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Configuring T1 IQ Interfaces

To configure T1 interfaces on a Channelized OC12 IQ or IQE PIC, you perform the following tasks:

Partition the channelized OC12 interface into channelized OC1 interfaces by including the partition, oc-slice, and interface-type statements at the [edit interfaces coc12-fpc/pic/port] hierarchy level, specifying the coc1 interface type:[edit interfaces coc12-fpc/pic/port] partition partition-number oc-slice oc-slice-range interface-type coc1;
If your network equipment uses VT mapping, partition the channelized OC1 interface into T1 interfaces by including the partition and interface-type statements at the [edit interfaces coc1-fpc/pic/port] hierarchy level, specifying the t1 interface type:[edit interfaces coc1-fpc/pic/port] partition partition-number interface-type t1;
If your network equipment uses M13 or C-bit parity, convert the channelized OC1 interface into a channelized T3 interface by including the no-partition and interface-type statements at the [edit interfaces coc1- fpc/pic/port:channel] hierarchy level, specifying the ct3 interface type. Note that because the no-partition statement is included, this configuration does not create another level of channelization, as denoted by the number of colons in the resulting interface.[edit interfaces coc1-fpc/pic/port] no-partition partition-number interface-type ct3;
You then partition the channelized T3 interface into T1 interfaces by including the partition and interface-type statements at the [edit interfaces ct3-fpc/pic/port] hierarchy level, specifying the t1 interface type:[edit interfaces ct3-fpc/pic/port] partition partition-number interface-type t1;

Note: Class-of-service (CoS) rules cannot be applied to an individual channel configured on channelized IQ interfaces. You can only apply CoS rules to the aggregate bit streams.

Figure 37 shows VT-mapped and M13 or C-bit parity-mapped configurations of T1 IQ interfaces.

Figure 37: T1 Interfaces on a Channelized OC12 PIC

Image g003013.gif

Example: Configuring T1 IQ Interfaces

Configure the following T1 interfaces:



t1-0/0/0:1:1
t1-0/0/0:1:2
t1-0/0/0:1:3
t1-0/0/0:1:4
t1-0/0/0:1:5

VT-Mapped Configuration



[edit interfaces coc12-0/0/0]
partition 1 oc-slice 1 interface-type coc1;

[edit interfaces coc1-0/0/0:1]
partition 1-5 interface-type t1;

M13 or C-bit Parity-Mapped Configuration



[edit interfaces coc12-0/0/0]
partition 1 oc-slice 1 interface-type coc1;

[edit interfaces coc1-0/0/0:1]
no-partition interface-type ct3;

[edit interfaces ct3-0/0/0:1]
partition 1-5 interface-type t1;

For a full configuration example, see the JUNOS Feature Guide.

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