Switching Properties - Siemens SCALANCE XR-500 Operating Instructions Manual

Technical specifications
9.6 Switching properties
9.6

Switching properties

The switching characteristics listed below apply to the devices named in the scope of validity.
Switching properties
Aging time
Maximum frame size
Max. number of learnable address‐
es
Response to LLDP frames
Response to spanning tree BPDU
frames
CoS acc. to IEEE 802.1Q
QoS priority queues
Switching technique
Latency
Full wire speed switching
Note
The number of devices connected in a line, which are named in the scope of validity, influences
the frame delay. When a frame passes through an IE switch, it is delayed by the store-and-
forward function of the device:
• With a 64-byte frame length by about 10 microseconds (at 100 Mbps)
• With a 1500-byte frame length by about 130 microseconds (at 100 Mbps)
This means that the more devices the frame passes through, the higher the frame run time.
116
Can be configured (default value: 300 seconds)
2048
16382
Blocking
Forwarding
Yes
8
Store and forward
10 microseconds
Frame length (bytes)
64
128
256
512
1024
1280
1518
Number of frames per second
At 100 Mbps At 1000 Mbps
148810 1488095
84459 844595
45290 452899
23496 234962
11973 119732
9615 96154
8127 81274
Operating Instructions, 07/2023, C79000-G8976-C692-01
With 10 Gbps
14880952
8445946
4528986
2349664
1197318
961538
812744
SCALANCE XR-500