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Cisco Bug: CSCte67201 - Very large CEF memory usage increase starting in 12.2(46)SE

Last Modified

Jan 28, 2017

Products (96)

  • Cisco Catalyst 3750 Series Switches
  • Cisco Catalyst 3750V2-24PS Switch
  • Cisco ME 3400-24TS-A Switch
  • Cisco Catalyst 3560E-48PD-E Switch
  • Cisco Catalyst 3560E-12D-E Switch
  • Cisco Catalyst 2960G-24TC-L Switch
  • Cisco Catalyst 3560E-24TD-S Switch
  • Cisco Catalyst 3560E-48PD-SF Switch
  • Cisco Catalyst 3560G-48PS Switch
  • Cisco Catalyst 3560-12PC-S Compact Switch
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Known Affected Releases


Description (partial)

Starting in 12.2(46)SE, CEF may utilize vast amounts of memory.  This memory is shown as being
in use by the IP RIB Update process.  The amount of memory held by this process will be about
2000 bytes per prefix known by CEF.

A Catalyst switch is running Cisco IOS Release 12.2(46)SE, 12.2(50)SE, 12.2(52)SE, or 12.2(53)SE.  (This also applies to any rebuilds, ie, 12.2(50)SE1, 12.2(50)SE2, etc.) that is running ip routing.
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Bug Details Include

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  • Status
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