5
GENERIC FUNCTIONS FOR REDUNDANT ETHERNET BOARDS
The following functions apply to all redundant Ethernet protocols.
5.1
FORWARDING
The MiCOM ALSTOM Ethernet switch products support store and forward mode. The switch forwards
messages with known addresses to the appropriate port. The messages with unknown addresses, the
broadcast messages and the multicast messages are forwarded out to all ports except the source port.
MiCOM ALSTOM switches do not forward error packets, 802.3x pause frames, or local packets.
5.1.1
PRIORITY TAGGING
802.1p priority tagging is enabled on all ports.
5.2
SIMPLE NETWORK MANAGEMENT PROTOCOL (SNMP)
Simple Network Management Protocol (SNMP) is a network protocol designed to manage devices in an IP
network. SNMP uses a Management Information Base (MIB) that contains information about parameters to
supervise. The MIB format is a tree structure, with each node in the tree identified by a numerical Object
Identifier (OID). Each OID identifies a variable that can be read or set using SNMP with the appropriate
software. The information in the MIB is standardized.
Each system in a network (workstation, server, router, bridge, etc.) maintains a MIB that reflects the status of
the managed resources on that system, such as the version of the software running on the device, the IP
address assigned to a port or interface, the amount of free hard drive space, or the number of open files. The
MIB does not contain static data, but is instead an object-oriented, dynamic database that provides a logical
collection of managed object definitions. The MIB defines the data type of each managed object and
describes the object.
The SNMP-related branches of the MIB tree are located in the internet branch, which contains two main
types of branches:
●
Public branches (mgmt=2), which are defined by the Internet Engineering Task Force (IETF).
●
Private branches (private=4), which are assigned by the Internet Assigned Numbers Authority (IANA).
These are defined by the companies and organizations to which these branches are assigned.
The following figure shows the structure of the SNMP MIB tree. There are no limits on the width and depth of
the MIB tree.
Chapter 8 - Redundant Ethernet
MiCOM P747
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P747-TM-EN-1.1
Содержание MiCOM P747 Agile
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Страница 20: ...Table of Figures MiCOM P747 xviii P747 TM EN 1 P747 TM EN 1 1...
Страница 21: ...INTRODUCTION CHAPTER 1...
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Страница 31: ...SAFETY INFORMATION CHAPTER 2...
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Страница 42: ...Chapter 2 Safety Information MiCOM P747 22 P747 TM EN 1 P747 TM EN 1 1...
Страница 43: ...HARDWARE DESIGN CHAPTER 3...
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Страница 74: ...Chapter 3 Hardware Design MiCOM P747 54 P747 TM EN 1 P747 TM EN 1 1...
Страница 75: ...CONFIGURATION CHAPTER 4...
Страница 76: ...Chapter 4 Configuration MiCOM P747 56 P747 TM EN 1 P747 TM EN 1 1...
Страница 117: ...PROTECTION FUNCTIONS CHAPTER 5...
Страница 118: ...Chapter 5 Protection Functions MiCOM P747 98 P747 TM EN 1 P747 TM EN 1 1...
Страница 160: ...Chapter 5 Protection Functions MiCOM P747 140 P747 TM EN 1 P747 TM EN 1 1...
Страница 161: ...MONITORING AND CONTROL CHAPTER 6...
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Страница 211: ...SCADA COMMUNICATIONS CHAPTER 7...
Страница 212: ...Chapter 7 SCADA Communications MiCOM P747 192 P747 TM EN 1 P747 TM EN 1 1...
Страница 259: ...REDUNDANT ETHERNET CHAPTER 8...
Страница 260: ...Chapter 8 Redundant Ethernet MiCOM P747 240 P747 TM EN 1 P747 TM EN 1 1...
Страница 293: ...CYBER SECURITY CHAPTER 9...
Страница 294: ...Chapter 9 Cyber Security MiCOM P747 274 P747 TM EN 1 P747 TM EN 1 1...
Страница 313: ...SETTINGS APPLICATION SOFTWARE CHAPTER 10...
Страница 314: ...Chapter 10 Settings Application Software MiCOM P747 294 P747 TM EN 1 P747 TM EN 1 1...
Страница 322: ...Chapter 10 Settings Application Software MiCOM P747 302 P747 TM EN 1 P747 TM EN 1 1...
Страница 323: ...BUSBAR COMMISSIONING TOOL CHAPTER 11...
Страница 324: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 304 P747 TM EN 1 P747 TM EN 1 1...
Страница 330: ...Chapter 11 Busbar Commissioning Tool MiCOM P747 310 P747 TM EN 1 P747 TM EN 1 1...
Страница 331: ...SCHEME LOGIC CHAPTER 12...
Страница 332: ...Chapter 12 Scheme Logic MiCOM P747 312 P747 TM EN 1 P747 TM EN 1 1...
Страница 348: ...Chapter 12 Scheme Logic MiCOM P747 328 P747 TM EN 1 P747 TM EN 1 1...
Страница 349: ...INSTALLATION CHAPTER 13...
Страница 350: ...Chapter 13 Installation MiCOM P747 330 P747 TM EN 1 P747 TM EN 1 1...
Страница 361: ...COMMISSIONING INSTRUCTIONS CHAPTER 14...
Страница 362: ...Chapter 14 Commissioning Instructions MiCOM P747 342 P747 TM EN 1 P747 TM EN 1 1...
Страница 387: ...MAINTENANCE AND TROUBLESHOOTING CHAPTER 15...
Страница 388: ...Chapter 15 Maintenance and Troubleshooting MiCOM P747 368 P747 TM EN 1 P747 TM EN 1 1...
Страница 403: ...TECHNICAL SPECIFICATIONS CHAPTER 16...
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Страница 443: ...COMMISSIONING RECORD APPENDIX B...
Страница 444: ...Appendix B Commissioning Record MiCOM P747 424 P747 TM EN 1 P747 TM EN 1 1...
Страница 448: ...Final Checks Result LEDs reset Yes No Appendix B Commissioning Record MiCOM P747 428 P747 TM EN 1 P747 TM EN 1 1...
Страница 449: ...WIRING DIAGRAMS APPENDIX C...
Страница 450: ...Appendix C Wiring Diagrams MiCOM P747 430 P747 TM EN 1 P747 TM EN 1 1...
Страница 456: ...Appendix C Wiring Diagrams MiCOM P747 436 P747 TM EN 1 P747 TM EN 1 1...
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