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Configuring CESoPSN on Channelized E1/T1 Circuit Emulation MIC

 

To configure Circuit Emulation Service over Packet-Switched Network (CESoPSN) protocol on a 16-port Channelized E1/T1 Circuit Emulation MIC (MIC-3D-16CHE1-T1-CE), you must configure the framing mode, configure CT1 interface down to DS channels, and configure the CESoPSN encapsulation on DS interfaces.

Configuring T1/E1 Framing Mode at the MIC Level

To set the framing mode at the MIC (MIC-3D-16CHE1-T1-CE) level, for all four ports on the MIC, include the framing statement at the [edit chassis fpc slot pic slot] hierarchy level.

After a MIC is brought online, interfaces are created for the MIC’s available ports on the basis of the MIC type and the framing option used.

  • If you include the framing t1 statement, 16 CT1 interfaces are created.

  • If you include the framing e1 statement, 16 CE1 interfaces are created.

Note

If you set the framing option incorrectly for the MIC type, the commit operation fails.

Bit error rate test (BERT) patterns with all binary 1s (ones) received by CT1/CE1 interfaces on Circuit Emulation MICs configured for CESoPSN do not result in an alarm indication signal (AIS) defect. As a result, the CT1/CE1 interfaces remain up.

Configuring CT1 Interface Down to DS Channels

To configure a channelized T1 (CT1) interface down to DS channels, include the partition statement at the [edit interfaces ct1-mpc-slot/mic-slot/port-number] hierarchy level:

Note

To configure a CE1 interface down to DS channels, replace ct1 with ce1 in the following procedure.

  1. In configuration mode, go to the [edit interfaces ct1-mpc-slot/mic-slot/port-number] hierarchy level.

    For example:

  2. Configure the sublevel interface partition index and the time slots, and set the interface type as ds.

    For example:

    Note

    You can assign multiple time slots on a CT1 interface. In the set command, separate the time slots by commas and do not include spaces between them. For example:

To verify this configuration, use the show command at the [edit interfaces ct1-1/0/0] hierarchy level.

An NxDS0 interface can be configured from a CT1 interface. Here N represents the number of time slots on the CT1 interface. The value of N is:

  • 1 through 24 when a DS0 interface is configured from a CT1 interface.

  • 1 through 31 when a DS0 interface is configured from a CE1 interface.

After you partition the DS interface, configure CESoPSN options on it.

Setting the CESoPSN Options

To configure CESoPSN options:

  1. In configuration mode, go to the [edit interfaces ds-fpc-slot/pic-slot/port:channel] hierarchy level.

    For example:

  2. Use the edit command to go to the [edit cesopsn-options] hierarchy level.
  3. Configure the following CESoPSN options:Note

    When you stitch pseudowires by using interworking (iw) interfaces, the device stitching the pseudowire cannot interpret the characteristics of the circuit because the circuits originate and terminate in other nodes. To negotiate between the stitching point and circuit endpoints, you need to configure the following options.

    • excessive-packet-loss-rate—Set packet loss options. The options are sample-period and threshold.

    • idle-pattern—An 8-bit hexadecimal pattern to replace TDM data in a lost packet (from 0 through 255).

    • jitter-buffer-latency—Time delay in the jitter buffer (from 1 through 1000 milliseconds).

    • jitter-buffer-packets—Number of packets in the jitter buffer (from 1 through 64 packets).

    • packetization-latency—Time required to create packets (from 1000 through 8000 microseconds).

    • payload-size—Payload size for virtual circuits that terminate on Layer 2 interworking (iw) logical interfaces (from 32 through 1024 bytes).

To verify the configuration using the values shown in the examples, use the show command at the [edit interfaces ds-1/0/0:1:1:1] hierarchy level:

See also

Configuring CESoPSN on DS Interfaces

To configure CESoPSN encapsulation on a DS interface, include the encapsulation statement at the [edit interfaces ds-mpc-slot/mic-slot/port-number:channel] hierarchy level.

  1. In configuration mode, go to the [edit interfaces ds-mpc-slot/mic-slot/port-number:channel] hierarchy level.

    For example:

  2. Configure CESoPSN as the encapsulation type.

    For example:

  3. Configure the logical interface for the DS interface.

    For example:

To verify this configuration, use the show command at the [edit interfaces ds-1/0/0:1] hierarchy level.

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