I've searched the WAN forum and didn't find anything that specifically answered my question so here goes:
I've got a 3745 with 512 MB and I'd like to now receive full routes from both of my providers. Currently we are receiving only a handful of local provider routes due to limitations on our previous hardware. I use neighbor weight to ensure there is a default path out for those routes I do not receive, which is most of them. Note: I run BGP and have 2 ISPs more for uptime reliability rather than for performance.
While I think the 3745 can support full routes from 2 providers with 512MB ram, I was thinking about filtering out all received /24 announcements and then rely on a neighbor weight as a way out for any routes that are not found. My hope is that this could cut the ram consumption way down and keep the number of routes to a less CPU-intensive number.
Question 1: Does this make sense? Am I gaining anything here?
Question 2: Can someone give me an example of how to filter these small prefixes out yet giving them a default route (if the neighbor weight isn't the way to go).
Thanks in advance,