Description

This is article explains the how to deal with QFX10K EVPN blackholing IPv6 Unsolicited Neighbour Advertisment / NA packets

Symptoms

This issue might be seen if the following conditions are met:


* On Junos QFX platforms
* EVPN VXLAN is configured
* For IPv6 packets

Solution

As per current design the unsolicited neighbour advertisement packets are subjected to proxy NDP suppression feature to reduce flooding on EVPN-VXLAN network.

 

So the unsolicited neighbour advertisement packets are being punted to l2alm and consumed locally there. These packets are not being flooded on the vxlan BD. 

Modification History

2025-05-27 : Article Created