SIEMENS
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Siemens IK PI · 2015
PROFINET/Industrial Ethernet
Industrial Ethernet Layer 3 Switches / Routers
SCALANCE XM-400 managed
2
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Function
•
Fast redundancy in the ring;
A redundant network structure is created by inter-
connecting the ends of an optical line to form a ring.
The SCALANCE XM-400 switches have an integral redun-
dancy manager (RM) which monitors the function of the
network continuously. It recognizes the failure of a trans-
mission path or the failure of a SCALANCE XM-400 switch in
the ring and then activates the substitute path. In rings
with SCALANCE X-200 or OSM/ESM, it is possible to
integrate XM-400 switches at 100 Mbit/s. In rings with
SCALANCE X-300 and SCALANCE XR-500, it is possible to
integrate XM-400 switches with Gigabit.
•
Fast standby redundancy;
The integrated standby function permits a reliable intercon-
nection of several rings. Two transmission links are used to
connect two XM-400 switches of a ring to the other ring
•
Time synchronization;
diagnostic messages (log table entries, e-mails) are time-
stamped. The local time is standardized throughout the
network by means of time synchronization with a time server,
thereby simplifying the assignment of diagnostic messages of
several devices.
•
Load limiting when using multicast protocols
(e.g. Voice over IP, Video)
•
By learning the multicast receivers, XM-400 switches can also
filter multicast data traffic and thus limit the load in the network.
•
Redundant interfacing to company networks;
XM-400 switches support the standardized redundancy
procedures Spanning Tree Protocol (STP) and Rapid
Spanning Tree Protocol (RSTP). This enables a subnetwork to
be connected redundantly to a higher level corporate network
with reduced requirements for the reconfiguration time (in the
order of seconds).
•
Support for virtual networks (VLAN);
For structuring Industrial Ethernet networks with a fast growing
number of users, a physically existing network can be divided
into several virtual subnets, e.g. to divide the network into
logical areas. In this way, very large Ethernet networks can be
subdivided into smaller subnets with their own IP address
space.
•
Support for Quality of Service (QoS) through IP Type of Service
(ToS) and prioritizing according to 802.1Q
•
Link Aggregation (IEEE 802.3ad) for parallel use of ports to
increase the transmission rate and fail-safety.
•
Support for port prioritization
•
Support for bandwidth limiting (Broadcast Limiter, Multicast
Limiter, Unicast Limiter)
•
Flow control
•
Simple device replacement;
All settings are automatically backed up on the C-PLUG
plug-in swap medium (included in scope of delivery). If a
switch of the SCALANCE XM-400 series has to be replaced,
then these settings are simply transferred to the replacement
device by plugging in the C-PLUG.
Additional function through Layer 3 KEY PLUG
•
Layer 3 switching support
- Static routing
- Dynamic routing
- Router redundancy
The integrated dynamic routing protocols OSPF (Open
Shortest Path First) and RIPv2 (Routing Information Protocol)
govern the communication to other IP routers in the network.
•
Redundant Layer-3 switching (routing) is achieved with the
integrated VRRP function (Virtual Router Redundancy
Protocol).
•
IPv6 support (available soon), support of dual-stack routing
(IPv4 / IPv6)
Integrated security
•
Port security
•
Access Control to Agent
•
Authentication 802.1X
• SSH
• HTTPS
• SNMPv3
• RADIUS
Network topology and network configuration
The network topology can easily be adapted to the structure of
the plant with SCALANCE XM-400 Industrial Ethernet switches.
The following network structures and combinations of structures
can be implemented:
•
Gigabit and Fast Ethernet rings with fast media redundancy:
To protect against the failure of a transmission link or a switch,
up to 50 linearly cascaded switches can be interconnected
to form a ring. On the failure of a transmission link or of a
switch in the ring, the transmission path is reconfigured within
300 milliseconds.
•
Several rings can be redundantly linked through the standby
function.
•
In addition, SCALANCE XM-400 supports redundant
connection of the ring structure to the corporate network with
a rapid spanning tree.
•
Star topology with SCALANCE XM-400 switches:
The switch represents a neutral star point that can inter-
connect up to 24 nodes or subnets electrically or optically
When configuring the network, it is necessary to observe the
following boundary conditions:
•
Maximum line length between two modules for multi-mode
fiber-optic conductors:
- 5 000 m at 100 Mbit/s
- 750 m at 1 Gbit/s
•
Maximum line length between two modules for single-mode
fiber-optic conductors:
- 200 km at 100 Mbit/s
- 120 km at 1 Gbit/s
•
Maximum length of installation cable:
- 100 m at 100 Mbit/s with IE FC TP Cable 2 x 2 and
IE FC Plug 180
- Max. 90 m at 1 Gbit/s with IE FC TP cable 4 x 2,
IE FC RJ45 modular outlet and patch cable (10 m)
- 100 m at 1 000 Mbit/s with IE FC TP Cable 4 x 2 and
IE FC Plug 4 x 2
© Siemens AG 2014