Configuring LLC2 Properties

For basic DLSw configuration, include the llc2 statement at the [edit interfaces interface-name unit logical-unit-number family] hierarchy level. All other LLC2 statements that follow are optional and should be used only if recommended by support or a services professional to solve specific problems or for specific network designs.

To configure logical link control properties, include the llc2 statement:

llc2 { 

    ack-delay-time time;

    ack-max count;

    idle-time time;

    local-window count;

    max-retry count;

    p-bit-timeout time;

    t1-time time;

    t2-time time;

    trej-time time;

    }

}

You can include this statement at the following hierarchy levels:

• [edit interfaces interface-name unit logical-unit-number family]
• [edit logical-routers logical-router-name interfaces interface-name unit logical-unit-number family]

You can configure the following LLC options:

• ack-delay-time—The maximum time allowed for incoming Information-frames (I-frames) to remain unacknowledged. Specify the number of milliseconds from 1 through 60000. The default value is 100 milliseconds.
• ack-max—The maximum number of I-frames received before acknowledgement is sent. Specify the number of I-frames from 1 through 127.The default value is 3 I-frames.
• idle-time—The number of seconds that a TCP connection between DLSw peers will stay up without any circuit using the connection. Specify the number of seconds from 1 through 60000. The default value is 10 seconds.
• local-window—The maximum number of I-frames to send before waiting for acknowledgement. Specify the number of I-frames from 1 through 127. The default value is 7 I-frames.
• max-retry—The number of retries the router should attempt when waiting for a response. Specify the number of I-frames from 1 through 127. The default value is 10 I-frames.
• p-bit-timeout—The length of time the router waits for response to a poll bit. Specify the number of milliseconds from 1 through 60000. The default value is 3000 milliseconds.
• t1-time—The length of tim VPN
• e the router waits for an acknowledgment of transmitted frames. Specify the number of milliseconds from 1 through 60000. The default value is 1000 milliseconds.
• t2-time—The length of time the router withholds the I-frame response. Specify the number of milliseconds from 1 through 60000. The default value is 100 milliseconds.
• trej-time—Q.391-specific timer for T310, in seconds. Specify the number of milliseconds from 1 through 60000. The default value is 3000 milliseconds.