| The level of the OSI model | Convergence Time, с | Mechanisms for detecting damage |
SDH/SONET | Physical, canal | <5 × 10−6 | Triggers the physical layer, APS |
SRP (802.17) | Physical, canal | <5 × 10−6 | Posts physical layer |
Ethernet (STP) | Physical, canal | 1 - 2 (802.1 w) 30 - 50 (802.1 d) | BPDU about the network topology changes, producing a timeout BPDU |
MPLS-TE | The channel, Net | <10−5 | SDH/SONET The alarm message, Timeouts RSVP-hello packets |
IP (IGP) | Net | 2 - 5 (for LS) >10 (for DV) | Timeout service messages |