
C
HAPTER
15
| Basic Administration Protocols
Ethernet Ring Protection Switching
– 430 –
Figure 252: ERPS Ring Components
Configuration Guidelines for ERPS
1.
Create an ERPS ring (
): The ring name is used
as an index in the G.8032 database.
2.
Configure the east and west interfaces (
): Each node on the ring connects to it through two ring ports.
Configure one port connected to the next node in the ring to the east
(or clockwise direction) and another port facing west in the ring.
3.
Configure the RPL owner (
Configure Domain – Configure Details
):
Configure one node in the ring as the Ring Protection Link (RPL) owner.
When this switch is configured as the RPL owner, the west ring port is
set as being connected to the RPL. Under normal operations (Idle
state), the RPL is blocked to ensure that a loop cannot form in the ring.
If a signal failure brings down any other link in the ring, the RPL will be
unblocked (Protection state) to ensure proper connectivity among all
ring nodes until the failure is recovered.
4.
Configure ERPS timers (
Configure Domain – Configure Details
): Set the
Guard timer to prevent ring nodes from receiving outdated R-APS
messages, the Hold-off timer command to filter out intermittent link
faults, and the WTR timer command to verify that the ring has
stabilized before blocking the RPL after recovery from a signal failure.
5.
Configure the ERPS Control VLAN (
): Specify the control VLAN (CVLAN) used to pass R-APS ring
maintenance commands. The CVLAN must NOT be configured with an
IP address. In addition, only ring ports may be added to the CVLAN
(prior to configuring the VLAN as a CVLAN). No other ports can be
members of this VLAN (once set as a CVLAN). Also, the ring ports of the
CVLAN must be tagged. Failure to observe these restrictions can result
in a loop in the network.
6.
Enable ERPS (
): Before enabling a ring as described in
the next step, first globally enable ERPS on the switch. If ERPS has not
yet been enabled or has been disabled, no ERPS rings will work.
E
ast
Port
W
est
Port
RPL Owner
CC
Messages
RPL
x
CC
Messages
(
I
d
l
e
State)
Summary of Contents for DG-FS4526E
Page 4: ...ABOUT THIS GUIDE 4...
Page 34: ...CONTENTS 34...
Page 50: ...TABLES 50...
Page 52: ...SECTION I Getting Started 52...
Page 62: ...CHAPTER 1 Introduction System Defaults 62...
Page 80: ...CHAPTER 2 Initial Switch Configuration Managing System Files 80...
Page 82: ...SECTION II Web Configuration 82...
Page 100: ...CHAPTER 3 Using the Web Interface Navigating the Web Browser Interface 100...
Page 128: ...CHAPTER 4 Basic Management Tasks Resetting the System 128...
Page 166: ...CHAPTER 5 Interface Configuration VLAN Trunking 166...
Page 198: ...CHAPTER 6 VLAN Configuration Configuring VLAN Mirroring 198...
Page 516: ...CHAPTER 17 IP Services Displaying the DNS Cache 516...
Page 562: ...CHAPTER 19 Using the Command Line Interface CLI Command Groups 562...
Page 652: ...CHAPTER 22 SNMP Commands 652...
Page 660: ...CHAPTER 23 Remote Monitoring Commands 660...
Page 714: ...CHAPTER 24 Authentication Commands Management IP Filter 714...
Page 802: ...CHAPTER 27 Interface Commands 802...
Page 824: ...CHAPTER 29 Port Mirroring Commands RSPAN Mirroring Commands 824...
Page 846: ...CHAPTER 32 Address Table Commands 846...
Page 874: ...CHAPTER 33 Spanning Tree Commands 874...
Page 886: ...CHAPTER 34 ERPS Commands 886...
Page 928: ...CHAPTER 35 VLAN Commands Configuring Voice VLANs 928...
Page 942: ...CHAPTER 36 Class of Service Commands Priority Commands Layer 3 and 4 942...
Page 998: ...CHAPTER 38 Multicast Filtering Commands Multicast VLAN Registration 998...
Page 1022: ...CHAPTER 39 LLDP Commands 1022...
Page 1064: ...CHAPTER 40 CFM Commands 1064...
Page 1084: ...CHAPTER 42 Domain Name Service Commands 1084...
Page 1090: ...CHAPTER 43 DHCP Commands DHCP Client 1090...
Page 1122: ...CHAPTER 44 IP Interface Commands IPv6 Interface 1122...
Page 1124: ...SECTION IV Appendices 1124...
Page 1130: ...APPENDIX A Software Specifications Management Information Bases 1130...
Page 1152: ...COMMAND LIST 1152...
Page 1161: ......
Page 1162: ...DG FS4526E 042012 HW R01...