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Cisco Bug: CSCuo88587 - oc: Considerations when using DHCP relay, with uRFP strict and FHRP

Last Modified

Jul 03, 2019

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

6.2(2)S7

Description (partial)

Symptom:
DHCP relayed response packets are sometimes dropped due to uRFP, when arriving at the neighbor nexus instead of the originating nexus.

Conditions:
When using DHCP relay in conjunction with uRFP strict in VPC client vlans and FHRP and DHCP server has multiple ECMP routes back to the DHCP relay agents (N7k VPC pair).
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