Comment by hdgvhicv
6 hours ago
If you design your network badly sure. Spend 3 months with BR once trying to get diverse routing out of one location to their two nearby exchanges, took a long time for them to work out what they needed to do as they had the two paths crossing in a single location for quite some time, but eventually they sorted it.
Bad design is the default - it takes hard work to have real redundancy, and if no one checks/demands it? Luck of the draw, or worse.