[Contents] [Prev] [Next] [Index] [Report an Error]

Example: Channelized OC3 IQ Interface Configuration

Figure 5: Channelized OC3 IQ Interface Example

Image g015506.gif

Figure 5 shows a sample channelization structure for a channelized OC3 IQ interface. Top-level partitions 1, 2, and 3 create channelized OC1 interfaces. The first channelized OC1 interface, coc1-0/0/0:1, is converted directly into the T3 interface t3-0/0/0:1. The second channelized OC1 interface, coc1-0/0/0:2, is partitioned into a T1 interface and a channelized T1 interface. The channelized T1 interface, t1-0/0/0:2:2, is then further subdivided into two NxDS0 channel groups: ds-0/0/0:2:2:1 and ds-0/0/0:2:2:2.

The remaining channelized OC1 interface, coc1-0/0/0:3, is converted to a channelized T3 interface, then to a channelized T1 interface, and ultimately to 14 individual NxDS0 channels and a channel group containing 10 NxDS0 channels. Additionally, channelized OC3 IQ interface coc3-0/1/0 uses the no-partition statement at the [edit interface interface-name] hierarchy level to create a clear channel SONET OC3 interface so-0/1/0. This example shows two NxDS0 mapping methods. Partition 2:x:x uses VT mapping for SONET/SDH equipment, while partition 3:x:x uses M13 mapping for North American T-carrier equipment.

This example also assumes corresponding interfaces. For example, for every sublevel T1 interface you configure on Router A, assume you have configured a matching sublevel or physical T1 interface on a neighboring router.

Router A



[edit]
interfaces {


coc3-0/0/0 {

partition 1 oc-slice 1 interface-type coc1; # Creates three channelized OC1

partition 2 oc-slice 2 interface-type coc1; # interfaces: coc1-0/0/0:1 through

partition 3 oc-slice 3 interface-type coc1; # coc1-0/0/0:3.
}




coc1-0/0/0:1 {

no-partition interface-type t3; # This converts the COC1 interface into
}                    #
T3 interface t3-0/0/0:1.




t3-0/0/0:1 {
no-keepalives;
encapsulation cisco-hdlc;


t3-options {
fcs 32;
feac-loop-respond;
}




unit 0 {


family inet {
address 10.21.21.2/30;
}


}


}




coc1-0/0/0:2 {

partition 1 interface-type t1; # Creates the T1 interface t1-0/0/0:2:1.

partition 2 interface-type ct1; # Creates the channelized T1 interface
}                              #
ct1-0/0/0:2:2.




t1-0/0/0:2:1 {
no-keepalives;
encapsulation cisco-hdlc;


t1-options {
fcs 32;
}




unit 0 {


family inet {
address 10.12.12.2/30;
}


}


}




ct1-0/0/0:2:2 {

partition 1 timeslots 1-10 interface-type
ds; # This converts the channelized T1 

partition 2 timeslots 11-24 interface-type
ds; # interface into two channel
}                           #
groups: ds-0/0/0:2:2:1 and ds-0/0/0:2:2:2.




                 
ds-0/0/0:2:2:1 {  # This is a channel group with 10 NxDS0s bundled as one.
no-keepalives;
encapsulation cisco-hdlc;


unit 0 {


family inet {
address 10.13.13.2/30;
}


}


}





ds-0/0/0:2:2:2 { # This is a
channel group with 14 NxDS0s bundled as one.
encapsulation frame-relay;


unit 0 {
dlci 10;


family inet {
address 10.14.14.2/30;
}


}


}




coc1-0/0/0:3 {

partition 1 interface-type ct3; # Creates the channelized T3 interface
}                            #
ct3-0/0/0:3.




ct1-0/0/0:3:1 {

partition 1 timeslots 1-10 interface-type
ds; # Creates a channel group. 
                 
partition 2 timeslots 11
interface-type ds; # Creates single NxDS0 channels.
partition 3 timeslots 12 interface-type ds;
partition 4 timeslots 13 interface-type ds;
partition 5 timeslots 14 interface-type ds;
partition 6 timeslots 15 interface-type ds;
partition 7 timeslots 16 interface-type ds;
partition 8 timeslots 17 interface-type ds;
partition 9 timeslots 18 interface-type ds;
partition 10 timeslots 19 interface-type ds;
partition 11 timeslots 20 interface-type ds;
partition 12 timeslots 21 interface-type ds;
partition 13 timeslots 22 interface-type ds;
partition 14 timeslots 23 interface-type ds;
partition 15 timeslots 24 interface-type ds;
}





ds-0/0/0:3:1:1 { # This is a
channel group with 10 NxDS0s bundled as one.
no-keepalives;
encapsulation cisco-hdlc;


unit 0 {


family inet {
address 10.31.31.2/30;
}


}


}




                 
ds-0/0/0:3:1:2 { # ds-0/0/0:3:1:2 through :15 are single NxDS0s channels.
encapsulation frame-relay;


unit 0 {
dlci 10;


family inet {
address 10.32.32.2/30;
}


}


}


# Assume ds-0/0/0:3:1:3 through :14 are configured here. 


ds-0/0/0:3:1:15 { # ds-0/0/0:3:1:2 through :15 are single
NxDS0s channels.
encapsulation frame-relay;


unit 0 {
dlci 10;


family inet {
address 10.45.45.2/30;
}


}


}




coc3-0/1/0 {

no-partition interface-type so; # Creates a clear channel SONET OC3 interface.
}





so-0/1/0 { # This is the clear
channel SONET OC3 interface so-0/1/0.
dce;
encapsulation frame-relay;


unit 1 {
dlci 11;


family inet {
address 10.22.22.1/30;
}


}


}


}

[Contents] [Prev] [Next] [Index] [Report an Error]