Browse Prior Art Database

Link Activation Protocol

IP.com Disclosure Number: IPCOM000109699D
Original Publication Date: 1992-Sep-01
Included in the Prior Art Database: 2005-Mar-24
Document File: 2 page(s) / 76K

Publishing Venue

IBM

Related People

Drake, JE: AUTHOR [+2]

Abstract

The link activation protocol is used to activate a link between two adjacent nodes. This protocol * allows each node to identify itself, * establishes the characteristics of the link, * allows the exchange of node characteristics, and * allows the transition of the link from a state of "disabled", that does not permit user or network control traffic to traverse the link, to a link stated called "online" that does.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 62% of the total text.

Link Activation Protocol

       The link activation protocol is used to activate a link
between two adjacent nodes.  This protocol
      *    allows each node to identify itself,
      *    establishes the characteristics of the link,
      *    allows the exchange of node characteristics, and
      *    allows the transition of the link from a state of
"disabled", that does not permit user or network control traffic to
traverse the link, to a link stated called "online" that does.

      Link activation consists of a single message exchange (i.e., a
link activation request and a link activation response) on a
short-lived, reliable transport connection between the nodes
activating the link.  The use of a transport protocol allows the link
activation protocol to be completely independent of the DLC
associated with the link.

      When the two adjacent nodes establish physical connectivity,
the link is in "disabled" state.  One node sends a link activation
request, which includes fields describing, for example, whether the
node requires elements of procedure, the maximum packet size the node
can receive and transmit, and whether real-time traffic is supported.
The adjacent node sends a link activation response.

      Use of a transport protocol also allows a simple solution to
the situation of both nodes simultaneously sending link activation
requests.  When the node with the lower-valued node name receives a
link activat...