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Cisco Bug: CSCta98990 - u6rib service exits with mbest loop

Last Modified

Feb 01, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)


On a Nexus 7000 the u6rib service may exit, causing the system to
reload or perform a stateful switchover.


This can occur when an IPv6 MP-BGP Multicast session is established,
and an "mbest" route is installed into the u6rib which causes a
routing loop.
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Bug Details Include

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