Guest

Preview Tool

Cisco Bug: CSCuo07358 - N5K/N6K: FWM process crash due to an improper MET exhaustion handling

Last Modified

Sep 25, 2018

Products (10)

  • Cisco Nexus 6000 Series Switches
  • Cisco Nexus 5596UP Switch
  • Cisco Nexus 5548P Switch
  • Cisco Nexus 6004 Switch
  • Cisco Nexus 5672UP Switch
  • Cisco Nexus 6001 Switch
  • Cisco Nexus 56128P Switch
  • Cisco Nexus 5696Q Switch
  • Cisco Nexus 5548UP Switch
  • Cisco Nexus 5596T Switch

Known Affected Releases

7.0(1)N1(0.72) 7.0(8)N1(1)

Description (partial)

Symptom:
A Nexus 5K/6K can crash in FWM process leading upto reboot of the switch when Multicast Expansion Table(MET) table is exhausted.

Conditions:
MET table is exceeded on a N5K/6K configured for multicast routing. Syslog messages such as following would be seen
2016 Dec 21 17:46:23.491 N6001-A %$ VDC-1 %$ %FWM-2-MET_PTR_RESOURCE_EXHAUSTION: Met pointer exhausted
2016 Dec 21 17:46:23.504 N6001-A %$ VDC-1 %$ last message repeated 5 times
2016 Dec 21 17:46:23.504 N6001-A %$ VDC-1 %$ %FWM-2-MET_INDEX_RESOURCE_EXHAUSTION: Met index exhausted
2016 Dec 21 17:46:23.519 N6001-A %$ VDC-1 %$ last message repeated 1 time
2016 Dec 21 17:46:23.519 N6001-A %$ VDC-1 %$ %FWM-2-MET_PTR_RESOURCE_EXHAUSTION: Met pointer exhausted
2016 Dec 21 17:46:23.571 N6001-A %$ VDC-1 %$ last message repeated 14 times
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.