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On Junos 20.2R2-S1 Release QFX5120, QFX5110 and EX4650 transmit untagged ARP packet on a trunk port

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Article ID: TSB17970 TECHNICAL_BULLETINS Last Updated: 02 Feb 2021Version: 1.0
Alert Type:
PSN - Product Support Notification
Alert Description:
On Junos 20.2R2-S1 Release with EVPN-VXLAN configured, QFX5120, QFX5110 and EX4650 transmit untagged ARP packet on trunk port which may lead to traffic drop.
Solution:
On Junos 20.2R2-S1 Release with EVPN-VXLAN configured, QFX5120, QFX5110 and EX4650 transmit untagged ARP request packet on Enterprise style trunk port or Service Provider style port, which may lead to traffic drop. This issue is seen due to PR 1569592 and only specific to Junos Release 20.2R2-S1. No other Junos Release is affected.

The PR is fixed in 20.2R2-S2.

 
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