Cisco Bug: CSCtc24864 - Enable cdp - removed on shut/ no shut dot1q-tunnel interface
Jan 29, 2017
- 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
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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