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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)

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).

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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