Dell PowerConnect 3248 User manual

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Dell™ PowerConnect™ 3248 and 5224 Network Switches
Addendum to the 3248 and
5224 User’s Guides

Notes, Notices, and Cautions
NOTE: A NOTE indicates important information that helps you make better use of your computer.
NOTICE: A NOTICE indicates either potential damage to hardware or loss of data and tells you
how to avoid the problem.
CAUTION: A CAUTION indicates a potential for property damage, personal injury,
or death.
____________________
Information in this document is subject to change without notice.
© 2003 Dell Computer Corporation. All rights reserved.
Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Trademarks used in this text: Dell, the DELL logo, and PowerConnect are trademarks of Dell Computer Corporation;
Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and
names or their products. Dell Computer Corporation disclaims any proprietary interest in trademarks and trade names
other than its own.
January 2003 P/N K0111 Rev. A01

Addendum to the 3248 and 5224 User’s Guides 3
Addendum to the 3248 and 5224
User’s Guides
NOTE: The graphics in
this section may differ
slightly from the graphics
on your computer.
New Features:
• Remote System Logging
• Secure Access — Secure Shell (SSH), Authentication Settings, and
Secure Hypertext Transfer Protocol (HTTPS)
• Increased Port Security
• Spanning Tree Protocol (STP)
• IP Filtering — Simple Network Management Protocol (SNMP)
• Enhanced Statistics Summaries

4Addendum to the 3248 and 5224 User’s Guides
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System Logs
Remote system logging allows you to configure the logging of system
messages directly from the Web interface and the command line interface
(CLI).
The system log messages are categorized, by severity, into eight levels. The
levels range from 0 for Emergencies to 7 for Debugging. See the following
table for descriptions:
The system allows you to specify which levels are logged to RAM or flash
memory.
To assist in troubleshooting network problems, severe error messages that
are logged to flash memory are permanently stored in the switch. Up to 4 K
log entries can be stored in the flash memory. When the available memory
for logs exceeds 256 KB, the oldest entries are overwritten.
System Logs Configuration
The Switch/General/System Logs page allows you to configure and limit
system messages that are logged to flash or RAM memory. The default is set
for levels 0 to 3 to be logged to flash and levels 0 to 7 to be logged to RAM.
The Switch/General/System Logs page contains the following fields that
can be edited:
•System Log Status — Enables/disables the logging of debug or error
messages to the logging process.
Level Argument Level Description
Emergencies 0 System unusable
Alerts 1 Immediate action needed
Critical 2 Critical conditions
Errors 3 Error conditions
Warnings 4 Warning conditions
Notifications 5 Normal but significant condition
Informational 6 Informational messages only
Debugging 7 Debugging messages

Addendum to the 3248 and 5224 User’s Guides 5
•Flash Level — Limits log messages saved to the switch’s permanent
flash memory for all levels up to the specified level. For example, if
level 3 is specified, all messages from level 0 to level 3 are logged to
flash.
NOTE: The Flash Level
must be equal to or less
than the Ram Level.
•Ram Level — Limits log messages that are saved to the switch’s
temporary RAM memory for all levels up to the specified level. For
example, if level 7 is specified, all messages from level 0 to level 7 are
logged to RAM.
NOTE: System log
messages are logged
every 60 minutes.
To save any changes you make in this page, click Apply Changes. If you do
not want to save the changes, click Refresh.
The following figure is representative of PowerConnect 3248 and 5224.

6Addendum to the 3248 and 5224 User’s Guides
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CLI Commands
The following table summarizes the equivalent CLI commands for items in
the Switch/General/System Logs page.
Example
Console(config)#logging on
Console(config)#logging history ram 0
Console(config)#
Console#show logging flash
Syslog logging: Disable
History logging in FLASH: level errors
Console#
Remote Logs Configuration
The Switch/General/Remote Logs page allows you to configure the logging
of messages that are sent to syslog servers or other management stations.
You can also limit the error messages sent to messages of a specified level.
Command Usage
logging on Controls the logging of debug or error messages to
a logging process.
The no form command disables the logging
process.
logging history {flash |
ram} level
Limits syslog messages saved to switch memory
based on severity.
The no form command returns the logging of
syslog messages to the default level.
flash — event history stored in flash memory
(permanent memory)
ram — event history stored in temporary RAM
(memory flushed on power reset)
show logging {flash | ram
| trap}
Displays the logging configuration for system and
event messages

Addendum to the 3248 and 5224 User’s Guides 7
The Switch/General/Remote Logs page contains the following fields that
can be edited:
•Remote Log Status — Enables/disables the logging of debug or error
messages to the remote logging process. (Default: Enabled)
•Logging Facility — Sets the facility type for remote logging of syslog
messages. There are eight facility types specified by values of 16 to 23.
The syslog server uses the facility type to dispatch log messages to an
appropriate service. (Default: 23)
•Logging Trap — Limits log messages that are sent to the remote syslog
server for all levels up to the specified level. For example, if level 3 is
specified, all messages from level 0 to level 3 are sent to the remote
server. (Default: 3)
•Host IP List — Displays the list of remote server IP addresses that
receive the syslog messages. The maximum number of host IP
addresses allowed is five.
•Host IP Address — Specifies a new server IP address to add to the
Host IP List.
To add an IP address to the Host IP List, type the new IP address in the
Host IP Address box, and click Add IP Host. To delete an IP address, click
the entry in the Host IP List, and click Remove Host IP.
To save any changes you make in this page, click Apply Changes. If you do
not want to save the changes, click Refresh.

8Addendum to the 3248 and 5224 User’s Guides
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The following figure is representative of PowerConnect 3248 and 5224.
CLI Commands
The following table summarizes the equivalent CLI commands for items in
the Switch/General/Remote Logs page.
Command Usage
logging host
host_ip_address
Adds a syslog server host IP address that receives
logging messages.
The no form command removes a syslog server
host.
logging facility
facility_type
Sets the facility type for remote logging of syslog
messages.
The no form command returns the facility type to
the default.
logging trap level Limits syslog messages saved to a remote server
based on severity.
The no form command returns the remote logging
of syslog messages to the default level.

Addendum to the 3248 and 5224 User’s Guides 9
Example
Console(config)#logging host 10.1.0.9
Console(config)#logging facility 23
Console(config)#logging trap 4
Console(config)#
Console#show logging trap
Syslog logging: Enable
REMOTELOG status: enable
REMOTELOG facility type: local use 7
REMOTELOG level type: Warning conditions
REMOTELOG server ip address: 10.1.0.9
REMOTELOG server ip address: 0.0.0.0
REMOTELOG server ip address: 0.0.0.0
REMOTELOG server ip address: 0.0.0.0
REMOTELOG server ip address: 0.0.0.0
Console#
Security
The Switch/Security page contains new links to Secure Shell (SSH) and
Secure Hypertext Transfer Protocol (HTTPS) configuration. The RADIUS
Settings page was renamed Authentication Settings and updated to
include Terminal Access Controller Access Control System Plus
(TACACS+).
• SSH
• Authentication Settings
•HTTPS
show logging {flash | ram
| trap}
Displays the logging configuration for system and
event messages
Command Usage

10 Addendum to the 3248 and 5224 User’s Guides
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Secure Shell
The Secure Shell (SSH) server feature provides remote management access
using encrypted paths between the switch and SSH-enabled management
station clients.
NOTE: There are two
versions of the SSH
protocol currently
available: SSH v1.
x and
SSH v2. x . The switch
supports only SSH v1.5.
•SSH Server Status — Allows you to enable/disable the SSH server
feature on the switch. (Default: Enabled)
•SSH authentication timeout — Specifies the time interval in seconds
that the SSH server waits for a response from a client during an
authentication attempt. (Range: 1 to 120 seconds; Default: 120 seconds)
•SSH authentication retries — Specifies the number of authentication
attempts that a client is allowed before authentication fails and the
client must restart the authentication process. (Range: 1 to 5 times;
Default: 3)
To save any changes you make in this page, click Apply Changes. If you do
not want to save the changes, click Refresh.
The following figure is representative of PowerConnect 3248 and 5224.