MLP Parameters

You can access the MLP Parameters window from the Link Editor. The MLP Parameters window is divided into two sections. The first section contains parameters that apply to the multiple link in general. The second section contains a list of the physical ports that are associated with each link.

You can access the MLP Parameters window only when the Link Type is set to MLP in the Link Editor window.

The parameter values are stored in the link configuration files /etc/opt/SUNWconn/x25/config/link_config_nnnn.cfg, where nnnn is the four-digit number that indicates the link number (for example, the file link_config_0004.cfg contains the parameters for link number 4).

The parameters described in this section configure the additional datalink parameters for an MLP link.

MLP Window (mlp_window)

The maximum number of outstanding unacknowledged frames allowable. This should be larger than the total of the MLP Priority values. The valid range for this parameter is 0 to 4095.

All of the machines connected to the same network must use the same MLP Window size. If you are connecting to a PSDN, check with your service provider to find out the appropriate MLP Window size to use. This may restrict the MLP Priority values that you can set, as the total of the MLP Priority values must not be greater than the MLP Window size.

N1 Count (mn1_val)

The maximum number of times that MLP attempts to send a frame to an SLP without receiving an acknowledgment. The valid range for this parameter is 1 to 255.

Lost Frame Timer [MT1] (mt1_val)

The time, in tenths of a second, during which MLP expects to receive an acknowledgment to an outstanding frame. The valid range for this parameter is 1 to 3000.

Group Busy Timer [MT2] (mt2_val)

The time, in tenths of a second, during which MLP waits for system resources, for example buffer space, to become available before declaring a frame as blocked and dropping it. The valid range for this parameter is 1 to 3000.

Reset Confirm Timer [MT3] (mt3_val)

The length of the timer, in tenths of a second, that determines how long the DTE waits for confirmation from the DCE that it has reset. The valid range for this parameter is 1 to 3000.

Physical Ports Associated with this Link

In x25tool, the physical ports associated with the link are displayed in the bottom half of the MLP Parameters window. Double clicking on a port here brings up the LAPB and WAN Parameters window described in "LAPB and WAN Parameters". You need to configure the parameters for each SLP that is associated with the link.