MPLS OAM
MPLS OAM tests connectivity monitoring, fault diagnostics, and MPLS service quality. Peresvet ST can define a label stack; enable CC/CV, AIS/LCK, delay measurement, and loss measurement; and associate OAM with a particular interface or MPLS-TP LSP.
Table 211 — MPLS OAM Parameters
| Name | Description | Value |
|---|---|---|
| Instance ID | MPLS OAM instance identifier | Specify a unique number |
| Network interface | Interface on which OAM operates | Select a Control Plane interface |
| Label stack | MPLS labels to test | Add the label, EXP, and TTL for each entry |
| Transport label / EXP / TTL | Transport label and header parameters | Used for LSP/OAM tests |
| PW label / EXP / TTL | Pseudowire label and header parameters | Used for PW services |
| CC enabled | Continuity Check | Enable for regular connectivity checks |
| CC interval | CC message interval | 1000 by default |
| CV enabled | Connectivity Verification | Enable to verify the correct path |
| MEP ID / Remote MEP ID | Local and remote maintenance endpoint identifiers | Specify according to the testbed |
| Global ID / Node ID | MPLS-TP/OAM endpoint identifiers | Set when MPLS-TP is used |
| Tunnel num / LSP num | Tunnel and LSP identifiers | Used to associate OAM with MPLS-TP |
| AIS enabled / interval | Alarm Indication Signal | Enable to test fault signaling |
| LCK enabled / interval | Lock Instruct | Enable to test administrative-lock state |
| DM enabled / interval | Delay Measurement | Enable to measure latency |
| LM enabled / interval | Loss Measurement | Enable to measure loss |
A label stack and CC/CV are sufficient for a basic connectivity test. For operational MPLS service testing, also enable DM/LM and compare the results with the DUT's quality-of-service policies.