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Cisco Bug: CSCun15854 - MCU 5300 locks up when connected to 100Mbps switch with duplex mismatch

Last Modified

May 24, 2018

Products (15)

  • Cisco TelePresence MCU 4500 Series
  • Cisco TelePresence MCU 4520
  • Cisco TelePresence MCU 4505
  • Cisco TelePresence MCU 5320
  • Cisco TelePresence MCU 4510
  • Cisco TelePresence MCU 4205
  • Cisco TelePresence MCU 4215
  • Cisco TelePresence MCU 4220
  • Cisco TelePresence MCU MSE 8420
  • Cisco TelePresence MCU MSE 8510
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Known Affected Releases

4.4(3.57) 4.5(1.45) 4.5(1.55)

Description (partial)

Symptom:
Customer's MCU 5320 experiencing a lockup and an eventual exit when endpoints connect over Port B. The lockup reports the following message: 

131843.946 NETWORK : Warning : 1: 0.0.0.0:49899 -> non-v6 Socket is not connected -> sendto(127, 40, 0x0, ##.##.##.##:3231) failed: 55 = No buffer space available

and: 

vfx write rv=-1 id=0x000000 errno=55 (No buffer space available)

Conditions:
MCU 5300 duplex mismatch.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
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