there is no definite answer to your question. The NPE-G1 capability to handle routes will be limited by the installed memory. Depending on the routing protocol, IOS version and other features being enabled this may vary because the available memory varies.
Be assured that f.e. the internet today with more than 200000 networks does not pose any problem. For a working example with more than 500 MB BGP table please login to
You're confusing CEF and dCEF. CEF is "just" a way of building a forwarding/adjacency table with packets being forwarded in the fast (interrupt) path. They're still processed by the CPU but its done in a different spot. (Grossly oversimplified, I know!)
dCEF is distributed CEF; where the forwarding/adjacency information is pushed out to intelligent line-cards which can then make forwarding decisions themselves without involving the RP. In this case the line cards need to have enough resources to store a full forwarding/adjacency table.
To answer your question: as far as I know, the NPE-G1 is just a software forwarding engine. The interfaces can forward packets rather quickly but they don't make routing decisions and thus it isn't "dCEF". The CPU builds a CEF table in RAM and routes the packets itself.
(If this were a cisco 7500-type setup with VIP modules which ran dCEF then yup, you'd also have to worry about the capabilities of the VIP.)
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
Im studying the 100-105 book by Odom and am currently on the topic of Port security. I purchased a used 2960 and I'm trying to follow a...
While deploying a number of 18xx/2802/3802 model access points (APs), which run AP-COS as their operating platform. It can be observed on some occasions that while many of their access points were able to join the fabric WLC withou...
I am going to design and build an LAN network under a tunnel underground with long distance between the switches.
I will have 2 Catalyst switches and 8 Industrial IE3000, and they will be connected with fiber.
For now I am planning on use Layer-2 s...