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Is it possible to simplify the routing table based on the local topology? In other words, if I have a core router that has 100 local peers, can I take the full
by jewel 10y ago
Is it possible to simplify the routing table based on the local topology? In other words, if I have a core router that has 100 local peers, can I take the full routing table and find multiple entries that have the same common prefix and the same next hop and combine them, reducing the number of entries that need to be kept in memory?
I imagine if this provided potential gains that it'd already be a known technique, but I can't seem to find any information about it one way or the other.
- amazon_not 10y agoIt's called route aggregation or summarization. The problem is that the routing table is not static, but changes constantly. You can't just aggregate once, you'll have to deaggregate and update the routing table with each route update. You also have to be careful that you don't lose information when you aggregate routes, otherwise you'll end up with routing problems.