Example: Channelized E1 IQ Interface Configuration

Figure 10: Channelized E1 IQ Interface Example

This example shows two ways to configure a channelized E1 IQ interface. Figure 10 shows a fractional E1 method and the NxDS0 method seen previously in the complex OC12 configuration example (see Example: Complex Configuration for a Channelized OC12 IQ Interface). The NxDS0 method breaks the channelized E1 IQ interface into discrete DS0 blocks, whereas the fractional method creates a clear channel E1 that is segmented by time slots.

To configure NxDS0 channels, include the partition statement at the [edit interfaces ce1-fpc/pic/port] hierarchy level. Include the timeslots and interface-type ds options to create the desired number of NxDS0 interfaces in time slots 2 through 32.

To configure a fractional E1 on a channelized E1 IQ interface, include the no-partition statement at the [edit interfaces ce1-fpc/pic/port] hierarchy level. After you commit this configuration, configure standard E1 options on the clear channel E1 interface. Include the timeslots statement at the [edit interfaces e1-fpc/pic/port e1-options] hierarchy level. Time slot 1 is reserved; use time slots 2 through 32.

Router A—NxDS0 Method

[edit]

interfaces {

    ce1-1/2/3 {

        partition 1 timeslots 11 interface-type ds;                                                                     # Creates NxDS0 channel ds-1/2/3:1

        partition 2 timeslots 2-10 interface-type ds;                                                                                 # Creates a channel group with

    }                                                                                    # 9 NxDS0s: ds-1/2/3:2.

    ds-1/2/3:1 {

        unit 0 {

            family inet {

                address 10.25.1.2/24;

            }

        }

    }

    ds-1/2/3:2 {

        unit 0 {

            family inet {

                address 10.25.2.2/24;

            }

        }

    }

}

Router A—Fractional E1 Method

[edit]

interfaces {

    ce1-1/2/6 {

        no-partition;                        # This creates a single E1 channel: e1-1/2/6.

    }

    e1-1/2/6 {

        e1-options {

            timeslots 2-3;                                # This statement enables only 2 of the 31 NxDS0 time slots

        }                                # available on e1-1/2/6. You can use time slots 2 through 32.

        unit 0 {

            family inet {

                address 10.255.126.2/24;

            }

        }

    }

}