Radwin Ltd. 5XACMD3CN Manual De Usuario
FinM Deployment Guide
Release 4.2.46
2‐9
Inter Base Handover (IBHO) Update Message
Network Guidelines
2.9 Inter Base Handover (IBHO) Update
Message
Message
As mentioned, Fiber in Motion provides L2 connectivity, so all L3 features (routing etc.) are
handled directly between the on‐board router and the track side core router. The advantage
of this mode of operation is that no routing updates are needed during handovers, facilitating
the continuous fast handovers needed as the train moves along the track.
handled directly between the on‐board router and the track side core router. The advantage
of this mode of operation is that no routing updates are needed during handovers, facilitating
the continuous fast handovers needed as the train moves along the track.
However, there will be other L2 devices (switches) along the track side network that must be
updated.
updated.
When a TMU moves from one TBS to the next, there must be an update of the track side
network so the switches know the new data path. This update is made by sending an update
message to the track side core router. However, we do not wish to send an update message
for each on‐board device. This will overload the system. For this reason, the update is sent
regarding only 1 device ‐ the MAC address of the on‐board router (since all the on‐board
devices are behind it, they do not need to have individual update messages sent).
network so the switches know the new data path. This update is made by sending an update
message to the track side core router. However, we do not wish to send an update message
for each on‐board device. This will overload the system. For this reason, the update is sent
regarding only 1 device ‐ the MAC address of the on‐board router (since all the on‐board
devices are behind it, they do not need to have individual update messages sent).
For Regualtor Approval Only