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Cisco Bug: CSCuq59689 - BGP Session Down when NAT max-entries is reached

Last Modified

Jan 29, 2017

Products (2)

  • Cisco Nexus 3000 Series Switches
  • Cisco Nexus 3548 Switch

Known Affected Releases

6.0(2)A3(1)

Description (partial)

Symptom:
When NAT max-entries is reached and the following error is seen:

2014 Aug 25 18:31:34 R11.N3500.Top netstack[3647]: NAT: Can't create dynamic translations, maximum limit reached

A BGP peer using the outside NAT interface will go down with the following log message:

2014 Aug 25 18:31:40 R11.N3500.Top %BGP-5-ADJCHANGE:  bgp-10 [3775] (default) neighbor 172.17.0.18 Down - holdtimer expired error

Conditions:
NAT translation max-entries is reached with BGP neighbor configured using the natted interface.
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