Network Management - Nortel BayStack 425-24T Specifications

Additionally, the Ethernet Switch 425
models allow you to make changes to
the configuration of the switch and if
those configuration changes are incor-
rect, the switch will re-boot after a user
pre-defined amount of time and restore
the original configuration using the new
reload command.
Banner and Control-Y
The Ethernet Switch 425 models enable
a customizable banner to be displayed
when users connect to the switch and
press Control-Y to enter the menu or
CLI interfaces. A customizable banner is
seen as part of good security practices.
The banner can also be disabled and
Control-Y skipped to enable direct
access to the CLI or menu if desired.
Autosave disable
The Ethernet Switch will by default save
any changes every 60 seconds. The switch
checks for configuration changes or if a
log message is present. If one of these
two events has occurred, the system
automatically saves its configuration and
the non-volatile log to the flash memory.
Also, the system automatically saves the
configuration file if a system reset
command is invoked.
The autosave disable feature prevents
saving the configuration changes to the
flash memory. When changing configu-
ration, runtime configuration changes
dynamically but is not saved to the flash
memory. Network administrators must
then explicitly save the configuration
using the CLI or menu.
Software updates
TFTP client support allows software
upgrades and SNMP agent updates over
the network. Additionally, after the
image has been downloaded onto the
switch, the network manager is allowed
to predictably reset the switch in order
for the new software to take effect,
providing control over the timing of the
upgrade.
IP-based switch management
BootP support provides centralized
switch IP address assignment and in the
event that a static IP address is not
assigned, the switch will automatically
look for a BootP server, simplifying
initial IP address assignment.
Port mirroring
The port mirroring feature (sometimes
referred to as 'conversation steering')
allows the network administrator to
designate a single switch port as a traffic
monitor. Port mirroring replicates data
from a designated switch port to the
mirrored port. The mirrored traffic can
then be used for in-depth analysis of
switched traffic patterns to troubleshoot
problems and optimize network config-
urations. The Ethernet Switch 425
family supports both ingress and egress
port mirroring.
Port naming
This feature provides the ability to name
each port on the switch with a dedicated
text string. It can enable the easy identifi-
cation of the connected devices and users.
LED indicators
The LED indicators on the front panel
make it easy to monitor the switch and
port status and help in isolating and
diagnosing switch problems.

Network Management

Enterprise Switch Manager
Enterprise Switch Manager (ESM) is a
Java-based, real-time configuration
management application for Nortel LAN
products including Ethernet Switch 425.
It enables network managers to discover,
view and configure more than 500
network devices and their physical links
on a topology map. Configuration is
stored in NVRAM (Non-Volatile
Random Access Memory).
Fault management
and resolution
With Enterprise Network Management
System (ENMS), the network manager
has quick access to the information
required to manage and isolate all network
events on Ethernet Switch 425 models.
Tools, such as Physical Topology View,
inform the network manager of how a
particular event is affecting the physical
connectivity within the network. The
'End Node Locate' tool provides the
ability to locate a failing end node and,
with one mouse click, provides access to
the RMON statistics for the failing
Ethernet port supporting that end node.
These solutions provide visual and statis-
tical tools necessary to quickly resolve
network events or to manage perform-
ance in real-time. The Ethernet Switch
425 supports "syslog" capability that helps
in troubleshooting network issues.
802.1ab auto-topology
Nortel's Ethernet Switch 425 family
supports the 802.1ab auto-topology
standard in addition to Nortel auto-
topology. 802.1ab provides a method
for the switch and other devices that
support 802.1ab within the LAN to
advertise their identification, configura-
tion and capabilities to neighboring
devices. Each 802.1ab-supporting device
saves the information they learn inter-
nally, which allows the network manage-
ment system to model the topology of
the network by interrogating each device.
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