[HECnet] Multinet peerings...?

[Peter Lothberg]

> 
> > On Jan 14, 2016, at 3:02 PM, Peter Lothberg <roll at Stupi.SE> wrote:
> > 
> >> 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...
> 
> 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

If all links in HECNet where point-to-point, with the same metric on
both sides, it will most likely be almost *perfect* by itself. 

The complex movie is when they *THINK* they are all on the same
ethernet with metric 1.....

-P