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Cisco Bug: CSCvu53146 - C93180YC-FX: %IPFIB-SLOT1-2-UFIB_MULTIPATH_TABLE_EXHAUSTION: when Unicast ECMP table is exhausted

Last Modified

Jul 30, 2020

Products (65)

  • Cisco Nexus 9000 Series Switches
  • Cisco Nexus 3548-X Switch
  • Cisco Nexus 92348GC-X Switch
  • Cisco Nexus 3636C-R Switch
  • Cisco Nexus 9516 Switch
  • Cisco Nexus 3548 Switch
  • Cisco Nexus 93600CD-GX Switch
  • Cisco Nexus 92304QC Switch
  • Cisco Nexus 93108TC-FX Switch
  • Cisco Nexus 3064 Switch
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Known Affected Releases

7.0(3)I7(8) 9.3(3)

Description (partial)

Symptom:
A N9K-C93180YC-FX will print the following erroneous message when the device has reached the platform's Unicast ECMP maximum limit. 

%IPFIB-SLOT1-2-UFIB_MULTIPATH_TABLE_EXHAUSTION: Unicast ecmp table exhausted - max index 1022' 

In a large scale network, the message may continue flooding the log buffer, console, terminal and syslog, causing a spike in CPU. "Logging rate-limit" has no effect as it is followed by an "%IPFIB-2-FIB" message, so each message is unique (not repeated).

Conditions:
This error is reported when when the device has reached the platform's Unicast ECMP maximum limit. The command "show hardware capacity forwarding" displays the ECMP GROUP details.
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Bug Details Include

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