Mean time between failure (MTBF)
The value in the following table applies to the basic device without media modules.
MTBF
> 15 years
1)
1)
This value applies at 40 °C.
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.
07%)
WRWDO
07%)
EDVLFGHYLFH
07%)
PRGXOHQ
07%)
PRGXOH
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
23496
234962
512 bytes
11973
119732
1024 bytes
9615
96154
1280 bytes
8127
81274
1518 bytes
Note
The following applies to IE Switches X-300:
The number of IE Switches X-300 connected in a line influences the frame delay time. When a
frame passes through the switch, this is delayed by the Store&Forward function of the
IE Switch X-300 by the following values:
• at 64 bytes frame length: Delay of approx. 10 microseconds (at 100 Mbps)
• at 1500 bytes frame length: Delay of approx. 130 microseconds (at 100 Mbps)
This means, the more IE Switches X-300 a frame runs through, the higher the frame delay.
PRP compatibility
Device variant
As of version *
XR324-4M PoE
V3.7.0
XR324-4M PoE TS
V3.7.x
* Information about the firmware version (V) as of which PRP is supported.
Technical specifications
8.4 Other properties
SCALANCE XR-300M PoE
Compact Operating Instructions, 03/2022, A5E02661178-15
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