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Cisco Bug: CSCul40898 - AToM traffic sent into core is missing dummy vlan header

Last Modified

Apr 18, 2019

Products (17)

  • Cisco IOS
  • Cisco 7206 Router
  • Cisco 7301 Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco 7206VXR Router
  • Cisco 7204 Router
  • Cisco 7202 Router
  • Cisco ME 3600X-24FS-M Switch
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
  • Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks
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Known Affected Releases


Description (partial)

Symptom: After reloading the router or fresh service-instance configuration, traffic
received from the access is sent to the core without a dummy VLAN header.  This traffic is received by a remote PE2 and sent to switch with a missing VLAN header. Therefore CE2 drops received packets.  When the issue is removed, captured traffic in the core contains a dummy VLAN header.
Conditions: This symptom is occasionally observed when the router is reloaded and is consistently observed when a new service instance is configured as an xconnect member.
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Bug Details Include

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