Siemens SCALANCE X308-2 User Manual

Technical specifications
8.6 XR-300M EEC technical specifications
SCALANCE X-300
190 Operating Instructions, 05/2016, A5E01113043-20
8.6.5
Other properties
Table 8- 80 Switching properties
Max. number of learnable addresses
8000
Aging time
30 sec
Switching technique
Store and forward
Latency
5 μs
Table 8- 81 Reconfiguration times for redundancy mechanisms
Redundancy mechanism
Reconfiguration times
HRP
300 ms
Standby link
300 ms
MRP
200 ms
Mean time between failure (MTBF)
The values in the following table apply to the basic device without media modules.
Device version (power supply)
MTBF
1)
1 x 24 to 48 VDC
or
1 x 100 to 240 VAC / 60 to 250 VDC
> 15 years
2 x 24 to 48 VDC
or
2 x 100 to 240 VAC / 60 to 250 VDC
> 15 years
2)
1)
These values apply at 40 °C.
2)
The redundant power supply unit increases the reliability of the system. The MTBF value of the
power supply unit is > 20 years.
In the calculation of the MTBF of a modular switch, the standard parts count applies; in other
words, the reciprocals of all component failure rates are added.
The reciprocal of this total id the MTBF of the entire assembly.
Table 8- 82 Full wire speed switching
Number of frames per second
At a frame length of
At 100 Mbps
At 1000 Mbps
148810
1488095
64 bytes
84459
844595
128 bytes
45290
452899
256 bytes

Siemens SCALANCE X308-2 Specifications

General

Brand	Siemens
Model	SCALANCE X308-2
Category	Switch
Language	English