Examples: Interface Names

This section provides examples of naming interfaces. See Figure 1 for an example of where the slots, PICs, and ports are located on the M40 router. Examine your PIC to determine the port numbers; all port numbers are marked on the PIC.

Figure 1: Interface Slot, PIC, and Port Locations

For an FPC in slot 1 with two OC-3 SONET PICs in PIC positions 0 and 1, each PIC with two ports uses the following names:

so-1/0/0.0

so-1/0/1.0

so-1/1/0.0

so-1/1/1.0

An OC-48 SONET FPC in slot 1 and in concatenated mode appears as a single FPC with a single PIC, which has a single port. If this interface has a single logical unit, the name is as follows:

so-1/0/0.0

An OC-48 SONET FPC in slot 1 and in channelized mode has a number for each channel. For example:

so-1/0/0:0

so-1/0/0:1

For an FPC in slot 1 with a Channelized OC-12 PIC in PIC position 2, the DS-3 channels have the following names:

t3-1/2/0:0

t3-1/2/0:1

t3-1/2/0:2

...

t3-1/2/0:11

For an FPC in slot 1 with four OC-12 ATM PICs (the FPC is fully populated), the four PICs, each with a single port and a single logical unit, have the following names:

at-1/0/0.0

at-1/1/0.0

at-1/2/0.0

at-1/3/0.0