First is IOS that support BGP, second Memory, third is the type of connection (FE, Serial, ATM).
If you are multihoming and want to received full BGP route (approximately 200K prefixes), the minimum memory requirement is 256MB recommended is 512MB. A 3800 series is recommended as it can support up to 1GB of memory and multiple network module.
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...