Example: Channelized E1 QPP Interface Configuration
The next example shows two ways to configure a channelized E1 QPP interface. Figure 3 shows a fractional E1 method and the NxDS-0 method seen previously in the complex OC-12 configuration example (see Example: Complex Configuration for a Channelized OC-12 QPP Interface). The NxDS-0 method breaks the channelized E1 QPP interface into discrete DS-0 blocks, while the fractional method creates a clear channel E1 that is segmented by timeslots.
To configure the NxDS-0 method, include the partition statement at the [edit interfaces ce1-fpc/pic/port] hierarchy level. Include the timeslots and interface-type options to create the desired number of NxDS-0 interfaces.
To configure a fractional E1 on a channelized E1 QPP interface, include the no-partition statement at the [edit interfaces ce1-fpc/pic/port] hierarchy level. After you commit this part of the configuration, a clear channel E1 interface is established. You can configure standard E1 options on this interface. Also, include the timeslots statement at the [edit interfaces e1-fpc/pic/port e1-options] hierarchy level.
Router A - NxDS-0 method
[edit]
interfaces {
ce1-1/2/3 {
partition 1 timeslots 10 interface-type ds; #This creates a single NxDS-0 channel: ds-1/2/3:1.
partition 2 timeslots 1-9 interface-type ds; #This creates a channel group with 9 NxDS-0s:
} # 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 { # This statement enables only 2 of the 31 NxDS-0 timeslots for use on e1-1/2/6.
timeslots 1-2;
}
unit 0 {
family inet {
address 10.255.126.2/24;
}
}
}
}