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Cisco Bug: CSCum34662 - N5k: pxe boot fails when snooping is enabled on client vlan

Last Modified

Feb 23, 2018

Products (6)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 5020 Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5010 Switch

Known Affected Releases

5.1(3)N2(1)

Description (partial) 

Symptom:
PXE Boot may fail if DHCP snooping enabled for client's VLAN.

Conditions:
Issue will happen in case if: 
*** DHCP snooping enabled globally and for PXE client's VLAN; 
*** PXE client trying obtain TFTP related info, by sending unicast DHCP Req towards DHCP server.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
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