System Administration Guide: Resource Management and Network Services

Configuring Synchronous Devices on the Leased Line

The task in this section involves configuring equipment that is required by the leased-line topology that is introduced in Example—Configuration for a Leased-Line Link. The synchronous devices that are required to connect to the leased line include the interface and modem.

Prerequisites for Synchronous Devices Setup

Before you perform the next procedure, you must have the following items:

How to Configure Synchronous Devices

  1. Physically install the interface card into the local machine, if it is necessary.

    Follow the instructions in the manufacturer's documentation.

  2. Connect the cables from the CSU/DSU to the interface and, if it is necessary, from the CSU/DSU to the leased-line jack or similar connector.

  3. Configure the CSU/DSU, as instructed in the documentation from the manufacturer or network provider.

    Note –

    The provider from whom you rented the leased line might supply and configure the CSU/DSU for your link.

  4. Configure the interface card, if necessary, as instructed in the interface documentation.

    The configuration of the interface card involves the creation of a startup script for the interface. The router at LocalCorp in the leased-line configuration that is shown in Figure 30–2 uses an HSI/S interface card.

    The following script hsi-conf starts up the HSI/S interface:

    /opt/SUNWconn/bin/hsi_init hih1 speed=1536000 mode=fdx loopback=no \
    nrzi=no txc=txc rxc=rxc txd=txd rxd=rxd signal=no 2>&1 > /dev/null


    Indicates that HSI/S is the synchronous port used 


    Sets the speed of the CSU/DSU to 1536000 

Where to Go From Here


For Instructions 

Configure the local machine on the leased line 

How to Configure a Machine on a Leased Line