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What are reason for seeing this message: This is from manager 1 %% SNTP Socket close -1

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TitleWhat are reason for seeing this message: This is from manager 1 %% SNTP Socket close -1
Question
What are reason for seeing the below message on the C5?
x.x.x.x sntp_client.c(1245) 1321 This is from manager 1 %% SNTP Socket close -1
Environment
  • C5G124-48P2
  • Firmware 06.81.08.0005
Answer
These errors coincide with maintenance being done on the server that acts as the SNTP server.

and some other reasons to be considered:

Loss of the SNTP server
Network Congestion has caused the loss or delayed the SNTP packets
The switch is reporting that the SNTP server has sent a "Kiss of Death" packet and the switch is not dropping all packets from the server and has placed the server in a "Not in service" status
                                                                      SNTP Kiss of Death Messages in Logging Buffer                                                                                                                           SecureStacks with SNTP not Polling and NotInService                                                                                                                                             
Additional notes
Here are just a few things to investigate as causes:
  • Use a network traffic analyzer to investigate the network traffic  and determine if traffic is seen where it should be seen
  • Review configuration to determine if a possible mis-configuration such as vlans, etc.
  • Check for any possible Spanningtree issues like topology changes

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