Example: Viewing Ethernet Ring Protection Status-Normal Ring Operation - Juniper JUNOS OS 10.4 Manual

Example: Viewing Ethernet Ring Protection Status—Normal Ring Operation
Router 1 Operational
Commands (Normal
Ring Operation)
Router 2 and Router 3
Operational
Commands (Normal
Ring Operation)
Copyright © 2012, Juniper Networks, Inc.
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:
user@router1> show protection-group ethernet-ring aps
Ethernet Ring Name Request/state
pg101 NR
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
ge-1/0/1 ge-1/0/1.1
ge-1/2/4 ge-1/2/4.1
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
pg101 idle
Restore Timer Quard Timer
disabled disabled
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
RAPS received
Local SF happened:
Remote SF happened:
NR event happened:
NR-RB event happened:
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:
user@router2> show protection-group ethernet-ring aps
Ethernet Ring Name Request/state
pg102 NR
Originator Remote Node ID
No 00:01:01:00:00:01
No Flush Ring Protection Link Blocked
No Yes
Forward State Ring Protection Link End
discarding Yes
forwarding No
Event Ring Protection Link Owner
NR-RB Yes
Operation state
operational
: 1
: 0
: 0
: 0
: 0
: 1
No Flush Ring Protection Link Blocked
No Yes
Chapter 13: Ethernet Ring Protection
171