Target Device Performance and Freezing Issues While Patched into a Cisco Catalyst Line of Switches
Article ID: CTX121618
Updated On:
Description
Target devices experience intermittent freezing behavior and poor performance while patched into a Cisco Catalyst line of switches.
Resolution
As a workaround, change the threshold for Unicast traffic to a value greater than what the target devices require, or disable Unicast filtering on that switchport.
Note: Every environment is different and requires different settings, depending on network requirements and target workload.
Problem Cause
From Cisco Understanding Storm Control - “Storm control prevents traffic on a LAN from being disrupted by a broadcast, multicast, or unicast storm on one of the physical interfaces.”The server running Provisioning Server and the Client communicate using Unicast UDP. If the storm control threshold on the Cisco switchport interface is set too low or stricter than the necessary operating packet throughput required by Provisioning Server, this behavior can be experienced.
Issue/Introduction
Target devices experience intermittent freezing behavior and poor performance while patched into a Cisco Catalyst line of switches.
Additional Information
This behavior affects all versions of Provisioning Services
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/storm.html
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2SXF/native/configuration/guide/storm.html
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