Broadcast packet 01:80:c2:00:00:1c poisoning G716Tv3 Switch

[XDRich]

Hello,

I have the following problem and need some advice.

I have been working with UBIQUITY but they claim they cannot reproduce the issue.

I have a Ubiquity AP that broadcasts just a few packets to the following address, I assume its for some sort of LLDP stuff.

01:80:c2:00:00:1c

Once the AP does this, the Switch goes nuts and begins to broadcast this packet to all the ports on that vlan mu7tiple times.

In one minute it gets to about 25k packets.

I can unplug the AP and this packet continues to swirl around the switch, and only a power cycle of the switch will kill it.

I have two switchs connected via a lag, I have 5 vlans defines, MSTP turned on,  LLDP turned on.  The switch is connected to a Cisco ISR router and the port has the proper vlans assigned.

This is really killing me as I cannot connect the AP without the switch loosing it all from one packet 01:80:c2:00:00:1c

Any suggestions?

[XDRich · Accepted solution]

I can confirm the fix for this.

See this post ... Netgear Firmware Fix

[Carl_z]

Hi XDRich,

Welcome to the community!

As we known , traffic with destination mac of 01:80:c2:00:00:1c is harmful to switch cpu. And acl can help to protect cpu .

Kindly update to the latest firmware 6.3.1.16， you can download the version here.

After update to 6.3.1.16, apply acl to the port that connected to AP. The acl can be set as the following pic,

Hope it helps

Carl

Netgear Employee

[XDRich · Accepted solution]

I can confirm the fix for this.

See this post ... Netgear Firmware Fix