Guest

Preview Tool

Cisco Bug: CSCup62289 - 8.0.6 DNS recovery check may never succeed

Last Modified

Feb 09, 2017

Products (1)

  • Cisco Web Security Appliance

Known Affected Releases

8.0.6-053

Description (partial)

Symptom:
Local DNS server may stay down once its registered as dead.  If all your DNS servers are down, this results in 503s to requests being run.

Conditions:
Getting stuck in a down state, is dependant on the type of local DNS server.  The problem in the code is that we run the recovery checks on a request that had failed.  And if a local DNS server didn't answer a query the first, its a query that it may not answer the second time.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.