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MAC Address Flapping Between SMLT Port and IST Port Causing Packet Loss To Phones

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Information

 
TitleMAC Address Flapping Between SMLT Port and IST Port Causing Packet Loss To Phones
Symptoms
  • Phones having problems with SIP registering and unregistering
  • Ping loss to phones indicating intermittent packet loss
  • Traffic routed by upstream Cisco in HSRP configuration
  • Forwarding database (FDB) on both VSP 8600's goes from learning of Cisco HSRP MAC over proper SMLT port to IST when issue occurs
Environment
  • VSP 8600
  • Release 6.3.1.0
Cause
Software defect VOSS-15890
Resolution
Issue resolved after upgrade to 6.3.2.0 release
Additional notes

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