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| author |   Neale Ranns <nranns@cisco.com> | 2016-10-03 13:05:48 +0100 |
|---|---|---|
| committer |   Damjan Marion <dmarion.lists@gmail.com> | 2016-10-07 21:32:24 +0000 |
| commit | 3ee44040c66cbe47ff292ac7fb0badccbe2afe6d (patch) | |
| tree | a52a4dd0750467845f237ee5e4e88aa95ea11bab /vppinfra | |
| parent | 4a7e58bf481adb843707eec4a81213776a6d5212 (diff) | |
unicast RPF for FIB2.0
In a heirarchical FIB performing a unicast RPF check would require the traversal of the data-plane graph to seek out all the adjacency objects and then read those to find their interface. This is not efficient. Instead, for each path-list we construct a list of unique input interfaces and link this uRPF-list against the entry in the prefix table. In the data-plane the uRPF list can be retrieved from the load-balance lookup result and the RPF check is a simple and efficient walk across the minimal interface list. The uRPF-list is maintained as the routing heirarchy changes, in a similar way to the data-plane object graph.
We also provide a knob to allow an arbitrary prefix to pass the loose check.
Change-Id: Ie7c0ae3c4483ef467cfd5b136ee0315ff98ec15b
Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'vppinfra')
0 files changed, 0 insertions, 0 deletions