Nortel Networks 100 manual Nortel Networks Online Documentation

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Release Notes for the BayStack 450 10/100/1000 Series Switch

The switch cannot be upgraded to software version V4.0.0 through a port that is configured for tagged traffic unless your switches are currently running software version V2.0 or later.

If your switches are currently running software versions earlier than software version V2.0, you must upgrade your switch to software version V4.0.0 through a port that is configured as an untagged member of VLAN 1. (Software versions V2.0 and later, now support upgrades to future versions over VLANs other than VLAN 1, with tagged or untagged ports.)

When the BayStack 450 switch is upgraded with the new boot code image, all existing entries in the Event Log are erased. This corrects a potential problem with an earlier software version. A new entry is written to the Event Log confirming the upgrade of the boot code image.

When you upgrade a mixed stack to software version V4.0.0, you must first upgrade the agent code, before you upgrade the boot block. Although this is the inverse of the normal upgrade procedure, it is necessary to ensure a successful software upgrade.

For more information about mixed stack upgrades, see the Business Policy Switch 2000 User’s Guide .

During the load process, the ports are configured as follows:

--Twisted-pair ports: autonegotiation enabled

--Fiber optic ports: 100 Mb/s, half-duplex

--Gigabit MDA ports: autonegotiation disabled, Preferred Phy set to Right

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Contents Release Notes for the BayStack 450 10/100/1000 Series Switch Copyright 2001 Nortel Networks TrademarksIii Rev Introduction Upgrading the BayStack 450 FirmwareUpgrade Process Upgrading to Software Version V4.0.0 in a Mixed StackRecovering from a Failed Upgrade Important ConsiderationsCreating a Mixed Stack Accessing the Software Images Upgrade RestrictionsNortel Networks Online Documentation New Features Bug FixesKnown Restrictions Known Restrictions Release Notes for the BayStack 450 10/100/1000 Series Switch Known Restrictions Release Notes for the BayStack 450 10/100/1000 Series Switch Known Problems Connecting to Accelar Gigabit Ports 1000BASE-LX Connectors Network Management Supported Network Management ApplicationsOIT Support for Multiple Software Versions
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