HP UX Internet and Networking Software manual Implicit links to an End Node are uplinks

Administration Commands

define_sdlc_port

implicit_limited_resource

Specifies whether implicit link stations off this port are defined as limited resources. Possible values are:

NO

Implicit links are not limited resources and are not automatically deactivated.

NO_SESSIONS

Implicit links are limited resources and are automatically deactivated when no active sessions are using them.

INACTIVITY

Implicit links are limited resources and are automatically deactivated when no active sessions are using them or when no data has flowed for the time period specified by the implicit_deact_timer parameter.

•If no SSCP-PU session is active across the link, the node deactivates the link immediately.

•If an SSCP-PU session is active but no traffic has flowed for the specified time period, the node sends REQDISCONT(normal) to the host. The host is then responsible for deactivating all LUs and the PU, at which time the local node will deactivate the link. However, the host may not deactivate LUs with active PLU-SLU sessions; in this case, the link remains active until all these sessions are deactivated (for example by the user logging out). This behavior can be changed by using options in the ptf parameter of the start_node command.

implicit_hpr_support

Specifies whether High Performance Routing (HPR) is supported on implicit links. Possible values are:

YES

HPR is supported on implicit links.

NO

HPR is not supported on implicit links.

implicit_deact_timer

Implicit limited resource link deactivation timer, in seconds.

If implicit_hpr_support is set to YES and implicit_limited_resource is set to NO_SESSIONS, then the implicit link is automatically deactivated if no data flows on it for the time specified by this parameter and no sessions are using the link.

If implicit_limited_resource is set to INACTIVITY, an implicit link using this port is automatically deactivated if no data flows on it for the time specified by this parameter.

The minimum value is 5; values in the range 1–4will be interpreted as 5. The value 0 (zero) indicates no timeout (the link is not deactivated, as though implicit_limited_resource were set to NO). This parameter is reserved if implicit_limited_resource is set to NO.

implicit_uplink_to_en

This parameter applies only if the local node is a Branch Network Node; it is reserved if the local node is any other type.

If the adjacent node is an end node, this parameter specifies whether implicit link stations off this port are uplink or downlink. This parameter is ignored if there are existing links to the same adjacent node, because in this case the existing links are used to determine the link type. Possible values are:

YES

Implicit links to an End Node are uplinks.

NO

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