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Configuring CESoPSN Encapsulation on DS Interfaces on Channelized OC3/STM1 (Multi-Rate) Circuit Emulation MIC with SFP

This topic includes the following tasks:

1. Setting the Encapsulation Mode
2. Setting the CESoPSN Options
3. Configuring the Pseudowire Interface

Setting the Encapsulation Mode

1. In configuration mode, go to the [edit interfaces ds-mpc-slot/mic-slot/port<:channel>] hierarchy level.
   [edit]user@host# edit interfaces ds-mpc-slot/mic-slot/port<:channel>

   For example:

   [edit]user@host# edit interfaces ds-1/0/0:1:1:1
2. Configure CESoPSN as the encapsulation type and set the logical interface for the DS interface.
   [edit interfaces ds-mpc-slot/mic-slot/port<:channel>]user@host# set encapsulation cesopsn unit logical-unit-number

   For example:

   [edit interfaces ds-1/0/0:1:1:1]user@host# set encapsulation cesopsn unit 0

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

You do not need to configure any circuit cross-connect family because it is automatically created for the CESoPSN encapsulation.

Setting the CESoPSN Options

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

   For example:

   [edit]user@host# edit interfaces ds-1/0/0:1:1:1
2. Use the edit command to go to the [edit cesopsn-options] hierarchy level.
   [edit]user@host# edit cesopsn-options
3. In this hierarchy level, using the set command you can configure the following CESoPSN options:
   • excessive-packet-loss-rate—Set packet loss options. The options are sample-period and threshold.
     • sample-period—Time required to calculate excessive packet loss rate (from 1000 through 65,535 milliseconds).
     • threshold—Percentile designating the threshold of excessive packet loss rate (1–100 percent).
   • 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).

   Note: In this section, we are configuring only one CESoPSN option. You can follow the same method to configure all the other CESoPSN options.

   [edit interfaces ds-1/0/0:1:1:1 cesopsn-options]user@host# set excessive-packet-loss-rate sample-period sample-period

   For example:

   [edit interfaces ds-1/0/0:1:1:1 cesopsn-options]user@host# set excessive-packet-loss-rate sample-period 4000

Configuring the Pseudowire Interface

1. In configuration mode, go to the [edit protocols l2circuit] hierarchy level.
   [edit]user@host# edit protocol l2circuit
2. Configure the IP address of the neighboring router or switch, the interface forming the Layer 2 circuit, and the identifier for the Layer 2 circuit.
   [edit protocol l2circuit]user@host# set neighbor ip-address interface interface-name-fpc-slot/pic-slot/port.interface-unit-number virtual-circuit-id virtual-circuit-id

   For example:

   [edit protocol l2circuit]user@host# set neighbor 10.255.0.6 interface ds-1/0/0:1:1:1 virtual-circuit-id 1

After the customer edge (CE)-bound interfaces (for both PE routers) are configured with proper encapsulation, packetization latency, and other parameters, the two PE routers try to establish a pseudowire with Pseudowire Emulation Edge-to-Edge (PWE3) signaling extensions. The following pseudowire interface configurations are disabled or ignored for TDM pseudowires:

• ignore-encapsulation
• mtu

When the local interface parameters match the received parameters, and the pseudowire type and control word bit are equal, the pseudowire is established.

For detailed information about configuring TDM pseudowire, see the Junos OS VPNs Library for Routing Devices.

For detailed information about PICs, see the PIC Guide for your router.