User manual
Table Of Contents
- Industrial Ethernet OSM/ESM Network Management
- Safety-Related Notices
- Contents
- Preface
- Introduction
- Important OSM/ESM Functions
- 2.1 Autonegotiation
- 2.2 Autocrossover
- 2.3 Transmission Rate and Duplicity
- 2.4 Factory Defaults and Protected Settings
- 2.5 Filtering Database (FDB Table)
- 2.6 Locked Ports
- 2.7 Mirroring
- 2.8 Traps
- 2.9 E-Mail Function
- 2.10 Event Log Table
- 2.11 Time of Day and Time- of - day Synchronization
- 2.12 Flow Control
- 2.13 BOOTP/DHCP
- 2.14 IP Configuration Using SIMATIC NET NCM PC, SIMATIC STEP 7 or the Primary Setup Tool
- 2.15 TELNET
- 2.16 Extended Redundant Configuration
- 2.17 Observer Function
- 2.18 Automatic Download of the Configuration
- Command Interpreter (CLI)
- Web-Based Management (WBM)
- 4.1 General Introduction
- 4.1.1 Restricted Functionality of the OSM/ESM Variants
- 4.2 Requirements
- 4.3 Connecting
- 4.4 Access Using Web-Based Management
- 4.5 User Interface of Web-Based Management
- 4.6 Management Menus
- 4.7 System
- 4.8 OSM/ESM Status
- 4.9 Agent Features
- 4.10 Switch Features
- 4.11 Port Status
- 4.12 Statistics Counters
- SNMP and RMON
- Upgrading/Downloading Software
- Notes on Troubleshooting
- Internet Browser Settings
- Connecting a PC with Hyperterminal to the Serial Port of the OSM/ ESM
- References
- Abbreviations/Acronyms
- Glossary
- Index
Web-Based Management (WBM)
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Industrial Ethernet OSM/ESM Network Management
C79000-G8976-C137-08
Aging
OSMs/ESMs automatically learn the source addresses of the nodes connected to
them. This information is used on the OSM/ESM to pass packets to the intended
recipients. This reduces the network load for the other nodes.
If the OSM/ESM does not receive a packet with a source address that matches a
learned address within the aging time, it deletes the address from the database.
This prevents packets being passed on incorrectly if, for example, a DTE is
connected to a different OSM/ESM port. The default for the aging time is 40
seconds. By setting aging to disabled, addresses are no longer automatically
deleted.
Flow Control
Using flow control, the OSM/ESM can slow down the reception of further packets
at the ports if the network is overloaded. Flow control must be activated separately
for the individual ports in the port mask. If the Flow Control Enable check box is
deactivated in the Switch window, the flow control mechanism is deactivated for all
ports regardless of the settings made in the port masks.
Set New Value
Follow the steps outlined below to change settings in the Switch window:
1. First, enable the check box for the individual parameters by clicking them or
select the mirrored port or monitor port from the list boxes.
2. Then click the Set New Values button to enter the values.