Brand: Dell
Category: Networking Hardware
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for PowerConnect 3248
Uploaded: Sept. 12, 2025, 4:25 a.m.
Manual Publish Date: 2002-08-01
Warranty Information
Warranty information is not explicitly detailed in the provided document excerpt.
System Overview
The Dell PowerConnect 3248 is a Fast Ethernet Managed Switch offering 48 auto-sensing 10/100BASE-TX ports and two auto-sensing Gigabit Ethernet ports with SFP transceiver slots. It supports IEEE 802.3u, 802.3z, and 802.3ab standards, flow control, VLANs, and Quality of Service (QoS).
Management Features
The switch can be managed via a web-based interface (HTTP), a command-line interface (CLI) through serial port or Telnet, and SNMP. Key management features include IP address assignment (static, DHCP, BOOTP), password protection, SNMP settings, RADIUS access control, and firmware upgrades.
Port Management
Port configuration allows for setting speed, duplex mode, flow control, and autonegotiation. Other port-related functions include trunking, broadcast control, and port mirroring.
Troubleshooting and error codes
| Command | Usage |
|---|---|
| show system | Displays system information |
| hostname name | Specifies or modifies the system name for this device |
| snmp-server contact string | Sets the system contact (sysContact) string |
| snmp-server location text | Sets the system location string |
| show version | Displays hardware and software version information for the system, as well as the unit's power status |
| show logging {flash | ram} | Displays the logging configuration for system and event messages |
| ip address {ip-address netmask | bootp | dhcp} | Sets the primary IP address for this device. Use the no form command to remove the IP address, or to disable IP address assignment through BOOTP or DHCP. |
| ip default-gateway gateway | Establishes a static route between the switch and management stations that exist on another network segment. |
| show ip interface | Displays the usability status of an IP interface. |
| show ip redirects | Shows the default gateway configured for this device. |
| ip dhcp restart | Resubmits a DHCP client request |
| enable password [level level] {0 | 7} password | Use this command to control access to the Privileged Exec level from the Normal Exec level. For the {0 | 7} parameter, 0 means plain password and 7 means encrypted password. The Privileged Exec level is 15 and the default password is super. |
| username name {access-level level | nopassword | password {0 | 7} password} | Use this command to configure user name authentication at login. Use the no form command to remove a user name. The device has two predefined privilege levels: 0: Normal Exec and 15: Privileged Exec. The default user names are admin for the Privileged Exec level, and guest for the Normal Exec level. NOTE: Only the CLI allows user names to be created and deleted. |
| authentication login {radius | local | radius local | local radius} | Defines the login authentication method and precedence. |
| radius-server host host_ip_address | Specifies the RADIUS server IP address. |
| radius-server port port_number | Sets the RADIUS server UDP port number. |
| radius-server key key_string | Sets the RADIUS encryption key (up to 20 characters). |
| radius-server retransmit number_of_retries | Sets the number of times the switch attempts to authenticate logon access through the RADIUS server. (The range is 1-30.) |
| radius-server timeout number_of_seconds | Sets the number of seconds the switch waits for a reply before resending a request. (The range is 1-65535.) |
| copy tftp file {boot-rom | config | opcode}: filename | Downloads a code image to the switch's flash memory from a TFTP server |
| boot system {boot-rom | config | opcode}: filename | Specifies the file or image used to start up the system |
| dir [boot-rom | config | opcode [:filename]] | Displays a list of files in flash memory |
| copy file {file | running-config | startup-config | tftp} | Uploads a configuration file from the switch's flash memory to a TFTP server |
| copy tftp {file | running-config | startup-config} | Downloads a configuration file to the switch's flash memory from a TFTP server |
| reload | Restarts the system |
| copy running-config startup-config | Saves the running configuration file to the startup configuration. |