The VTEP NHs change led to some state entries in the Packet Forwarding Engine (PFE) when the EVPN route or next-hop changes. The system generates the core when such  VTEP NHs are accessed via a show CLI/BGP flap/route change.

The crash files can be seen by executing the CLI command:

user@hostname>show system core-dumps

On QFX5100, QFX5110, QFX5120, QFX5200, EX4100, EX4400, and EX4650 platforms, the dcpfe process crashes in an EVPN-VxLAN scenario when the VTEP NH changes.

The dcpfe process crash will generate core and the device will reboot. The VTEP NHs changes led to some state entries in the Packet Forwarding Engine (PFE). The system generates the core when such VTEP NHs are accessed via a show CLI/BGP flap/route change.
 

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

* On QFX5110, QFX5120, QFX5100, QFX5200, EX4100, EX4400, and EX4650 platforms

* EVPN-VxLAN scenario when VTEP NH changes

The issue is resolved through PR1804628 on the following codes.

2024-08-15 : Article Created

2025-04-23 : Changed categories to QFX-series.

2026-05/06 : Modified the solution to make it visible for Internal, Partner, Customer and Public.