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Cisco Bug: CSCvv64248 - N9k- DHCP Relay DHCP OFFER broadcast loop/bounce in EVPN Fabric

Last Modified

Oct 06, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

9.3(4) 9.3(5)

Description (partial)

Symptom:
DHCP offers (broadcast) may bounce back between VTEPs in VXLAN Fabric environment
MAC flaps on downstream switches as DHCP offers are reflected back towards the client

Conditions:
VXLAN Fabric
DHCP relay configured on SVI/Anycast GW
DHCP Server sending broadcast DHCP offers in the VLAN/SVI  with DHCP relay configured
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  • Status
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