ethernet ring protection switching configuration

Application Note ENT-AN1078

Ethernet Ring Protection Switching Configuration

Table of Contents

IntroductionThis document shows how to configure the Ethernet Ring Protection Switching (ERPS) for Microsemiswitches using the Web GUI and the ICLI commands. The following figure shows the simple three switchnetwork constructed to demonstrate these features.

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Configuring ERPS from the ICLI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Configuring ERPS from the Web GUI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Figure 1 • Ethernet Ring Protection Switching (ERPS) Model

July 2015 1

© 2015 Microsemi Corporation


Configuring ERPS from the ICLI

Initial Switch ConfigurationThe following commands disable STP and LLDP, and they enable C-Port on Port 1 and 2 on all switches.

#Configure port 1-2interface GigabitEthernet 1/1-2 #set C-Port switchport hybrid port-type c-port switchport mode hybrid #disable LLDP no lldp receive no lldp transmit #disable Spanning Tree Protocol no spanning-tree

Configuring MEP and ERPS on Switch 1 (RPL Owner)#create mep 1 on port 1mep 1 down domain port flow 1 level 0 interface GigabitEthernet 1/1#set vlan for MEP trafficmep 1 vid 3001#set id of peer mepmep 1 peer-mep-id 5#enable ccm, default is 1FPSmep 1 cc 0#enable RAPSmep 1 aps 0 rapsmep 2 down domain port flow 2 level 0 interface GigabitEthernet 1/2mep 2 mep-id 2mep 2 vid 3001mep 2 peer-mep-id 3mep 2 cc 0mep 2 aps 0 raps#create erps on port 1 and port 2erps 1 major port0 interface GigabitEthernet 1/1 port1 interface GigabitEthernet 1/2#set MEP ID for the corresponding porterps 1 mep port0 sf 1 aps 1 port1 sf 2 aps 2#set to RPL ownererps 1 rpl owner port1\#set protected VLANerps 1 vlan 1

Configuring MEP and ERPS on Switch 2 (RPL Neighbor)mep 1 down domain port flow 1 level 0 interface GigabitEthernet 1/1mep 1 mep-id 3mep 1 vid 3001mep 1 peer-mep-id 2mep 1 cc 0mep 1 aps 0 rapsmep 2 down domain port flow 2 level 0 interface GigabitEthernet 1/2mep 2 mep-id 4mep 2 vid 3001mep 2 peer-mep-id 6mep 2 cc 0mep 2 aps 0 raps

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Configuring ERPS from the Web GUI

erps 1 major port0 interface GigabitEthernet 1/1 port1 interface GigabitEthernet 1/2erps 1 mep port0 sf 1 aps 1 port1 sf 2 aps 2#set to RPL neighbourerps 1 rpl neighbor port0erps 1 vlan 1

Configuring MEP and ERPS on Switch 3mep 1 down domain port flow 1 level 0 interface GigabitEthernet 1/1mep 1 mep-id 5mep 1 vid 3001mep 1 peer-mep-id 1mep 1 cc 0mep 1 aps 0 rapsmep 2 down domain port flow 2 level 0 interface GigabitEthernet 1/2mep 2 mep-id 6mep 2 vid 3001mep 2 peer-mep-id 4mep 2 cc 0mep 2 aps 0 rapserps 1 major port0 interface GigabitEthernet 1/1 port1 interface GigabitEthernet 1/2erps 1 mep port0 sf 1 aps 1 port1 sf 2 aps 2erps 1 vlan 1Note: On Caracal (VSC7428/VSC7429). To set the CCM rate to 100FPS or 300FPS, the peer MAC

address must be known as shown here, Or set it to lower rate first, until the peer MAC address islearned, and then change it to a higher rate.

mep 1 peer-mep-id <peer mep id> mac <peer mac address>mep 1 cc 0 fr300s

Finally, the ERPS status can be checked with the show erps command.


Initial Switch ConfigurationUse the following steps to configure the ERPS features through the Web.

1. Connect switch 1 to switch 2 and switch 1 to switch3. Do not connect switch 2 to switch 3 to avoidcreating a loop. The web client is connected to switch 1.

2. Restore the default settings for all three switches.

3. Disable the DHCP client and set the proper static IP for each switch. In this example, switch 1 is192.0.2.1, switch 2 is 192.0.2.2 and switch 3 is 192.0.2.3.

4. To avoid conflict with ERPS disable spanning tree on all switches, as it is enabled by default.

5. Enable VLAN tag aware on all three switches. In VLAN configuration page, set port mode toHybrid port and port type to C-Port on port 1 and port 2 for each of the three switches.

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Creating a MEP on Switch 11. On switch 1, add a new MEP on port 1 by clicking MEP. Configure the MEP as shown, and click

Add New MEP.

Figure 2 • Switch 1 Port 1 MEP Configuration

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2. Add a new MEP on port 2 of switch 1 configured as shown, and click Add New MEP.

3. Edit MEP1 by clicking 1 under Instance of the MEP table. Configure the page as shown, and clickSave.


Figure 4 • Switch 1 MEP 1 Configuration

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The Unicast Peer MAC can remain empty because it will be learned by receiving the CCM from the peer

side. On Caracal (VSC7428/VSC7429), before it is learned, the CCM frame rate cannot be changed to

above 100/sec. If known, enter the peer MAC address manually.

4. Edit MEP2 by clicking 2 under Instance of the MEP table. Configure the MEP as shown, and clickSave.


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Configuring Switch 21. Add a new MEP on port 1 of switch 2.

2. Add a new MEP on port 2 of switch 2 configured as shown, and click Add New MEP.



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3. Edit MEP1 of switch 2 by clicking 1 under Instance of the MEP table. Configure the MEP asshown, and click Save.




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Configuring Switch 31. Add a new MEP on port 1 of switch 3.

2. Add a new MEP on port 2 of switch 3.



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4. Edit MEP2 of switch 3 by clicking 2 and configuring the MEP as shown, and click Save.



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Configuring ERPS on Switch 11. On switch 1, click ERPS to go to the Ethernet Ring Protection switching page. Add the Ring

Protection Link (RPL) owner as shown, and click Add New Protection Group.

2. Edit ERPS1 by clicking 1. Set the configuration as shown, and click Save.

Figure 14 • Add New Protection Group (Switch 1) Configuration

Figure 15 • ERPS 1 (Switch 1) Configuration

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3. Click VLAN Config to edit the protected VLAN.

4. After clicking Save, remember to connect switch 2 and switch 3. Because the RPL isdisconnected, the user will not be able to access switch 2 from switch 1.

5. Check the MEP table on switch 1, switch 2, and switch 3. Alarms should show green.

Figure 16 • Protected VLAN (Switch 1) Configuration

Figure 17 • MEP Status

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Configuring ERPS on Switch 2, the RPL Neighbor1. On switch 2, click ERPS followed by Add New Protection Group.

2. Edit ERPS1 by clicking 1. Configure the device as shown, and click Save.

Figure 18 • Add New Protection Group (Switch 2) Configuration

Figure 19 • ERPS 1 (Switch 2) Configuration

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3. Click VLAN Config to edit the VLAN.

Configuring ERPS on Switch 31. On switch 3, click ERPS followed by Add New Protection Group.

Figure 20 • ERPS VLAN (Switch 2) Configuration

Figure 21 • Add New Protection Group (Switch3)

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2. Edit ERPS1 by clicking 1. No action is required on switch 3. Keep the RPL owner at none.

3. Click VLAN Config to edit the VLAN.

Figure 22 • ERPS VLAN (Switch 3) Configuration

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Verifying ERPS1. Change the CCM rate starting from switch 3. Click on MEP > 2 and then use the frame rate pull

down to select 300 f/sec.

2. Change the CCM rate for MEP 1.

Figure 23 • Edit MEP 2 CCM Rate (Switch 3)


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3. Change the CCM rate on switch 1. Click on MEP > 1 and then use the frame rate pull down toselect 300 f/sec.


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5. Change the CCM rate on switch 2. Click on MEP > 1 and then use the frame rate pull down toselect 300 f/sec.



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7. On Switch 1, check ERPS status by clicking ERPS to ensure normal link status


Figure 29 • Switch 1 ERPS Status

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8. Disconnect the normal link for switch 1 and switch 3.

9. Restore the normal link for switch 1 and switch 3 to display the protection state as Pending.

Figure 30 • Disconnect Normal Link

Figure 31 • Restore Normal Link

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10. After WTR timeout, and clicking Refresh, it should show as Idle.

Figure 32 • Referesh ERPS Status

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VPPD-03586. 1.0. July 2015

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ethernet ring protection switching configuration

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