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Cisco Bug: CSCvu91224 - Modify IPv6 LPM 4096 cause Cisco Nexus 9508 IPv6 forwarding issue

Last Modified

Aug 25, 2020

Products (67)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 92348GC-X Switch
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 3636C-R Switch
  • Cisco Nexus 3548 Switch
  • Cisco Nexus 93600CD-GX Switch
  • Cisco Nexus 3548-X Switch
  • Cisco Nexus 9396PX Switch
  • Cisco Nexus 3548-XL Switch
  • Cisco Nexus 92304QC Switch
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Known Affected Releases

9.2(3) 9.3(4)

Description (partial)

Symptom:
After modify IPv6 LPM to max value, the Cisco Nexus 9508 not forwarding the packet when the routing table & forwarding table are fine.

hardware profile multicast max-limit lpm-entries 0
hardware profile ipv6 lpm-entries maximum 4096
Multicast Heavy mode 

N9K# show system routing mode
Configured System Routing Mode: Multicast Heavy Scale
Applied System Routing Mode: Multicast Heavy Scale

Conditions:
Multicast Heavy mode

hardware profile multicast max-limit lpm-entries 0
hardware profile ipv6 lpm-entries maximum 4096
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Bug Details Include

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