Minimum requirement is a 128MB, but 256M would bea good start.
The number of prefixes in the Internet routing table is increasing day by day. 100,000 routes in the internet table consumes roughly 70 MB of memory. That would mean that you will also need additional memory for decompressing and storing IOS, since you are having 7200, you will run CEF, which will require more memory.
The following link shows a steady growth in Internet routing table
128 minimum, 256 preferred, but in most cases, if you dont require full routes, you can get by with less. If you are not using more than two seperate ISP's you really do not require full routes. Just ask the ISP's to send partial or local routes. If you look at your mem usage while carrying full routes, most of the mem is just eaten by the BGP table.
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 customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...