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[Alan Pevec <1349841@xxxxxxxxxxxxxxxxxx>]

** Also affects: horizon/icehouse
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1349841

Title:
  "Error: Unable to connect to Neutron" is displayed when instance table
  displays many instances over 150

Status in OpenStack Dashboard (Horizon):
  Fix Released
Status in OpenStack Dashboard (Horizon) icehouse series:
  Fix Committed
Status in OpenStack Dashboard (Horizon) juno series:
  Fix Released

Bug description:
  When I displayed over 150 instances in a single page of instance table, I always got "Error: Unable to connect to Neutron".
  The instance table itself is displayed properly, so  I think the priority is low.

  The error is RequestURITooLong from api.neutron.servers_update_addresses().
  This method calls port_list with port_id filter parameters and too many port_id can be passed.
  As a result URI line becomes too long and the above exception is raised.

  It is better not to display such error message and deal with
  RequestURITooLong exception in api/neutron.

  Note that we can avoid by setting API_RESULT_LIMIT to around 100 (the
  default value is 1000).

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