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Cisco Bug: CSCup79805 - lldp mts buffer leak with continous port-flapping

Last Modified

Jul 18, 2020

Products (7)

  • Cisco Nexus 5000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases

6.0(2)N2(4) 6.0(2)N2(5)

Description (partial)

lldp memory  leak, mts buffer build up in the N55K.

show system internal mts buffer summary will show a large number of allocated buffers on sap 456

Overall memory consumption of lldp  process goes up over time.

this starts to happen after a disable and reenable of the feature lldp.

You need continuous interface flaps. I.e. a large number of installed servers not yet provisoned which try to come up continuously.
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