Configuring E1 IQ and IQE Interfaces

To configure an E1 interface on a Channelized STM1 IQ or IQE PIC, you must perform the following tasks:

1. Include the no-partition and interface-type statements at the [edit interfaces cstm1-fpc/pic/port] hierarchy level, specifying the cau4 interface type. This converts the channelized STM1 interface into a channelized Administrative Unit 4 (AU-4) interface. The resulting interface name is cau4-fpc/pic/port:

   [edit interfaces cstm1-fpc/pic/port]

   no-partition interface-type cau4;

2. Partition the channelized AU-4 interface into E1 interfaces by including the partition and interface-type statements at the [edit interfaces cau4-fpc/pic/port] hierarchy level, specifying the e1 interface type. This configuration creates interface e1-fpc/pic/port:channel. The partition number is the sublevel interface partition index and is correlated with the channel number. For channelized E1 interfaces, the partition number can be from 1 through 63. The interface type is the channelized interface type or clear channel you are creating. For channelized AU-4 interfaces, type can be ce1 or e1.

   [edit interfaces cau4-fpc/pic/port]

   partition partition-number interface-type e1;

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

Note: For channelized STM1 interfaces, channel numbering begins with 0 (:0). For channelized STM1 IQ and IQE interfaces, channel numbering begins with 1 (:1).

Example: Configuring E1 IQ and IQE Interfaces

Configure the following five E1 interfaces:

• e1-0/0/0:1
• e1-0/0/0:2
• e1-0/0/0:3
• e1-0/0/0:4
• e1-0/0/0:5

  [edit interfaces cstm1-0/0/0]

  no-partition interface-type cau4;

  [edit interfaces cau4-0/0/0]

  partition 1-5 interface-type e1;

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

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