Example: Configuring Ethernet Ring Protection for MX Series Routers
This example configures Ethernet ring protection for three MX Series router nodes:
Example Topology
The links connecting the three MX Series routers are shown in Figure 1.
This example uses the following topology details for Ethernet ring protection:
Router 1 is the RPL owner. The node identification for Router 1 is MAC address 00:01:01:00:00:01.
The RPL link is ge-1/0/1.1 (this is also the R-APS messaging control channel).
Traffic flows among the nodes in the configured bridge domains. (That is, only the control channels are configured.)
Router 1’s east control channel interface is ge-1/0/1.1 (the RPL) and the west control channel interface is ge-1/2/4.1. The protection group is pg101.
Router 2’s east control channel interface is ge-1/0/2.1 (the RPL) and the west control channel interface is ge-1/2/1.1. The protection group is pg102.
Router 3’s east control channel interface is ge-1/0/3.1 (the RPL) and the west control channel interface is ge-1/0/4.1. The protection group is pg103.
Although not strictly required for physical ring protection, this example configures Ethernet OAM with MEPs.
Router 1 (RPL Owner) Configuration
To configure Router 1 (the RPL owner):
Configure the interfaces:
[edit]interfaces {ge-1/0/1 {vlan-tagging;encapsulation flexible-ethernet-services;unit 1 {encapsulation vlan-bridge;vlan-id 100;}}ge-1/2/4 {vlan-tagging;encapsulation flexible-ethernet-services;unit 1 {encapsulation vlan-bridge;vlan-id 100;}}irb {unit 0 {family inet {address address 192.1.1.11/24;}}}}Configure the bridge domain:
[edit]bridge-domains {bd1 {domain-type bridge;vlan-id 100;interface ge-1/2/4.1;interface ge-1/0/1.1;routing-interface irb.0;}}Configure the Ethernet ring protection group:
[edit]protocols {protection-group {ethernet-ring pg101 {node-id 00:01:01:00:00:01;ring-protection-link-owner;east-interface {control-channel ge-1/0/1.1;}ring-protection-link-end;west-interface {control-channel ge-1/2/4.1;}}}}Configure Ethernet OAM:
[edit]protocols {oam {ethernet {connectivity-fault-management {action-profile rmep-defaults {default-action {interface-down;}}maintenance-domain d1 {level 0;maintenance-association 100 {mep 1 {interface ge-1/0/1;remote-mep 2 {action-profile rmep-defaults;}}}}maintenance-domain d2 {level 0;maintenance-association 100 {mep 1 {interface ge-1/2/4;remote-mep 2 {action-profile rmep-defaults;}}}}}}}}
Router 2 Configuration
To configure Router 2:
Configure the interfaces:
[edit]interfaces {ge-1/0/2 {vlan-tagging;encapsulation flexible-ethernet-services;unit 1 {encapsulation vlan-bridge;vlan-id 100;}}ge-1/2/1 {vlan-tagging;encapsulation flexible-ethernet-services;unit 1 {encapsulation vlan-bridge;vlan-id 100;}}irb {unit 0 {family inet {address address 192.1.1.22/24;}}}}Configure the bridge domain:
[edit]bridge-domains {bd1 {domain-type bridge;vlan-id 100;interface ge-1/2/1.1;interface ge-1/0/2.1;routing-interface irb.0;}}Configure the Ethernet protection group:
[edit]protocols {protection-group {ethernet-ring pg102 {node-id 00:22:22:22:22:22;east-interface {control-channel ge-1/0/2.1;}west-interface {control-channel ge-1/2/1.1;}}}}Configure Ethernet OAM:
[edit]protocols {oam {ethernet {connectivity-fault-management {action-profile rmep-defaults {default-action {interface-down;}}maintenance-domain d1 {level 0;maintenance-association 100 {mep 2 {interface ge-1/2/1;remote-mep 1 {action-profile rmep-defaults;}}}}maintenance-domain d3 {level 0;maintenance-association 100 {mep 1 {interface ge-1/0/2;remote-mep 2 {action-profile rmep-defaults;}}}}}}}}
Router 3 Configuration
To configure Router 3:
Configure the interfaces:
[edit]interfaces {ge-1/0/4 {vlan-tagging;encapsulation flexible-ethernet-services;unit 1 {encapsulation vlan-bridge;vlan-id 100;}}ge-1/0/3 {vlan-tagging;encapsulation flexible-ethernet-services;unit 1 {encapsulation vlan-bridge;vlan-id 100;}}irb {unit 0 {family inet {address 192.1.1.33/24;}}}}Configure the bridge domain:
[edit]bridge-domains {bd1 {domain-type bridge;vlan-id 100;interface ge-1/0/4.1;interface ge-1/0/3.1;routing-interface irb.0;}}Configure the Ethernet protection group:
[edit]protocols {protection-group {ethernet-ring pg103 {node-id 00:33:33:33:33:33;east-interface {control-channel ge-1/0/3.1;}west-interface {control-channel ge-1/0/4.1;}}}}Configure Ethernet OAM:
[edit]protocols {oam {ethernet {connectivity-fault-management {action-profile rmep-defaults {default-action {interface-down;}}maintenance-domain d2 {level 0;maintenance-association 100 {mep 2 {interface ge-1/0/4;remote-mep 1 {action-profile rmep-defaults;}}}}maintenance-domain d3 {level 0;maintenance-association 100 {mep 2 {interface ge-1/0/3;remote-mep 1 {action-profile rmep-defaults;}}}}}}}}