3Com 3CBLSG48 Support Question
3Com 3CBLSG48 Support Question
Find answers below for this question about 3Com 3CBLSG48 - Baseline Switch 2948-SFP.Need a 3Com 3CBLSG48 manual? We have 1 online manual for this item!
Question posted by jpanopoul on February 1st, 2011
Some Ports On Switch Not Working
i have change utp cable ,ethernet card on computer ,power off-on the switch bad the port on switch not working
the Computer that connected in the door loses the network and after xxxxx retry the port working again
PLEASE HELP ME ABOUT THE PROBLEM WITH PORTS ON SWITCH
Current Answers
Related 3Com 3CBLSG48 Manual Pages
User Guide - Page 3
...-to-navigate. Using the 3Com Web Interface - Provides information for configuring both system and network security, including traffic control, ACLs, and device access methods. It covers summaries of hardware and software features. Provides information for the 3Com® Baseline Switch 2948-SFP Plus. Viewing Basic Settings - The User
Guide provides the following sections:
Getting Started...
User Guide - Page 12
... about the 3Com® Baseline Switch 2948-SFP Plus and how they can be used in your network. It covers summaries of the hardware and software features, and the following topics:
About the Switch 2948 Front Panel Detail LED Status Indicators System Specifications Installing the Switch Setting Up for Management Methods of Managing a Switch Switch Setup Overview Using the Command...
User Guide - Page 13
...-based mirroring
Summary of Hardware Features
Table 1 summarizes the hardware features supported by the Switch 2948. The Switch 2948 includes the following model:
Baseline Switch 2948-SFP Plus 48-Port
The Switch 2948 features the following advantages:
Full Gigabit speed access ports
Jumbo frames
Port security
Link aggregation control protocol (LACP)
Up to 8,000 supported
Auto-negotiation...
User Guide - Page 14
... (using the IEEE Std 802.ID, 1998 Edition): Four traffic queues per port
Ethernet, Fast and Gigabit Ethernet Ports
Auto-negotiating 10/100/1000BASE-T ports
SFP Ethernet Ports
Supports fiber Gigabit Ethernet long-wave (LX), and fiber Gigabit Ethernet short-wave (SX) transceivers in any combination. The Switch 2948 ports are supported. Figure 1 Switch 2948 SFP 48-Port-front panel
User Guide - Page 15
... system has entered the fail safe
mode. The LED flashes quickly when
the port is not connected. Active OFF The SFP module is not inserted or is sending or receiving data.
CHAPTER 1: GETTING STARTED
LED Status Indicators
The 2948-SFP Plus 48-Port Ethernet switches provide LED indicators on the front panel for your convenience to monitor the...
User Guide - Page 16
... 3 contains the system specifications of the Switch 2948 switch
Specification
Switch 2948-SFP Plus 48-Port 3CBLSG48
Physical dimensions 44×440×265 mm (1.73 X 1.7.3 X 10.43 in Appendix B "Device Specifications and Features". on the front panel Four Gigabit SFP Combo ports
AC Input voltage
Rated voltage range: 100-240 VAC, 50/60 Hz
Power consumption 70 W (full load)
Operating...
User Guide - Page 26
... match the default settings for more information. 3 Power up the switch. CHAPTER 1: GETTING STARTED 15
Connecting the Workstation to the Switch 1 Connect the workstation to the console port using the Console Port Workstation
To connect the cable: a Attach the cable's RJ-45 connector to the Console port of the switch b Attach the other end of the cable to the workstation. 2 Open your terminal...
User Guide - Page 28
The following is connected to the network and powered up.
1 Connect to the switch Console port as your chosen management method. CHAPTER 1: GETTING STARTED 17
Viewing IP Information using the Console Port
This section describes how to view the automatically allocated IP information using the console port to manage the switch, you can logout, disconnect the serial cable and close the...
User Guide - Page 29
...over the network. Ensure that you have already set up the switch with RJ-45 connectors. You will only need to the network using a Category 5 twisted pair Ethernet cable with IP....
The switch's Web interface supports both secure (HTTPS) and non-secure (HTTP) connections. Prerequisites Ensure that the switch is connected to enable them if you have changed your browser.
User Guide - Page 62
... that no authentication method is used, and the session is enabled, the port receives limited network access. Disabled -
If a port is denied network access via port-based authentication, but the Guest VLAN is permitted. For example, a network administrator can use Guest VLANs to deny network access via port-based authorization, but grant Internet access to authorized...
User Guide - Page 196
... on the network. With a single click, a user (or even an entire department) can be blocked from connecting to the network. 3Com Network Access Manager leverages the advanced desktop security capabilities of securing the network perimeter by allowing the administrator to roll out network-wide configuration changes with its intelligent VLAN configuration tools and the powerful template based...
User Guide - Page 198
...), IEEE 802.3ab (Gigabit Ethernet), IEEE 802.1D (Bridging)
Safety
UL 60950-1, EN 60950-1, CSA 22.2 No. 60950-1, IEC 60950-1
EMC Emissions
EN55022 Class A, CISPR 22 Class A, FCC Part 15 Subpart B Class A, ICES-003 Class A, VCCI Class A, EN61000-3-2, EN61000-3-3. B
DEVICE SPECIFICATIONS AND FEATURES
Related Standard
The 3Com® Baseline Switch 2948-SFP Plus has been...
User Guide - Page 199
... each port for the highest-level operational mode that share a...Baseline Switch 2948-SFP Plus
Feature
Description
Auto-Negotiation
The purpose of operation. 188 appendix B: DEVICE SPECIFICATION AND FEATURES
Electrical
Line Frequency Input Voltage Current Rating Switch 2948-SFP Plus Maximum Power Consumption Switch 2948-SFP Plus Max Heat Dissipation Switch 2948-SFP...
User Guide - Page 200
...port specific device configuration. DHCP service is stored in network topologies where forwarding loops do not occur. Full 802.1Q VLAN
IEEE 802.1Q defines an architecture for the switch... changes to...Baseline Switch 2948-SFP Plus
Feature
Automatic MAC Addresses Aging
Back Pressure
Description
MAC addresses from which are aged out. ARP is an interface using a serial connection...
User Guide - Page 201
...). Ports are authenticated via an external server. 190 appendix B: DEVICE SPECIFICATION AND FEATURES
Table 11 Features of the Baseline Switch 2948-SFP Plus
Feature
IGMP Snooping
Description
IGMP Snooping examines IGMP frame contents, when they are forwarded by the device from work stations configured for Multicast sessions, and which allows one-to-many and many connections for hubs...
User Guide - Page 202
..., allowing real-time information to be manually entered in the Bridging Table.
Port Mirroring Port mirroring monitors and mirrors network traffic by forwarding copies of the Baseline Switch 2948-SFP Plus
Feature
Port-based Virtual LANs
Description
Port-based VLANs classify incoming packets to VLANs based on ports. Events are stored in the Bridging Table, as SNMP traps to a Trap...
User Guide - Page 203
...connections are defined between 2 ports by an IP address and a 16-bit port number. Virtual Cable Testing
VCT detects and reports copper link cabling occurrences, such as belonging to a VLAN based on either the VLAN tag or based on a combination of the ingress port... switching ports that comprise a single broadcast domain. TCP ports are collections of the Baseline Switch 2948-SFP Plus...
User Guide - Page 210
... GUIDE
This section describes using the CLI via a console port:
1 Connect the RJ-45 cable to the Console port of the switch to the serial port of the terminal or computer running the terminal emulation application... console port. Using the CLI is required. The Login prompt displays:
Login:
2 Enter your User Name at The Login prompt. Getting Started
Using the CLI, network managers enter...
User Guide - Page 222
...IEEE 802.1X Port Authentication standard. Extensible EAPOL is requested by this switch to verify Authentication the network access rights for VLANs to communicate across switched networks.
IEEE 802...Provides a framework for up to eight traffic classes and allows switches to the Class of service (QoS) in Ethernet networks.
appendix F: gLOSSARY 211
Differentiated DSCP uses a six-bit...
User Guide - Page 231
... the user should consult the dealer or an experienced radio/television technician for the Baseline Switch 2948-SFP Plus at http://support.3com/doc/BL_WEITCH_2948_EU_DOC.pdf ICES STATEMENT
CE STATEMENT (EUROPE)
... respect to correct the interference at their own expense. Relocate the equipment with cables which case the user will be required to correct the interference by European Directive...
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