Can someone please let me know if the prefix
ip prefix-list emea seq 30 permit 10.9.1.0/24 ge 25 will include 10.9.1.0/24 network, or just 10.9.1.0./25, 10.9.1.0./26 etc if they existed?
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ge 25 suffix basically requires the prefix length to be 25 or higher (ge = greater than or equal).
In other words, the entry could be rephrased to: permit any network which is inside the network 10.9.1.0/24 and has a prefix length of 25 or higher. This would include 10.9.1.0/25, 10.9.1.0/26 as you have indicated (up to /32 as the
le n attribute is omitted) but not 10.9.1.0/24.
It would however also include things like 10.9.1.128/25 or 10.9.1.200/30, as all those networks are within the 10.9.1.0/24 network having a subnet mask greater than or equal to 25.
Another example would be
prefix-list emea seq 30 permit 10.9.1.0/24 ge 25 le 25.
This would exactly match the following two prefixes:
10.9.1.0/25 and 10.9.1.128/25
As the logic now is: permit any networks within the 10.9.1.0/24 range which prefix length is greater than or equal 25 and lower than or equal 25, in other words, exactly 25.