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SPECIFICATIONS
MANAGEMENT
Command Line Interface (CLI)
configuration mode
Configuration via the control console
port
Local/remote configuration via Telnet
Remote configuration via modem dial-
up
System configuration with SNMP v1,
2 and 3
‡
Secure Shell Version 2 (SSH v2) for
management access
‡
Comprehensive statistics, including
ACL/QoS and IP interface
Remote Monitoring (RMON) groups
statistics, history, alarm and events
System log
Syslog
Detailed alarm and debug information
Front panel indicators for port and
unit status information
Hierarchical alarms; alarm generation
and filtering
Supports ping and traceroute
Configuration file for backup and
restore, stored in non-volatile
memory; multiple configuration files
available
Supports multiple software images and
bank swap, stored in non-volatile
memory
Backup and restore of software images
Network Time Protocol (NTP)
Device Link Detection Protocol (DLDP)
IGMP proxy
DHCP server
DNS client
Port mirroring
Remote port mirroring
Flow-based bandwidth management,
with flows identified through Access
Control Lists (ACLs)
Minimum and maximum thresholds:
64kbit/s increments, 128 traffic classes
per port, 512 flows per class
Random Early Detect/Discard (RED)
queue handling
Queuing algorithms
Strict priority queuing
WRR (Weighted Round Robin)
provided through bandwidth
management
DHCP Relay and UDP Helper
System file transfer mechanisms:
Xmodem, File Transfer Protocol (FTP),
Trivial File Transfer Protocol (TFTP),
Secure File Transfer Protocol (SFTP),
Secure Trivial File Transfer Protocol
(STFTP)
Connectivity: 10BASE-T (RJ-45)
Ethernet, RS-232 control port
Port loopback detection
Cable diagnostic test
‡
SNMP v3 and SSH v2 encryption features are available in the Basic Software with Encryption and Advanced Feature Software versions only.
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(CONTINUED)
3Com Management Applications:
• 3Com Enterprise Management Suite
for flexible, extensible management
in advanced enterprise IT
environments
• 3Com Network Director for
comprehensive, turn-key network
management for the enterprise
• 3Com Network Supervisor for basic,
turn-key network management for
mid-market businesses
AVAILABLE SWITCH FABRICS
96 Gbps Switch Fabric
Chassis model compatibility: Switch
7758, 7757 and 7754 and Switch
7708R and Switch 7700 7-slot and
4-slot legacy models
Connections: 4 SFP Gigabit ports
(SFPs sold separately)
CONNECTIVITY
Mix and match in available payload
slots:
48-port 10BASE-T/100BASE-TX
48-port 10BASE-T/100BASE-TX PoE
20-port 10/100/1000BASE-T
48-port 10/100/1000BASE-T
48-port 10/100/1000BASE-T PoE
12-Port 10/100/1000BASE-T & 4-Port
1000BASE-X (SFP)
4-Port 10/100/1000BASE-T & 12-Port
1000BASE-X (SFP)
20-port 1000BASE-X (SFP)
48-Port 100BASE-FX (SFP)
1-port 10GBASE-X (XENPAK)
DIMENSIONS
Switch 7758 8-slot:
Height: 51.9 cm (20.4 in); width: 43.6
cm (17.2 in); depth: 48.0 cm (18.9 in)
Weight (fully loaded chassis): 80 kg
(176 lbs)
Switch 7757 7-slot:
Height: 48.6 cm (19.1 in); width: 43.6
cm (17.2 in); depth: 48.0 cm (18.9 in)
Weight (fully loaded chassis): 70 kg
(154 lbs)
Switch 7754 4-slot:
Height: 35.2 cm (13.8 in); width: 43.6
cm (17.2 in); depth: 48.0 cm (18.9 in)
Weight (fully loaded chassis): 50 kg
(110 lbs)
SWITCH POWER SUPPLY
550 W AC Power Supply; dual power
input connections
Input voltage: 100-240 VAC
autoranging
Operating frequency: 47-63 Hz
Maximum current: 15A at 110 VAC;
7A at 200 VAC
Maximum output power: 460 W
3COM
®
SWITCH 7750 FAMILY
ENVIRONMENTAL
Operating temperature: 0° to 40°C
(32° to 104°F)
Operating humidity: 5% to 85%
non-condensing
Storage temperature: -40° to 70°C
(-40° to 158°F)
Storage humidity: 10% to 90%
non-condensing
Standard: EN 60068 (IEC 68) compliant
MTBF
Switch 7750 96 Gbps Switch Fabric
(3C16886): 46 years (405,000 hours)
Switch 7750/7700 20-port 100BASE-X
SFP (3C16862A): 68 years (594,000
hours)
Switch 7750/7700 20-port
10/100/1000BASE-T (3C16863A):
59 years (519,000 hours)
Switch 7750/7700 1-port 10GBASE-X
XENPAK (3C16875A): 61 years
(539,000 hours)
Switch 7750/7700 48-port
10/100/1000BASE-T (3C16888):
48 years (418,000 hours)
Switch 7750/7700 48-port
10/100BASE-TX (3C16889):
48 years (421,000 hours)
Switch 7750 48-port
10/100/1000BASE-T PoE (3C16890):
39 years (342,000 hours)
Switch 7750 48-port 10/100BASE-TX
PoE (3C16891): 44 years (389,000
hours)
Switch 7750/7700 48-port 100BASE-X
SFP (3C168915): 74 years (653,000
hours)
Switch 7750/7700 4-port
10/100/1000BASE-T & 12-port
1000BASE-X SFP (3C168916): 72 years
(628,000 hours)
Switch 7750/7700 12-port
10/100/1000BASE-T & 4-port
1000BASE-X SFP (3C168917): 66 years
(576,000 hours)
Switch 7750 External PoE Power Rack
(3C16883): 18 years (158,000 hours)
Switch 7750/8800 PoE Power Supply
Unit (3C16884): 43 years (375,000
hours)