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ge-2/0/4 300 44 default—switch/bd300
ge-2/0/8 300 45 default-switch/bd300
Ethernet ring IFBD parameters for protection group ring-2
Interface Vlan STP Index Bridge Domain
ge-2/0/4 500 46 default—switch/bd500
ge-2/0/8 500 47 default-switch/bd500
ge-2/0/4 600 46 default—switch/bd600
ge-2/0/8 600 47 default-switch/bd600
Meaning The output displayed shows the ring interfaces ge-2/0/4 and ge-2/0/8 in protection
groupsring-1 andring-2. For ring-1,VLAN 200 andVLAN 300 are being supportedon both
STP Index 44 and 45 on bridge domains bd200 and bd300. For ring-2, VLAN 500 and
VLAN 600 are being supported on both STP Index 46 and 47 on bridge domains bd500
and bd600. The data channel controls the traffic on the VLAN IDs to facilitate load
balancing.
Verifying the Ethernet Protection Ring on AS1
Purpose Verify that ERP is enabled on AS1.
Action Show the status of the ring APS (R-APS) messages to determine if there is a ring failure:
user@as1> show protection-group ethernet-ring aps
Ethernet Ring Name Request/state No Flush Ring Protection Originator Remote
Node ID
Link Blocked
Ring-1 NR No Yes No
00:21:59:03:ff:d0
Ring-2 NR No Yes No
13:22:af:31:fc:00
Meaning Theoutput displayedshows that protectiongroupsring-1andring-2 have aRequest/state
of NR,meaningthere isno requestfor APS on thering. Ifa Request/state of SFis displayed,
it indicates there is a signal failure on the ring. The output also shows that the ring
protection link is not blocked. The No Flush field displays No, indicating that MAC
addresses will be flushed when the ring nodes receive this message first time. A value of
Yes would indicate MAC address flushing is not needed. The Originator field for ring-1 and
ring-2 displays No, indicating that this node is not the R-APS originator.
Verifying the Data Channels on AS1
Purpose Verify the forwarding state of the data channel.
Action List the interfaces acting as the control channels and their respective data channels
(represented by the STP index number):
user@as1>show protection-group ethernet-ring data-channel
Ethernet ring data channel parameters for protection group ring-1
Interface STP index Forward State
ge-2/0/5 22 forwarding
ge-2/1/1 23 forwarding
169Copyright © 2010, Juniper Networks, Inc.
Chapter 13: Ethernet Ring Protection