Failures, Fail-overs and Repairs
Bad news does not travel fast…
Repairs (Tup) exhibit similar convergence properties as long-short ASPath fail-over
Failures (Tdown) and short-long fail-overs (e.g. primary to secondary path) also similar
- Slower than Tup (e.g. a repair)
- 60% take longer than two minutes
- Fail-over times degrade the greater the degree of multi-homing!