Hirschmann RS40 series User manual

Redundancy L2E
Release 4.1 03/08
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User Manual
Redundancy Configuration
Industrial ETHERNET (Gigabit) Switch
RS20/RS30/RS40, MS20/MS30, OCTOPUS

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© 2008 Hirschmann Automation and Control GmbH
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Content
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Content
About this Manual 5
Key 6
1 Introduction 9
1.1 Comparison of the redundancy procedures 10
2 HIPER-Ring 11
2.1 Configuring HIPER-Ring Version 1 13
2.2 Configuring HIPER-Ring Version 2 (MRP Draft) 17
3 Redundant coupling 21
3.1 The variants of redundant coupling 22
3.2 Configuring the redundant coupling 24
3.2.1 STAND-BY switch 24
3.2.2 One-Switch coupling 27
3.2.3 Two-Switch coupling 33
3.2.4 Two-Switch coupling with control line 40
4 Rapid Spanning Tree 49
4.1 The Spanning Tree Protocol 50
4.1.1 The tasks of the STP 50
4.1.2 Bridge parameters 51
4.1.3 Bridge Identifier 51
4.1.4 Root Path Costs 52
4.1.5 Port Identifier 53
4.2 Rules for creating the tree structure 54
4.2.1 Bridge information 54
4.2.2 Setting up the tree structure 54
4.3 Example of specifying the root paths 56
4.4 Example of manipulating the root paths 58
4.5 Example of manipulating the tree structure 60

Content
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4.6 The Rapid Spanning Tree Protocol 61
4.6.1 Port roles 61
4.6.2 Port states 63
4.6.3 Spanning Tree Priority Vector 63
4.6.4 Fast reconfiguration 64
4.6.5 Configuring the Rapid Spanning Tree 65
A Reader´s comments 73
B Index 75
C Further support 77

About this Manual
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About this Manual
The “Redundancy Configuration” user manual contains all the information
you need to select a suitable redundancy procedure and configure it.
The “Basic Configuration” user manual contains all the information you need
to start operating the device. It takes you step by step from the first startup
operation through to the basic settings for operation in your environment.
The “Installation” user manual contains a device description, safety instruc-
tions, a description of the display, and all the other information that you need
to install the device before you begin with the configuration of the device.
The “Industry Protocols” user manual describes how the device is connected
by means of a communication protocol commonly used in the industry, such
as EtherNet/IP and PROFINET.
The "Web-based Interface" reference manual contains detailed information
on using the Web interface to operate the individual functions of the device.
The "Command Line Interface" reference manual contains detailed informa-
tion on using the Command Line Interface to operate the individual functions
of the device.
The Network Management Software HiVision provides you with additional
options for smooth configuration and monitoring:
XEvent logbook.
XConfiguration of „System Location“ and „System Name“.
XConfiguration of the network address range and SNMP parameters.
XSaving the configuration on the device.
XSimultaneous configuration of multiple devices.
XConfiguration of the port display color red for a connection error.

Key
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Key
The designations used in this manual have the following meanings:
Symbols used:
XList
Work step
Subheading
Link Indicates a cross-reference with a stored link
Note: A note emphasizes an important fact or draws your
attention to a dependency.
Courier ASCII representation in user interface
Execution in the Web-based Interface user interface
Execution in the Command Line Interface user interface
Router with firewall
Switch with firewall
Router
Switch
Bridge
Hub

Key
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A random computer
Configuration Computer
Server
PLC -
Programmable logic
controller
I/O -
Robot

Key
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Introduction
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1 Introduction
The device contains a range of redundancy functions:
XHIPER-Ring
XRedundant coupling of HIPER-Rings and network segments
XRapid Spanning Tree Algorithm (RSTP)
Three tools are available for operating these functions:
XWeb-based Management (supplied with the Switch)
for convenient agent configuration (see Reference Manual -
Web-based Interface).
XCommand Line Interface (supplied with the Switch)
for setting elementary functions (see reference manual – Command Line
Interface).
XHiVision Network Management
for convenient cross-agent configuration
(see manual – HiVision Hirschmann Network Management).

Introduction
10
1.1 Comparison of the redundancy procedures
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1.1 Comparison of the
redundancy procedures
RSTP HIPER-Ring
Version 1, 2
HIPER-Ring
Version 3
Redundant
coupling
Link aggrega-
tion
Switching time < 30 s,
typically < 1 s
(STP < 30 s)
depends
heavily on the
number of
Switches
< 0.5 s
Practically in-
dependent of
the number of
Switches
< 10 ms
With 5 Switch-
es in the ring.
With more
than 5 Switch-
es, the switch-
ing time
increases.
typically 0.15 s -
Network topol-
ogy
Random struc-
ture
Ring Ring Coupling of
network seg-
ment/rings via
a main line
and a redun-
dant line
Coupling of
network seg-
ments via mul-
tiple active
lines with
dynamic load
distribution
Table 1: Features of the redundancy procedures

HIPER-Ring
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2 HIPER-Ring
The concept of the HIPER-Ring enables the construction of high-availability,
ring-shaped network structures.
Using the RM function (Redundancy Manager) of a Switch with the L2E, L2P,
L3E or L3P software, you can close both ends of a backbone in a line
structure to a redundant ring, the HIPER-Ring (see fig. 1).
Within a HIPER-Ring Version 1, any combination of RS1, RS2-../..,
RS2-16M, RS2-4R, RS20, RS30, RS40, MICE, PowerMICE, MS 20, MS 30,
RSR20, RSR30, MACH 1000, MACH 3000 and MACH 4000 is possible.
Within a HIPER-Ring Version 2 (MRP Draft), any combination of devices that
support this function is possible.
Within a HIPER-Ring Version 3, any combination of RSR20, RSR30 and
MACH 1000 is possible.
If a section is down, the ring structure of a
XHIPER-Ring Version 1 of up to 50 devices typically transforms back to a
line structure within 150 ms (adjustable to max. 300 ms/500 ms).
XHIPER-Ring Version 2 of up to 50 devices typically transforms back to a
line structure within 150 ms (adjustable to max. 200 ms/500 ms).
XHIPER-Ring Version 3 of up to 5 devices typically transforms back to a
line structure within 5 ms (maximum 10 ms). If a larger number of devices
is being used, the reconfiguration time increases.

HIPER-Ring
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Figure 1: Line and redundant ring
Main line
Redundant line
Redundant Ring
Line
Redundancy Manager On

HIPER-Ring
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2.1 Configuring HIPER-Ring Version 1
13
2.1 Configuring HIPER-Ring
Version 1
Note: Before you connect the redundant line, you must complete the
configuration of HIPER-Ring Version 1.
You thus avoid loops during the configuration phase.
Note: Configure each HIPER-Ring device.
Set up the network to meet your requirements.
Select the Redundancy:HIPER-Ring dialog.
Select Version 1.
Note: As an alternative to using software to configure HIPER-Ring
Version 1, with devices RS20/30/40 and MS20/30 you can also use a
DIP switch to enter a number of settings for HIPER-Ring Version 1. You
can also use this DIP switch to enter a setting for whether the configu-
ration via DIP switch or the configuration via software has priority. The
state on delivery is “Software Configuration”.
For each device, you enter the desired ring ports 1 and 2.
The following settings are required for the ring ports (select the
Basic Settings:Port Configuration dialog):
Bit rate 100 Mbit/s 1000 Mbit/s
Autonegotiation
(automatic configuration)
Off On
Port On On
Duplex Full –
Table 2: Port settings for ring ports

HIPER-Ring
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2.1 Configuring HIPER-Ring Version 1
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Note: When using 100 Mbit/s with twisted pair cables, avoid the combi-
nation of autonegotiation “off” and cable crossing “automatic”. Use
crossover cables with 100 Mbit/s.
Display in “Operation” field:
Active: this port is switched on and has a link.
Inactive: this port is switched off or has no link.
At exactly one device, you switch the redundancy manager on at the
ends of the line.
Select the desired value in the “Ring Recovery” frame for the device
for which you have activated the redundancy manager.
Note: Settings in the “Ring Recovery” frame are ineffective for devices
that are not the redundancy manager.
Note: If selecting the smaller value for the ring recovery does provide
the ring stability neccesary to meet the requirements of your network,
you select 500 ms.
Figure 2: Selecting HIPER-Ring version, entering ring ports, enabling/
disabling redundancy manager and selecting ring recovery
Note: Deactivate the Spanning Tree protocol for the ports connected to
the redundant ring, because the Spanning Tree and the Ring
Redundancy work with different reaction times.

HIPER-Ring
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2.1 Configuring HIPER-Ring Version 1
15
Note: If you used the DIP switch to activate the function of HIPER-Ring
Version 1, RSTP is automatically switched off.
Now you connect the line to the ring. To do this, you connect the two
devices to the ends of the line using their ring ports.
The displays in the “Redundancy Manger Status” frame mean:
– “Active (redundant line)”: The ring is open, which means that a data
line or a network component within the ring is down.
– “Inactive”: The ring is closed, which means that the data lines and
network components are working.
The displays in the “Information” frame mean:
– „“Redundancy guaranteed”: One of the lines affected by the function
can fail, whereby the redundant line will then take over the function
of the failed line.
– „“Configuration failure”: The function is incorrectly configured or
there is an error on ringport link.
Figure 3: Display: Redundancy Manager Status and Information
Note: If VLANS are configured, note the VLAN configuration of the ring
ports.
In the configuration of HIPER-Ring Version 1, you select for the ring
ports
– VLAN ID 1 and
– VLAN membership Uin the static VLAN table

HIPER-Ring
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2.1 Configuring HIPER-Ring Version 1
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Note: When you switch from a normal port to a ring port with the DIP
switch, the device makes the required settings for the ring ports in the
configuration table. The port which has been switched from a ring port
to a normal port keeps the ring port settings. These settings remain
changeable for all ports.

HIPER-Ring
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2.2 Configuring HIPER-Ring Version 2 (MRP
17
2.2 Configuring HIPER-Ring
Version 2 (MRP Draft)
Note: Before you connect the redundant line, you must complete the
configuration of HIPER-Ring Version 2.
You thus avoid loops during the configuration phase.
Note: Configure each HIPER-Ring device.
Set up the network to meet your requirements.
Select the Redundancy:HIPER-Ring dialog.
Select Version 2 (MRP Draft).
For each device, you enter the desired ring ports 1 and 2.
The following settings are required for the ring ports (select the
Basic Settings:Port Configuration dialog):
Bit rate 100 Mbit/s 1000 Mbit/s
Autonegotiation
(automatic configuration)
Off On
Port On On
Duplex Full –
Table 3: Port settings for ring ports
Note: When using 100 Mbit/s with twisted pair cables, avoid the combi-
nation of autonegotiation “off” and cable crossing “automatic”. Use
crossover cables with 100 Mbit/s.

HIPER-Ring
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2.2 Configuring HIPER-Ring Version 2 (MRP
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Display in “Operation” field:
forwarding: this port is switched on and has a link.
blocked: this port is blocked and has a link.
disabled: this port is switched off
not connected: this port has no link.
At exactly one device, you switch the redundancy manager on at the
ends of the line.
Figure 4: Selecting HIPER-Ring version, entering ring ports and enabling/
disabling redundancy manager
If a device in the ring does not support the advanced mode for fast
switching times, you deactivate the advanced mode in the redun-
dancy manager, in the “Configuration Redundancy Manager” frame.
All Hirschmann devices that support the HIPER-Ring Version 2
(MRP Draft) also support the advanced mode.
Note: Deactivate the Spanning Tree protocol for the ports connected to
the redundant ring, because the Spanning Tree and the Ring
Redundancy work with different reaction times.
The “VLAN” frame enables you to assign HIPER-Ring Version 2 to a
VLAN.

HIPER-Ring
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2.2 Configuring HIPER-Ring Version 2 (MRP
19
If VLANs are configured, then in the “VLAN” frame you select
- VLAN ID 0, if the MRP-Ring configuration is not to be assigned to
a VLAN.
Note the VLAN configuration of the ring ports. Then select for the
ring ports
- VLAN ID 1 and
- VLAN membership U in the static VLAN table
- a VLAN ID >0, if the MRP-Ring configuration is to be assigned to
this VLAN.
Select this VLAN ID in the MRP-Ring configuration for all devices in
this MRP-Ring.
Note the VLAN configuration of the ring ports. For all ring ports in this
MRP-Ring, select
- this VLAN ID and
- VLAN membership U in the static VLAN table.
Select the desired value in the “Ring Recovery” frame for the device
for which you have activated the redundancy manager.
Note: Settings in the “Ring Recovery” frame are ineffective for devices
that are not the redundancy manager.
Note: If selecting the smaller value for the ring recovery does provide
the ring stability neccesary to meet the requirements of your network,
you select 500 ms.
Activate the function in the “Operation” frame.
Now you connect the line to the ring. To do this, you connect the two
devices to the ends of the line using their ring ports.
The displays in the “Information” frame mean:
– „“Redundancy guaranteed”: One of the lines affected by the function
can fail, whereby the redundant line will then take over the function
of the failed line.
– „“Configuration failure”: The function is incorrectly configured or
there is an error on ringport link.

HIPER-Ring
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2.2 Configuring HIPER-Ring Version 2 (MRP
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Figure 5: Configuring the Redundancy Manager, selecting operation, select-
ing ring recovery and entering VLAN ID. Display: Information.