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Cisco Bug: CSCta53273 - N7K: EIRGP equal-cost route is 'Pending'

Last Modified

Feb 01, 2017

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases


Description (partial)


A Nexus 7000 may have routes installed in the IPv4 RIB that are marked
as "pending", i.e. these routes have not been pushed to the FIB and
are therefore not installed in the hardware.


N7K# show routing
IP Route Table for VRF "default", 1 ucast next-hops, 0 mcast next-hops, pending
   *via, Ethernet2/1.5, [170/51456], 00:00:10, eigrp-N7K, external


In theory, this issue could occur under many conditions with any
client. However, the only seen scenario, is when an EIGRP prefix is
withdrawn, e.g. due to a peer neighbour down event.

In relation to the above example, the original state is the following
ECMP route, which has been pushed to the FIB:

N7K# show routing
IP Route Table for VRF "default", 2 ucast next-hops, 0 mcast next-hops
   *via, Ethernet2/1.4, [170/51456], 00:00:25, eigrp-N7K, external
   *via, Ethernet2/1.5, [170/51456], 00:00:25, eigrp-N7K, external

The EIGRP peer is brought down, causing the event.
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