14 Jan
2016
14 Jan
'16
9:38 p.m.
On Jan 14, 2016, at 3:02 PM, Peter Lothberg
<roll at Stupi.SE> wrote:
If costs are the same at both ends of a link, that will certainly
help. Then again, it is quite possible for two paths to have equal
cost, and if so, DECnet implementations will pick one of the two, in
a way that is not specified.
paul The values are somewhat arbitrary; it doesn't
really matter what
scheme you use but if you are inconsistent the routing may be
surprising.
The routing spec has a suggested algorithm (100,000/line speed)
which may have made sense in the old days but for modern networks
isn't terribly useful.
paul
What I wanted to get to was a scenario where traffic was symetric
between two nodes, eg, use the same links from a-b as b-a, it makes it
much easier to understand what's wrong when things behave funny...