all work out.

RatChickens wrote:
The orbi satellite is connected through Netgear switch, but for some reason unplugging the TP-Link switches, setting up the satellite and then plugging the switches back in worked. Now I have Ethernet backhaul working on one satellite. I’ll try this process later on the other one.
RatChickens
Tutor
Sep 30, 2018
Unplugging the TPLink switches while connecting the satellites worked! After verifying the network was happy I plugged the switches back in and everything works.

Thanks for the help!
FURRYe38
Guru - Experienced User
Sep 30, 2018
Ok, Some switchay may need that as to update there MAC address table.

Enjoy.

RatChickens wrote:
Unplugging the TPLink switches while connecting the satellites worked! After verifying the network was happy I plugged the switches back in and everything works.

Thanks for the help!

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Satellite starts DoS Attack: ARP Attack when connected to Ethernet