========================================================================
Nortel Networks, Inc					Updated: 5/25/99
Model 28115, BayStack 28115/ADV, BayStack 28104/ADV                   			
Verion 2.1.1.6					
========================================================================


RELEASE SUMMARY:
===============
This is a REV release.  This release has incorporated bug fixes after
version 2.1.1.5


PLATFORMS SUPPORTED:
===================
28115, 28115/ADV, 28104/ADV


NOTES FOR UPGRADE:
=================

VERSION OF PREVIOUS RELEASES:
============================
Version 2.1	Date:	10/97  
Version 2.1.1	Date:	 3/98 
Version 2.1.1.1 Date: 	 4/98
Version 2.1.1.3 Date:	11/98
Version 2.1.1.4 Date:	1/99
Version 2.1.1.5 Date:	4/99

COMPATIBILITY:
=============


FEATURES IN THIS RELEASE:
========================

None

FEATURES ADDED IN PREVIOUS RELEASES:
===================================

Features added in 2.1.1.5 release:

This version fixed the IP unmanageable problem totally. The bug was
in switch driver directory. The code didn't do validity check in
time, so for certain traffic which produces wrong data, it will
corrupt the memory which unfortunately is the IEEERegTable.
 
Features added in 2.1.1.4 release:

The new feature added in this release is fast aging algorithm into 
spanning tree mode.This version implemented fast aging according to RFC 802.1d standard, 
so the converge time should less then 1.5 munites for both broken a
link or reconnect the link.

Testing Note:

In order to avoid multiple fast aging, this version uses a timer 
named fast_aging_on_timer: When fast_aging_on_timer is not set and
Topology Change flag is set in Configuration Messages, Bridges start
fast aging to age out dynamic entries. The fast_aging_on_timer will 
be set to false after 90 seconds. Within this time interval, switch
will not start another fast aging event. So when testing convergence 
time, wait 90 seconds to start another link state change (topology 
change) event to get the accurate result.

OLD FEATURES REMOVED IN THIS RELEASE:
====================================

None


PROBLEMS RESOLVED IN THIS RELEASE:
=================================

CR 103280:	28k v2.0.4.5 on 28104:  Lost connectivity.
		The 28104 is pingable but not switches beyond it.

CR 101842:	MIB2 query of ifOutOctets provides invalid information.

PROBLEMS RESOLVED IN PREVIOUS RELEASES:
======================================

Problems resolved in 2.1.1.5:

CR 56823:       Switch running code 2.0.3 becoming unmanageable.
                Version 2.0.4.3 has a patch solution for this problem.
                This version resolves the bug from the cause.

Problems resolved in 2.1.1.4:

CR 75355	5 Minutes to topologize with Spanning Tree. 	

Problems resolved in 2.1.1.3:

CR 57776	Intermittent connectivity loss with certain clients.
		
CR 57701	The 28K switch did not allow users to turn off the 
		pinging of the default router.

Problems resolved in 2.1.1.1:

CR 57681	During upgrade, switch resets to factory default.

Problems  resolved in 2.1.1:

CR 57110	Year 2000 Compliance fix.


KNOWN LIMITATIONS: 
=================

No additional known issues.  For latest release note information, please go to 
Bay Networks web page.	
  http://support.baynetworks.com/library 

 

DEFINITION OF RELEASES:
======================


(c) 1998 Bay Networks Incorporated.  All rights reserved.