GE Mark VIe System Manual page 83

3.2.3 IONet Switch Guidelines
IONet is presently recommended to pass through a maximum of five switches in series when traveling from an I/O pack to a
main controller for the following reasons:
• IONet switches are not managed switches.
• Every Ethernet switch introduces latency into the transmission of Ethernet packets.
• Each controller frame allocates a period of time to service I/O data.
Mark VIe Controller
A
IONet Switch
Five Maximum IONet Switches in Series Between Controller and I/O Pack
Ethernet Networks
B
Communication path
between I /O packs
and controller, IONet
switches A-B
Communication path
between I /O packs
and controller, IONet
switches A-B-C-D-E
Public Information
C
Communication path
between I /O packs
and controller, IONet
switches A-B-C
E
Note: Maximum of 5 IONet
switches that Ethernet packets
pass through between I/O pack and
controller
GEH-6721_Vol_I_BP System Guide 83
D
Communication path
between I /O packs
and controller, IONet
switches A-B-C-D