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Cisco Bug: CSCuq27661 - N5k/6k - DHCP offers might not get relayed in Fabricpath topologies

Last Modified

Feb 04, 2017

Products (7)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases

5.2(1)N1(7.136) 6.0(2)N2(5)

Description (partial)

Symptom:In a Nexus 5500/5600/6000 switches in fabricpath environment, broadcast DHCP offers might not get relayed under certain conditions.

Conditions:Fabricpath setup with DHCP relay configured on more than 1 switch. DHCP offer sent as broadcast follows multi-destination tree and hits another Relay agent in the setup. Instead of forwarding the offer down the multi-destination path DHCP offer is redirected to CPU and dropped.
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