Technical Documentation
Related Documentation
- MX Series
- Ethernet Ring Protection
- Example: Configuring Ethernet Ring Protection for MX Series Routers
- Example: Viewing Ethernet Ring Protection Status—Ring Failure Condition
- Additional Information
- Ethernet OAM
Example: Viewing Ethernet Ring Protection Status—Normal Ring Operation
Under normal operating conditions, when Ethernet ring protection is configured correctly, the ring protection link (RPL) owner (Router 1 in the configuration example) will see the following:
Router 1 Operational Commands (Normal Ring Operation)
user@router1> show protection-group ethernet-ring
aps Ethernet Ring Name Request/state No Flush Ring Protection Link Blocked pg101 NR No Yes Originator Remote Node ID Yes
Note that the ring protection link is blocked and the node is marked as the originator of the protection.
user@router1> show protection-group ethernet-ring
interface Ethernet ring port parameters for protection group pg101 Interface Control Channel Forward State Ring Protection Link End ge-1/0/1 ge-1/0/1.1 discarding Yes ge-1/2/4 ge-1/2/4.1 forwarding No Signal Failure Admin State Clear IFF ready Clear IFF ready
Note that the protection interface is discarding while the other interface is forwarding.
user@router1> show protection-group ethernet-ring
node-state Ethernet ring APS State Event Ring Protection Link Owner pg101 idle NR-RB Yes Restore Timer Quard Timer Operation state disabled disabled operational
Note that Router 1 is the owner and timers are disabled.
user@router1> show protection-group ethernet-ring
statistics group-name pg101 Ethernet Ring statistics for PG pg101 RAPS sent : 1 RAPS received : 0 Local SF happened: : 0 Remote SF happened: : 0 NR event happened: : 0 NR-RB event happened: : 1
Note that only minimal RAPS messages have been sent to establish the ring.
Under normal operating conditions, the other routers on the ring (Router 2 and Router 3) will see the following similar output:
Router 2 and Router 3 Operational Commands (Normal Ring Operation)
user@router2> show protection-group ethernet-ring
aps Ethernet Ring Name Request/state No Flush Ring Protection Link Blocked pg102 NR No Yes Originator Remote Node ID No 00:01:01:00:00:01
Router 3 will see almost identical information.
user@router2> show protection-group ethernet-ring
interface Ethernet ring port parameters for protection group pg102 Interface Control Channel Forward State Ring Protection Link End ge-1/2/1 ge-1/2/1.1 forwarding No ge-1/0/2 ge-1/0/2.1 forwarding No Signal Failure Admin State Clear IFF ready Clear IFF ready
Note that both interfaces are forwarding. Router 3 will see almost identical information.
user@router2> show protection-group ethernet-ring
node-state Ethernet ring APS State Event Ring Protection Link Owner pg102 idle NR-RB No Restore Timer Quard Timer Operation state disabled disabled operational
Note that Router 2 is not the owner. Router 3 will see almost identical information.
user@router2> show protection-group ethernet-ring
statistics group-name pg102 Ethernet Ring statistics for PG pg102 RAPS sent : 0 RAPS received : 1 Local SF happened: : 0 Remote SF happened: : 0 NR event happened: : 0 NR-RB event happened: : 1
Router 3 will see almost identical information.
Related Documentation
- MX Series
- Ethernet Ring Protection
- Example: Configuring Ethernet Ring Protection for MX Series Routers
- Example: Viewing Ethernet Ring Protection Status—Ring Failure Condition
- Additional Information
- Ethernet OAM
