Thanks. That's very interesting. For the primary repairs, can you get the
percentages that require the directed forwarding? I'm curious to see if
the benefit comes from less restricted tunnels or the extension via the
single end-hop source routing.
For the U-turn alternates, on the topologies I've got, I found about 72%
node protection. That's a percentage of the src/dest pairs covered.
At 01:59 PM 11/22/2004, mike shand wrote:
At 12:39 22/11/2004 -0500, Alia Atlas wrote:
What can you get with a single primary repair?
Some examples of the percentage of node repairs which require secondaries
below. This is calculated by taking the number of repairs for node repair
which require a secondary repair divided by the total number of repairs.
Where a repair is a repair to a single neighbor's neighbor.
The repairs for node E failing would be
(Note that the 13% one is a hub and spoke like network which gives only
about 70% coverage for U-turns (link repair; I haven't simulated U-turns
for node repair). It is quite a nasty topology for any IPFRR mechanism)
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