User guide

Canopy System User Guide Interpreting Data in the Bridging Table
(All)
pmp-0229 (Mar 2013)
509
List of Registration Failures (AP, BHM)
The SM Registration Failures tab identifies SMs that have recently attempted and failed to register
to this AP. With its time stamps, these instances may suggest that a new or transient source of
interference exists.
Figure 163: SM Registration Failures tab of the AP
Interpreting Data in the Bridging Table (All)
If NAT (network address translation) is not active on the SM, then the Bridging Table tab provides
the MAC address of all devices that are attached to registered SMs (identified by LUIDs). The
bridging table allows data to be sent to the correct module as follows:
• For the AP, the uplink is from RF to Ethernet. Thus, when a packet arrives in the RF interface
to the AP, the AP reads the MAC address from the inbound packet and creates a bridging
table entry of the source MAC address on the other end of the RF interface.
• For the SM, the uplink is from Ethernet to RF. Thus, when a packet arrives in the Ethernet
interface to one of these modules, the module reads the MAC address from the inbound
packet and creates a bridging table entry of the source MAC address on the other end of the
Ethernet interface.
Figure 164: Bridging Table tab of the AP