3com 3CR17251-91 Guide De Spécification
and DES 56/168-bit
†
encryption help secure Layer 3
protocols and management controls such as SSh v2
and SNMP. IEEE 802.1X RADIUS/TACACS+ network
login and RADIUS Authenticated Device Access (RADA)
enforce access control at the network edge.
and SNMP. IEEE 802.1X RADIUS/TACACS+ network
login and RADIUS Authenticated Device Access (RADA)
enforce access control at the network edge.
PRIORITY FOR CONVERGED BUSINESS TRAFFIC
Next-generation traffic prioritization features—
including advanced policy-based Class of Service/
Quality of Service (CoS/QoS), eight priority queues,
committed access rates, bandwidth limiting and
filtering and more—identify and optimize delay-
sensitive traffic such as voice and video. To help
assure this optimization, switches can be configured
to automatically isolate voice traffic from 3Com and
other IP telephony systems within a voice-dedicated
VLAN.
including advanced policy-based Class of Service/
Quality of Service (CoS/QoS), eight priority queues,
committed access rates, bandwidth limiting and
filtering and more—identify and optimize delay-
sensitive traffic such as voice and video. To help
assure this optimization, switches can be configured
to automatically isolate voice traffic from 3Com and
other IP telephony systems within a voice-dedicated
VLAN.
UNIQUE AC/DC POWERED OPERATION
3Com Switch 5500G products are the first stackable
switches to support multiple power schemes right
out of the box, with a choice of AC, AC and DC, or DC
operation. Select models also support IEEE 802.3af
PoE, enabling power to be injected out to the edge
of the network without the need to install additional
wires or upgrade existing power supplies. The
customer-swappable power supply unit enables non-
PoE models to be easily upgraded to PoE capability.
switches to support multiple power schemes right
out of the box, with a choice of AC, AC and DC, or DC
operation. Select models also support IEEE 802.3af
PoE, enabling power to be injected out to the edge
of the network without the need to install additional
wires or upgrade existing power supplies. The
customer-swappable power supply unit enables non-
PoE models to be easily upgraded to PoE capability.
REDUNDANT POWER SYSTEM SUPPORT
All 3Com Switch 5500G models support a redundant
power system (RPS) connection.
power system (RPS) connection.
RPS units provide these benefits:
› For PWR switches, an RPS can deliver more power
budget for IEEE 802.3af Power over Ethernet than
what the switches alone can provide. For example,
the Switch 5500G PWR 48-port switch has a PoE
power budget of 300 Watts, which means that less
than half of the ports can provide the full 802.3af PoE
power of 15.4 Watts. With an RPS providing power, all
48-ports can provide a full 15.4 Watts of PoE power.
what the switches alone can provide. For example,
the Switch 5500G PWR 48-port switch has a PoE
power budget of 300 Watts, which means that less
than half of the ports can provide the full 802.3af PoE
power of 15.4 Watts. With an RPS providing power, all
48-ports can provide a full 15.4 Watts of PoE power.
› They deliver redundant power to switches so there is
continued operation should the switch unit power
supply fail. This allows for continuous operation of
advanced Enterprise networks, particularly impor-
tant for converged networks running IP phones on
the network.
supply fail. This allows for continuous operation of
advanced Enterprise networks, particularly impor-
tant for converged networks running IP phones on
the network.
3Com H3C RPS Systems
3Com switches are compatible with 3Com h3C
®
RPS
solutions. These are enterprise-class power
redundancy systems that work with many 3Com fixed-
configuration switches. 3Com Corporation
manufactures networking equipment under the h3C
brand for sale into many markets.
redundancy systems that work with many 3Com fixed-
configuration switches. 3Com Corporation
manufactures networking equipment under the h3C
brand for sale into many markets.
2
3COM SWITCH 5500G GIGABIT FAMILY
KEY BENEFITS
(continued)
Provides up to 56 Gigabit Layer 2/3/4 ports per switch and up to 448 Gigabit ports in a stack eight units high, managed as a single-IP entity
Equipped with four dual-purpose ports on each switch providing either 10/100/1000 or SFP Fast
¥
/Gigabit Ethernet connectivity
Offers optional 1- and 2-port 10-Gigabit and 8-port SFP Gigabit modules for links to the network core
Delivers wirespeed and line-rate performance on all ports
Offers OSPF and multicast routing, 3Com XRN stacking technology and IEEE 802.3af Power over Ethernet
Provides high resiliency and continuous availability with active load sharing and support for ultra-fast failover recovery
Implements multilayer distributed security including ACLs, DES 56/168-bit
†
encryption, IEEE 802.1X network login and RADA authentication
Prioritizes converged network traffic with advanced CoS/QoS and other features to ensure high levels of service for latency-sensitive applications
Supports advanced enterprise switching technology including Border Gateway Protocol (BGP), VLAN VPN (Q-in-Q) and others
Leverages existing power schemes in data centers and switching infrastructures with built-in support for both AC and DC power
Consolidates administrative control and enhances core-to-edge visibility with an operating system shared with 3Com modular switches and routers
Offers an SFP-based model with 24 SFP Gigabit ports, four of which are dual-purpose
Backed by top-flight service, support and training from 3Com and 3Com authorized partners
FEATURE HIGHLIGHTS
¥
two of the four SFP ports are capable of supporting Fast Ethernet fiber, via 1000baSE-X compatible SFP transceivers 3CSFP9-81 and 3CSFP9-82.
†
168-bit encryption not available in all countries. Refer to www.3com.com for details.