Browse Prior Art Database

Enhanced Download of IBM 8230s with Minimum Disruption to the Users

IP.com Disclosure Number: IPCOM000116065D
Original Publication Date: 1995-Jul-01
Included in the Prior Art Database: 2005-Mar-30
Document File: 4 page(s) / 99K

Publishing Venue

IBM

Related People

Norris, RW: AUTHOR [+2]

Abstract

Described are enhancements to the current Remote Program Update feature of the IBM* 8230. Described is a new method of performing the download of the 8230 microcode that allows devices attached to the 8230 being "downloaded" to remain active in the network while the 8230s microcode is being updated. The described enhancement will also allow multiple 8230s (more that the current maximum of two) to be updated concurrently. The enhanced method described in this disclosure does not apply when an 8230 is being updated because of the 8230 has detected an error with it microcode. Its purpose is to improve the updating of multiple 8230s with a new release of microcode. The new release may be a maintenance release or may be adding new function.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Enhanced Download of IBM 8230s with Minimum Disruption to the Users

      Described are enhancements to the current Remote Program Update
feature of the IBM* 8230.  Described is a new method of performing
the download of the 8230 microcode that allows devices attached to
the 8230 being "downloaded" to remain active in the network while the
8230s microcode is being updated.  The described enhancement will
also allow multiple 8230s (more that the current maximum of two) to
be updated concurrently.  The enhanced method described in this
disclosure does not apply when an 8230 is being updated because of
the 8230 has detected an error with it microcode.  Its purpose is to
improve the updating of multiple 8230s with a new release of
microcode.  The new release may be a maintenance release or may be
adding new function.

      The microcode that resides in the IBM 8230 Controlled Access
Unit is divided into three functional areas (Fig. 1).  First there is
the operational microcode that allows the IBM 8230 to perform its
normal functions as access unit including communications with a
management entity.  The operational microcode is stored in
electronically erasable reprogrammable memory.  It is the only
microcode
that may be updated by the Remote Program Update (RPU) process.

      Secondly, there is the RPU microcode.  The RPU microcode along
with a loader program residing in another device performs the update
function to allow the operational microcode to be updated when
necessary because of an error, for new maintenance releases or for a
new functional upgrade release.  The third type of microcode is the
token-ring adapter microcode that resides in the read only storage of
the three adapters of the IBM 8230.

      Described is a modification to the current RPU process.  The
modification affects only the operation of the RPU process when
maintenance or functional updates are performed.  The process for
downloading because of an error is not...