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Cisco Bug: CSCuq27744 - Incorrect percent in sh hardware internal forwarding table utilization

Last Modified

Feb 12, 2018

Products (8)

  • Cisco Nexus 7000 Series Switches
  • Cisco Nexus 7000 10-Slot Switch
  • Cisco Nexus 7000 4-Slot Switch
  • Cisco Nexus 7700 6-Slot Switch
  • Cisco Nexus 7000 18-Slot Switch
  • Cisco Nexus 7700 18-Slot Switch
  • Cisco Nexus 7000 9-Slot Switch
  • Cisco Nexus 7700 10-Slot Switch

Known Affected Releases

6.2(8)

Description (partial)

Symptom:
The 'show hardware internal forwarding table utilization' output is displaying misleading TCAM utilization percentages.  TCAM capacity should be calculated against the "Physical Entries" column, not "Logical Entries".

show hardware internal forwarding table utilization

Entry                       Logical         Physical        %Total
Type                        Entries         Entries          TCAM Capacity
---------------------------------------------------------------------------
Single-Width Entries:       99810           99810           76
  IPv4 Unicast              99810           99810           76
  L2VPN Peer                0               0               0
  MPLS                      0               0               0

Dual-Width Entries:         15621           31242           11  <------ This should be ~22%
  IPv4 Multicast            4               8               0
  L2VPN IPv4 Mcast          0               0               0
  IPv6 Unicast              15617           31234           11

Quad-Width Entries:         5               20              0
  L2VPN IPv6 Mcast          0               0               0
  IPv6 Multicast            5               20              0

Free Single-Width Entries:  0               0               0

Conditions:
This issue is seen on Nexus switches.
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