Highlights
• Connects up to 48 network devices - PCs, printers, and servers - to share and transfer files and videos across your network
•
Power over Ethernet easily and cost-effectively powers wireless access
points, video cameras, and other network-connected endpoints
•
Enhanced QoS helps ensure a consistent network experience and supports
networked applications including voice, video, and data storage
• Strong security protects network traffic to keep unauthorized users off the network
Overview
The Cisco®
SRW248G4P 48-Port 10/100 + 4-Port Gigabit Switch (Figure 1) offers a
highly secure means of expanding your network. Web-based configuration
of the switch is secured using SSL. User access is verified with 802.1X
security using a RADIUS authentication mechanism and can also be
controlled using MAC-based filtering.
Extensive
quality of service (QoS) features makes the solution ideal for
real-time applications such as voice and video. The four priority
queues, together with the weighted round-robin and strict priority
scheduling techniques, facilitate efficient coexistence of real-time
traffic with data traffic, allowing each to meet its QoS needs.
Individual users or applications can be prioritized above others using
various class of service options - by port, Layer 2 priority (802.1p),
and Layer 3 priority (type of service [ToS] or differentiated services
code point [DSCP]). Intelligent broadcast and multicast storm control
minimizes and contains the effect of these types of traffic on regular
traffic. Internet Group Management Protocol (IGMP) snooping limits
bandwidth-intensive video traffic to only the requestors without
flooding all users. Incoming traffic can be policed and outgoing
traffic can be shaped, allowing you to control network access and
traffic flow.
Other
features of the Cisco SRW248G4P allow you to expand and grow your
network of switches. Link aggregation allows multiple high-bandwidth
trunks between switches to be set up. This also provides reliability,
in that the system continues to operate if one of the links breaks.
Spanning Tree Protocol (STP), Fast STP, Rapid STP (RSTP), and Multiple
STP (MSTP) allow you to build a mesh of switches, increasing the
availability of the system.
The
rich features of the WebView management software include Simple Network
Management Protocol (SNMP), Remote Monitoring (RMON), Telnet, and HTTP
management options, allowing you to flexibly integrate and manage these
devices in your network.
Automatic
load sensing in the power control circuitry automatically detects Power
over Ethernet (PoE) on the access points before providing power. Power
feeding of Ethernet is limited for the fixed 10BASE-T/100BASE-TX ports.
The switch can provide maximum output power per PoE port of up to 15.4W
on 24 ports or 7.5W on 48 ports simultaneously. Each port has
independent overload and short-circuit protection, with LED indicators
for power status. Cable diagnostics can be performed using the switch's
WebView utility.
Features
• Forty eight 10/100 switched RJ-45 ports deliver up to 4 Gbps of throughput per port
• Two shared 10/100/1000 mini Gigabit Interface Converter (mini-GBIC) ports
• Switching capacity delivers wire-speed performance at 17.6 Gbps, nonblocking capacity
• WebView monitoring allows administrators to view the current status and configuration using their favorite web browser
•
PoE on forty-eight 10/100 ports supplies up to 7.5W per port, or on
twenty-four 10/100 ports supplies up to IEEE 802.3af maximum of 15.4W
per port
• Automatic medium dependent interface (MDI) and MDI crossover (MDI-X) cable detection
• Port-based and 802.1Q-based VLANs support up to 256 VLANs
• Port trunking for up to eight groups allows you to increase your bandwidth for each uplink or server connection
• Port configuration settings for link, speed, auto MDI/MDI-X, flow control, and more
• Fully rack mountable using the included rack-mounting hardware
• MAC address table supports up to 8000 MAC address entries
•
Optimal platform to support real-time applications such as voice and
video by providing features like IGMP snooping, multiple queues (four)
with appropriate scheduling techniques, prioritization of traffic based
on port, 802.1p, IP ToS/precedence/DSCP, TCP/User Datagram Protocol
(UDP) port, and line rate forwarding mechanisms
• Enhanced QoS functions, including rate limiting for ingress/egress and per flow at 64 kbps granularity
• Secure control via SSH for Telnet interface and SSL for HTTP interface
• User/network security via 802.1X (with RADIUS authentication) and MAC-based filtering
•
Advanced security access control list (ACL) can deny or limit network
access based on Layer 1 through 4 information such as MAC, Ethernet
type, VLAN ID, IP address, protocol ID, or TCP/UDP port
• Containment of storms - broadcast and multicast
• Expandability and availability increased across multiple switches using link aggregation
• SNMP and RMON management expand your visibility options
