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Release Notes for the BayStack 450 10/100/1000 Series Switch
6
311523-C Rev 00
• 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
Nortel Networks Online Documentation
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*
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