show ip bgp sum output
Posted on 2011-02-24
I am trying to understand memory consumtion for BGP routes. So the memory used would be between ip RIB,CEF, and BGP RIB.
In the output below what does "59 path entries" refer to. I am trying to understand the difference between network entries and path entries. Network appears to be the total unique prefixes in the BGP RIB but path entries is always a higher value? What is this and the meaning of the different line items taking up memory. I have looked at the cisco command reference and still don't quite get the path entries?
BGP router identifier 172.16.1.1, local AS number 100
BGP table version is 199, main routing table version 199
37 network entries using 2850 bytes of memory
59 path entries using 5713 bytes of memory
18 BGP path attribute entries using 936 bytes of memory
2 multipath network entries and 4 multipath paths
10 BGP AS-PATH entries using 240 bytes of memory