Subnet Toolsand other network tips

Route summarisation

I found a very clever site that does route summarisation from a list. This is ideal if you dump out a copy of your routing table and want to see where the routes can be summarised. It’s also useful if you have subnets for a firewall rule that you want to consolidate.

http://www.netmatics.net/FreeTools/IPv4SupernetTools/SupernetCalc

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