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Intermittent Loss of SNMP, Ping to Securestack or S-Series

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TitleIntermittent Loss of SNMP, Ping to Securestack or S-Series
Symptoms
  • Intermittent loss of connection
  • Netsight error
SNMP Contact Lost: No SNMP reply from device 10.23.255.10 caused by SNMP Error: Timeout[4098], last uptime was 23 Days 21:43:29.0
  • rmon stats show crc errors incrementing
-MDF-B5(su)->show rmon stats tg.1.50
Port: tg.1.50-------------------------------------
Index = 56
Owner = monitor
Data Source = ifIndex.50

Drop Events = 19869 Packets = 4649271
Collisions = 0 Octets = 381653675
Jabbers = 20 0 - 64 Octets = 28142
Broadcast Pkts = 16485 65 - 127 Octets = 972708
Multicast Pkts = 14004 128 - 255 Octets = 374997
CRC Errors = 19849 256 - 511 Octets = 151988
Undersize Pkts = 0 512 - 1023 Octets = 86040
Oversize Pkts = 0 1024 - 1518 Octets = 2906398
Environment
  • Securestack
  • All firmware versions
Cause
Layer-1 issue
Resolution
Troubleshooting steps:
  1.  Try swapping GBIC
   2.  Try Connecting cable to different switch, or different ports to rule out switch issue
   3.  If issue follows the cable, replace the cable

 
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