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Cisco Bug: CSCtc24864 - Enable cdp - removed on shut/ no shut dot1q-tunnel interface

Last Modified

Jan 29, 2017

Products (1)

  • Cisco 7600 Series Routers

Known Affected Releases

12.2(32.8.11)SX200 12.2(33)SRB3 12.2(33)SXI 12.2REC 12.2SXH 12.2SXI 12.2XJC

Description (partial)

Symptoms: CDP is disabled and its neighbors are not seen on a CDP-enabled QnQ
 port after a shut/no shut operation.
 Conditions: The symptom is observed on an L2 QnQ tunnel port. By default, on L2
 QnQ tunnel port CDP is disabled. CDP can, however, be enabled on a QnQ port
 through the command <CmdBold>cdp enable<noCmdBold>. After enabling the CDP on a
 QnQ port, a subsequent link down and link up (shut and no shut) of this QnQ
 port results in disabling the CDP which is the default behavior.
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Bug Details Include

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