Preview Tool

Cisco Bug: CSCsz34607 - unresolved route gets installed in URIB with recursive routes.

Last Modified

Jun 17, 2016

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)


A Nexus 7000 may accept and install a recursive IPv4 or IPv6 route in
the RIB. The route will break forwarding for the prefix.

This can only occur when the network generates a looping route, and
this route's next-hop is directly attached, e.g., via, bgp, via Ethernet0, direct

i.e. the route is via, which is directly attached.

The following would be a valid route:, via, bgp, via, Ethernet0, ospf

i.e. here resolves to on Eth0.
Bug details contain sensitive information and therefore require a 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.