Motorola ATCA-717 - Manual (Page 129)

Switching Unit Devices’ Features and Data Paths
PENT/ATCA−717 129
At blade start−up the Ethernet switch reads a serial PROM which contains switch
configuration information such as predefined Virtual Local Area Networks (VLANs).
a
The following table shows how the Ethernet interfaces are distributed across the 16
Ethernet switch ports.
a
Table 12: Ethernet Switching Unit −Ethernet Port Distribution
Interfaces Number of Ethernet Ports
PMC sites 2 x 1 and 2 x 2
Host Ethernet 2 x 1
Base interface 2 x 1
Fabric interface 2 x 1 and 2 x 2
Update channel interface −
Total 16
Four VLANs are predefined. Each backplane Ethernet interface is assigned to one
separate VLAN. On−board Ethernet interfaces, however, belong to more than one
VLAN.
a
The fabric interfaces are attached to tagged VLANs, and the base interfaces to untagged
VLANs.
a
The following figure illustrates the VLAN configuration. a