I was doing some testing with eigrp based on the attached diagram
Metric weights 0 0 0 1 0 0 command was used under EIGRP so that only delay influences the metric. The metrics were configured as follows
R1 - R2 delay 1
R2 - R4 delay 1
R1 - R3 delay 2
R3 - R4 delay 1
R4 loop - delay 1
This resulted in R1 choosing the path via R2 (FD=768) for the loopback and the path via R3(1024) as a FS as expected
Now i shut down the interface at R2 connecting to R1
Since the FS via R3 was available, the path was immediately chosen in the routing table. The FD didn't get updated as the route never went active.
I manipulated the metric a bit further by changing the delay between R1-R2 to 3
Then i unshut the interface at R2 towards R1
Now the path via R2 was selected as FS (FD=1280). If now i shut down the interface connecting to R3, the FD would still not be updated as it can find as FS in the topology.
If the metric changes again in such a manner that the delay between R3-R4 becomes 2, then the path via R3 is not chosen as FS (as AD=FD) and hence would result in a Dual computation of the route in the event of failure eventhough the FS condition would have been satisfied had the FD been updated earlier
Nothing except clearing the EIGRP process at R1 seems to update the FD and reflect the true vlaue
So does it make sense to update the FD when FS route is installed in the RT
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.