3com S7906E Manuel De Montage

1-8

Figure 1-6

An EPON system

OLT port

Each PON port on an EPON card in an S7900E switch is an independent OLT device. For an S7900E
switch, a PON port is an OLT port. An OLT port number is in the format EPON card slot

number/sub-card slot number/OLT port number

, such as OLT 3/0/1, as shown in

Figure 1-6

ONU port

Each OLT port of an S7900E switch has 64 logical ONU ports. An ONU port becomes a physical port
only after an ONU device is bound with it. The configurations performed in ONU port view take effect on
the corresponding ONU device. An ONU port number is in the format EPON card slot number/sub-card

slot number/OLT port number: ONU port number

, such as ONU 3/0/1:1, as shown in

Figure 1-6

UNI Port

A UNI port is an ONU device port connected to a user. The UNI port number supported by an S7900E
switch is in the range 1 to 80. The actual numbers vary with ONU devices. For example, when the ONU
device corresponding to ONU 3/0/1:1 in an EPON system is S3100-16C-EPON-EI, the UNI port number
is in the range 1 to 16.

S7900E OLT Configuration Task List

Figure 1-6

shows an EPON system networking diagram, which assumes that only two ONUs are

attached to one OLT port and each ONU is connected to only one user.

Based on the three port types (OLT, ONU, and UNI) shown in

Figure 1-6

, this document details the

functions of an S7900E Ethernet switch working as an OLT device and the configurations for the
functions.

Complete the following tasks to configure OLT on an S7900E switch:

Task

Remarks

OLT Configuration