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Pass ctrl-q char to unlock it from telnet hung state #37

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Pass ctrl-q char to unlock it from telnet hung state #37

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be7686f
Pass ctrl-q char to unlock it from telnet hung state
shreyash45 Jun 20, 2024
ed1dbd5
passing ctrl-q after count=3
shreyash45 Jun 25, 2024
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8 changes: 8 additions & 0 deletions netmiko/cisco_base_connection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -123,6 +123,14 @@ def find_prompt_special_case(self, delay_factor: float = 1.0,
if cxr_pattern in prompt.lower():
time.sleep((delay_factor * 0.1) + 3)
prompt = self.read_channel()
if count == 3 and not prompt:
self.log.info("Probably in telnet hung state. Passing ctrl-q . Potential DDTS: CSCwh67759 and CSCvy64395")
self.write_channel('\x11')
time.sleep(15)
prompt = self.read_channel().strip()
if prompt:
self.log.info(f"Prompt found after passing ctrl-q. Prompt is {prompt}")
break
count += 1

# If multiple lines in the output take the last line
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