Flow Cache Maintenance
The size and the number of entries in the flow cache are platform dependent. Table A-1 lists the default values.
| Platform | Default Cache Entries | Default Memory for NetFlow Cache |
|---|---|---|
| AS5800, 4x00, 3600, 2600, 2500, 1600, 1400 | 4000 | 256 KB |
| 7200, RSP7000 | 64,000 | 4 MB |
| VIP with 16 MB DRAM | 2000 | 128 KB |
| VIP with 32 MB DRAM | 32,000 | 2 MB |
| VIP with 64 MB DRAM | 64,000 | 4 MB |
| VIP with 128 MB DRAM | 128,000 | 8 MB |
Each time a new flow is added to the NetFlow cache, the number of available NetFlow cache entries is checked. If only a few free flows remain, NetFlow attempts to age 30 of the existing flows using an accelerated timeout. If only one free flow remains, NetFlow automatically ages 30 existing flows regardless of their ...
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