Verifying the vlans on as1 – Juniper Networks JUNOS OS 10.4 User Manual

Page 197

Interface STP index Forward State
ge-2/0/5 24 forwarding
ge-2/1/1 25 forwarding

Meaning

The output displayed shows the STP index number used by each interface in ring instances

ring-1

and

ring-2

. The STP index controls the forwarding behavior for a set of VLANs on

the data channel of a ring instance on a ring interface. For ring instances, there are multiple
STP index numbers (here representing VLANs 200, 300, 500, and 600). The

Forward

State

shows whether the data channel is

forwarding

discarding

traffic. All data channels

are forwarding traffic.

Verifying the VLANs on AS1

Purpose

Verify the data channel logical interfaces and the VLAN IDs controlled by a ring instance
data channel.

Action

List dynamic VLAN membership:

user@as1>

show protection-group ethernet-ring vlan

Ethernet ring IFBD parameters for protection group ring-1

Interface Vlan STP Index Bridge Domain
ge-2/0/5 200 22 default-switch/bd200
ge-2/1/1 200 23 default-switch/bd200
ge-2/0/5 300 22 default-switch/bd300
ge-2/1/1 300 23 default-switch/bd300

Ethernet ring IFBD parameters for protection group ring-2

Interface Vlan STP Index Bridge Domain
ge-2/0/5 500 24 default-switch/bd500
ge-2/1/1 500 25 default-switch/bd500
ge-2/0/5 600 24 default-switch/bd600
ge-2/1/1 600 25 default-switch/bd600

Meaning

The output displayed shows the ring interfaces

ge-2/0/5

and

ge-2/1/1

in protection groups

ring-1

and

ring-2

. For

ring-1

, VLAN 200 and VLAN 300 are being supported on both

STP

Index 22

and

on bridge domains

bd200

and

bd300

. For

ring-2

, VLAN 500 and VLAN

600 are being supported on both

STP Index 24

and

on bridge domains

bd500

and

bd600

. The data channel controls the traffic on the VLAN IDs to facilitate load-balancing.

Documentation

Ethernet Ring Protection Using Ring Instances for Load Balancing on page 153

•

Ethernet Ring Protection on page 151

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:

177

Chapter 13: Ethernet Ring Protection