The allocated FIB entries was increasing with a rate of around 3000 per minute.
In the normal situation we must have around 1300 adjacencies.
We remove all BGP entries in the routing table of the MSFC. In that moment only 1000 routes remained in the Routing Table. But the number of allocated FIB entries was still increasing. And remained increasing for almost one hour.
The only way to fix the problem was rebooting the device.
Interrupt switching refers to the use of switching algorithms other than process switching. Examples include fast switching, optimum switching, Cisco Express Forwarding switching, Examine the output of the show interfaces switching command to see which interface is burdened with traffic. You can check the show ip interface command to see which switching method(s) are used on each interface. Re-enable interrupt switching on that interface. Remember that regular fast switching is configured on output interfaces: if fast switching is configured on an interface, packets that go out of that interface are fast-switched. Cisco Express Forwarding switching is configured on input interfaces. To create Forwarding Information Base (FIB) and adjacency table entries on a particular interface, configure Cisco Express Forwarding switching on all interfaces that route to that interface
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...