General Information |
Manufacturer |
Cisco |
Manufacturer Part Number |
SF300-28PP-K9 |
Product Name |
Small Business 300 Series 28-Port 10 100 PoE L3
Managed Switch with Gigabit Uplinks |
Overview |
The Cisco 300 Series, part of the Cisco
Small Business line of network solutions, is a portfolio of affordable
managed switches that provides a reliable foundation for your business
network. These switches deliver the features you need to improve the
availability of your critical business applications, protect your
sensitive information, and optimize your network bandwidth to deliver
information and applications more effectively. Easy to set up and use,
the Cisco 300 Series provides the ideal combination of affordability and
capabilities for small businesses, and helps you create a more
efficient, better-connected workforce.
The Cisco 300 Series is broad portfolio of fixed-configuration managed
Ethernet switches. Models are available with 8 to 48 ports of Fast
Ethernet and 10 to 52 ports of Gigabit Ethernet connectivity, providing
optimal flexibility to create exactly the right network foundation for
your business. However, unlike other small business switching solutions
that provide managed network capabilities only in the costliest models,
all Cisco 300 Series Switches support the advanced security management
capabilities and network features you need to support business-class
data, voice, security, and wireless technologies. At the same time,
these switches are simple to deploy and configure, allowing you to take
advantage of the managed network services your business needs. |
Features |
-
High
performance and reliability:
Cisco 300 Series Switches have been
rigorously tested to deliver the high availability and performance
you expect from a Cisco switch. The solutions speed up file transfer
times and improve slow, sluggish networks, while keeping your vital
business applications available and preventing costly downtime. As a
managed switching solution, the Cisco 300 Series also gives you the
flexibility to manage and prioritize high-bandwidth traffic such as
voice. That means you can empower your employees with
state-of-the-art communication and productivity solutions, without
draining the performance of your other business applications.
-
Fast, easy
setup and configuration:
Cisco 300 Series Switches are designed to be easy to use and manage
by small businesses and the partners who serve them. The included
device manager software provides an intuitive, web-based interface
to simplify setup, security, and quality of service (QoS) traffic
prioritization, allowing even users without IT expertise to
configure the switch in minutes. Cisco also provides a Cisco FindIT
Network Discovery Utility. This utility that works through a simple
toolbar on the user’s web browser to discover Cisco devices in the
network and display basic information, such as serial numbers and IP
addresses, to aid in the configuration and deployment of Cisco Small
Business products. For more information, and to download the
utility, please visit
http://www.cisco.com/go/findit.
These switches use Cisco Discovery Protocol as well as Link Layer
Discovery Protocol (LLDP-MED) to automatically detect all the
devices connected to your network, and then automatically configure
themselves for the appropriate connectivity and instructs the
devices to use appropriate voice VLAN or QoS parameters. For more
advanced capabilities and hands-on control, the switches support
Smartport roles which configure the ports with specific levels of
Security, QoS, and availability according to the type of connected
device, based on Cisco best practices and pretested configurations.
The Auto Smartports feature applies the intelligence delivered
through the Smartport roles and applies it automatically to the port
based on the devices discovered over CDP or LLDP-MED. This
facilitates zero touch deployments. Although the Cisco 300 Series is
designed to be deployed without using a command-line interface
(CLI), Cisco Textview is available for those who prefer to use
text-based configuration. Together, these features reduce the time
your staff must devote to network deployment, management, and
troubleshooting.
-
Strong
security: The
Cisco 300 Series Switches provide a high level of security and give
you fine- grained control to safeguard your network from
unauthorized users. Advanced security features include:
-
Embedded
security to protect management data traveling to and from the
switch and encrypt network communications.
-
Extensive
access control lists (ACLs) to restrict sensitive portions of
the network from unauthorized users and guard against network
attacks.
-
Guest
virtual LANs (VLANs) to let you provide Internet connectivity to
nonemployee users while isolating critical business services
from guest traffic.
-
Support for
advanced network security applications such as IEEE 802.1X port
security to tightly limit access to specific segments of your
network. Web based authentication provides a consistent
interface to authenticate all types of host devices and
operating systems, without the complexity of deploying IEEE
802.1X clients on each endpoint.
-
Time based
ACLs and Port Operation restrict access to the network during
predesignated times, such as business hours.
-
Security
mechanisms such as, Bridge Protocol Data Unit (BPDU) Guard and
broadcast/multicast/unknown unicast storm control, protect the
network from invalid configurations or malicious intent.
-
Secure Core
Technology (SCT) helps ensure that the switch will receive and
process management and protocol traffic no matter how much
traffic is received.
-
Advanced
defense mechanisms, including Dynamic ARP Inspection (DAI), IP
Source Guard, and Dynamic Host Configuration Protocol (DHCP)
snooping, detect and block deliberate network attacks.
Combinations of these protocols are also referred to as IPMB
(IP-MAC-port binding).
-
IPv6 First
Hop Security extends the advanced threat protection to IPv6.
This comprehensive security suite includes ND inspection, RA
guard, DHCPv6 guard and neighbor binding integrity check,
providing unparalleled protection against a vast range of
address spoofing and man in the middle attack on IPv6 networks.
-
DOS
(denial-of-service) attack prevention maximizes network uptime
in the presence of an attack.
-
Protection
of management sessions using Radius, TACACS+ and local database
authentication as well as secure management sessions over SSL,
SSH, and SNMPv3.
-
Power over
Ethernet: Cisco
300 Series Switches are available with up to 48 PoE ports of Fast
Ethernet or Gigabit Ethernet connectivity. This capability
simplifies advanced technology deployments such as IP telephony,
wireless, and IP surveillance by allowing you to connect and power
network endpoints over a single Ethernet cable. With no need to
install separate power supplies for IP phones or wireless access
points, you can take advantage of advanced communications
technologies more quickly, and at a lower cost. Some models support
both IEEE 802.3af PoE and IEEE 802.3at PoE+ while others support
IEEE 802.3af PoE only.
-
IP
telephony support:
Cisco 300 Series Switches include
embedded QoS intelligence to prioritize delay-sensitive services
such as voice and video, simplify unified communications
deployments, and help ensure consistent network performance for all
services. For example, automated voice VLAN capabilities let you
plug any IP phone (including third-party phones) into your IP
telephony network and receive an immediate dial tone. The switch
automatically configures the device with the right VLAN and QoS
parameters to prioritize voice traffic.
-
Networkwide Automatic Voice Deployment:
Using a combination of CDP, LLDP-MED,
Auto Smartports, and VSDP (Voice Services Discovery Protocol – a
unique patent-pending Cisco protocol), customers can deploy an
end-to-end voice network dynamically. The switches in the network
automatically converge around a single voice VLAN and QoS parameters
and then propagate them out to the phones on the ports where they
are discovered. For example, automated voice VLAN capabilities let
you plug any IP phone (including third-party phones) into your IP
telephony network and receive an immediate dial tone. The switch
automatically configures the device with the right VLAN and QoS
parameters to prioritize voice traffic.
-
Advanced
network management capabilities:
As managed switches, the Cisco 300
Series lets you use a variety of advanced features to control
traffic over your network. Features include:
-
Static routing/Layer 3 switching between VLANs:
This capability
allows you to segment your network into separate workgroups and
communicate across VLANs without degrading application
performance. As a result, you can manage internal routing with
your switches and dedicate your router to external traffic and
security, helping your network run more efficiently.
-
IPv6 support:
As the IP network addressing
scheme evolves to accommodate more devices, you can make sure
that your network is ready. The Cisco 300 Series provides native
support for IPv6, the newest version of the Internet Protocol,
as well as the previous IPv4 standard. As a result, you will be
able to move up to the next generation of networking
applications and operating systems without an extensive
equipment upgrade.
-
Dual image support:
With the ability to maintain dual
images of your switches, you can perform software upgrades
without having to take the network offline and without worrying
about an outage during an upgrade.
-
Dual Configuration files support:
Allows configuring the device, validating that it is configured
correctly and then saving this configuration to become effective
after reboot. Additionally, a mirror configuration file,
providing automatic back-up of the latest stable configuration
file maximizes network uptime.
-
Remote management:
Using Simple Network Management
Protocol (SNMP), you can set up and manage all switches and
other Cisco devices in your network remotely, instead of having
to directly connect to them.
-
Additional management options:
The switches can be fully
managed using the Web GUI or using a full command-line interface
(CLI).
-
Optimal
energy efficiency:
Cisco 300 Series Switches are designed
with a variety of power-saving features across all models, providing
the industry’s broadest portfolio of “green” switches. These
switches optimize power use to protect the environment and reduce
energy costs, without compromising performance. Power-saving
features include:
-
The latest
application-specific integrated circuits (ASICs), using
low-power 65-nanometer technology (these chipsets allow for
lower power consumption and thinner, more efficient designs).
-
Support for
the Energy Efficient Ethernet (IEEE 802.3az) standard, which
reduces energy consumption by monitoring the amount of traffic
on an active link and putting the link into a sleep state during
quiet periods.
-
Automatic
power shutoff on ports when a link is down.
-
Embedded
intelligence to adjust signal strength based on cable length.
-
Fanless
design in most models, which reduces power consumption,
increases reliability, and provides quieter operation.
-
LEDs can be
turned off to conserve power.
-
Expansion
ports: The
Cisco 300 Series provides more ports per Gigabit Ethernet switch
than traditional switch models, giving you more flexibility to
connect and empower your business. Gigabit Ethernet models feature
28- and 52-port switches, versus traditional devices that offer 20
or 44 ports with four shared ports giving you more value. The Cisco
300 Series also offers mini gigabit interface converter (mini-GBIC)
expansion slots that give you the option to add fiber-optic or
Gigabit Ethernet uplink connectivity to the switch. With the ability
to increase the connectivity range of the switches, you have more
flexibility to design your network around your unique business
environment, and to easily connect switches on different floors or
across the business.
-
Multiple
languages: The
Cisco 300 Series is available in seven languages: English, French,
German, Italian, Spanish, Japanese, and simplified Chinese. All
product user interfaces and documentation are translated, giving you
the ability to select your preferred language.
-
Peace of
mind and investment protection:
Cisco 300 Series Switches offer the
reliable performance, investment protection, and peace of mind you
expect from a Cisco switch. When you invest in the Cisco 300 Series,
you gain the benefit of:
-
Cisco
limited lifetime warranty with next business day advance
replacement (where available).
-
Rigorous
testing to help ensure easy integration and compatibility with
other Cisco networking and communications products, including
the complete Cisco Small Business portfolio.
-
Service
and Support:
Cisco 300 Series Switches are backed by the Cisco Small Business
Support Service, which provides affordable peace-of-mind coverage.
This subscription-based service helps you protect your investment
and derive maximum value from Cisco Small Business products.
Delivered by Cisco and backed by your trusted partner, this
comprehensive service includes software updates, access to the Cisco
Small Business Support Center, and extends technical service to
three years. Cisco Small Business products are supported by
professionals in Cisco Small Business Support Center locations
worldwide who are specifically trained to understand your needs. The
Cisco Small Business Support Community, an online forum, enables you
to collaborate with your peers and reach Cisco technical experts for
support information.
|
Specifications |
Performance |
Switching capacity and forwarding rate |
41.67 Capacity in Millions of Packets per
Second (mpps) (64-byte packets)
56.0 Switching Capacity in Gigabits per Second (Gbps) |
Layer 2 Switching |
Spanning Tree Protocol (STP) |
Standard 802.1d Spanning Tree support
Fast convergence using 802.1w (Rapid Spanning Tree [RSTP]), enabled by
default
8 instances are supported
Multiple Spanning Tree instances using 802.1s (MSTP) |
Port grouping |
Support for IEEE 802.3ad Link Aggregation
Control Protocol (LACP)
● Up to 8 groups
● Up to 8 ports per group with 16 candidate ports for each (dynamic)
802.3ad link aggregation |
VLAN |
Support for up to 4096 VLANs
simultaneously Port-based and 802.1Q tag-based VLANs MAC-based VLAN |
Management VLAN |
Private VLAN Edge (PVE), also known as
protected ports, with multiple uplinks
Guest VLAN Unauthenticated VLAN
Dynamic VLAN assignment via Radius server along with 802.1x client
authentication
CPE VLAN |
Voice VLAN |
Voice traffic is automatically assigned to
a voice-specific VLAN and treated with appropriate levels of QoS.
Auto voice capabilities deliver network-wide zero touch deployment of
voice endpoints and call control devices. |
Multicast TV VLAN |
Multicast TV VLAN allows the single
multicast VLAN to be shared in the network while subscribers remain in
separate VLANs (Also known as MVR) |
Q-in-Q VLAN |
VLANs transparently cross a service
provider network while isolating traffic among customers |
Generic VLAN Registration Protocol
(GVRP)/Generic Attribute Registration Protocol (GARP) |
Protocols for automatically propagating
and configuring VLANs in a bridged domain |
Unidirectional Link Detection (UDLD) |
UDLD monitors physical connection to
detect unidirectional links caused by incorrect wiring or cable/port
faults to prevent forwarding loops and blackholing of traffic in
switched networks |
Dynamic Host Configuration Protocol (DHCP)
Relay at Layer 2 |
Relay of DHCP traffic to DHCP server in
different VLAN. Works with DHCP Option 82 |
Internet Group Management Protocol (IGMP)
versions 1, 2, and 3 snooping |
IGMP limits bandwidth-intensive multicast
traffic to only the requesters; supports 1K multicast groups
(source-specific multicasting is also supported) |
IGMP Querier |
IGMP querier is used to support a Layer 2
multicast domain of snooping switches in the absence of a multicast
router |
Head-of-line (HOL) blocking |
HOL blocking prevention |
Jumbo Frames |
Up to 9K (9216) bytes |
Layer 3 |
IPv4 routing |
Wirespeed routing of IPv4 packets
Up to 512 static routes and up to 128 IP interfaces |
Classless Inter-Domain Routing (CIDR) |
Support for CIDR |
Layer 3 Interface |
Configuration of layer 3 interface on
physical port, LAG, VLAN interface or Loopback interface |
DHCP relay at Layer 3 |
Relay of DHCP traffic across IP domains |
User Datagram Protocol (UDP) relay |
Relay of broadcast information across
Layer 3 domains for application discovery or relaying of BootP/DHCP
packets |
DHCP Server |
Switch functions as an IPv4 DHCP Server
serving IP addresses for multiple DHCP pools/scopes
Support for DHCP options |
Security |
Secure Shell (SSH) Protocol |
SSH is a secure replacement for Telnet
traffic. SCP also uses SSH. SSH v1 and v2 are supported |
Secure Sockets Layer (SSL) |
SSL support: Encrypts all HTTPS traffic,
allowing highly secure access to the browser-based management GUI in the
switch |
IEEE 802.1X (Authenticator role) |
802.1X: RADIUS authentication and
accounting, MD5 hash; guest VLAN; unauthenticated VLAN, single/multiple
host mode and single/multiple sessions
Supports time-based 802.1X Dynamic VLAN assignment |
Web Based Authentication |
Web based authentication provides network
admission control through web browser to any host devices and operating
systems. |
STP Bridge Protocol Data Unit (BPDU) Guard |
A security mechanism to protect the
network from invalid configurations. A port enabled for BPDU Guard is
shut down if a BPDU message is received on that port. |
STP Root Guard |
This prevents edge devices not in the
network administrator’s control from becoming Spanning Tree Protocol
root nodes. |
DHCP snooping |
Filters out DHCP messages with
unregistered IP addresses and/or from unexpected or untrusted
interfaces. This prevents rogue devices from behaving as a DHCP Server. |
IP Source Guard (IPSG) |
When IP Source Guard is enabled at a port,
the switch filters out IP packets received from the port if the source
IP addresses of the packets have not been statically configured or
dynamically learned from DHCP snooping. This prevents IP Address
Spoofing. |
Dynamic ARP Inspection (DAI) |
The switch discards ARP packets from a
port if there is no static or dynamic IP/MAC bindings or if there is a
discrepancy between the source or destination address in the ARP packet.
This prevents man-in-the-middle attacks. |
IP/Mac/Port Binding (IPMB) |
The features (DHCP Snooping, IP Source
Guard, and Dynamic ARP Inspection) above work together to prevent DOS
attacks in the network, thereby increasing network availability. |
Secure Core Technology (SCT) |
Ensures that the switch will receive and
process management and protocol traffic no matter how much traffic is
received. |
Secure Sensitive Data (SSD) |
A mechanism to manage sensitive data (such
as passwords, keys, etc) securely on the switch, populating this data to
other devices, and secure autoconfig. Access to view the sensitive data
as plaintext or encrypted is provided according to the user configured
access level and the access method of the user. |
Layer 2 isolation Private VLAN Edge (PVE)
with community VLAN |
PVE (also known as protected ports)
provides Layer 2 isolation between devices in the same VLAN, supports
multiple uplinks. |
Port security |
The ability to lock Source MAC addresses
to ports, and limits the number of learned MAC addresses. |
RADIUS/TACACS+ |
Supports RADIUS and TACACS authentication.
Switch functions as a client. |
Storm control |
Broadcast, multicast, and unknown unicast |
RADIUS accounting |
The RADIUS accounting functions allow data
to be sent at the start and end of services, indicating the amount of
resources (such as time, packets, bytes, and so on) used during the
session. |
DoS prevention |
Denial-of-Service (DOS) attack prevention |
ACLs |
Support for up to 512 rules
Drop or rate limit based on source and destination MAC, VLAN ID or IP
address, protocol, port, differentiated services code point (DSCP)/IP
precedence, TCP/UDP source and destination ports,
802.1p priority, Ethernet type, Internet Control Message Protocol (ICMP)
packets, IGMP packets, TCP flag, Time-based ACLs supported. |
Quality of Service |
Priority levels |
4 hardware queues |
Scheduling |
Strict priority and weighted round-robin
(WRR)
Queue assignment based on DSCP and class of service (802.1p/CoS) |
Class of service |
Port based; 802.1p VLAN priority based;
IPv4/v6 IP precedence/type of service (ToS)/DSCP based; Differentiated
Services (DiffServ); classification and re-marking ACLs, trusted QoS. |
Rate limiting |
Ingress policer; egress shaping and rate
control; per VLAN, per port, and flow based. |
Congestion avoidance |
A TCP congestion avoidance algorithm is
required to minimize and prevent global TCP loss synchronization. |
Standards |
Standards |
IEEE 802.3 10BASE-T Ethernet, IEEE 802.3u
100BASE-TX Fast Ethernet, IEEE 802.3ab 1000BASE-T Gigabit Ethernet, IEEE
802.3ad LACP, IEEE 802.3z Gigabit Ethernet, IEEE 802.3x Flow Control,
IEEE 802.1D (STP, GARP, and GVRP),IEEE 802.1Q/p VLAN, IEEE 802.1w RSTP,
IEEE 802.1s Multiple STP, IEEE 802.1X Port Access Authentication, IEEE
802.3af, IEEE 802.3at, RFC 768, RFC 783, RFC 791, RFC 792, RFC 793, RFC
813, RFC 879, RFC 896, RFC 826, RFC 854, RFC 855, RFC 856, RFC 858, RFC
894, RFC 919, RFC 922, RFC 920, RFC 950, RFC 1042, RFC 1071, RFC 1123,
RFC 1141, RFC 1155, RFC 1157, RFC 1350, RFC 1533, RFC 1541, RFC 1624,
RFC 1700, RFC 1867, RFC 2030, RFC 2616, RFC 2131, RFC 2132, RFC 3164,
RFC 3411, RFC 3412, RFC 3413, RFC 3414, RFC 3415, RFC 2576, RFC 4330,
RFC 1213, RFC 1215, RFC 1286, RFC 1442, RFC 1451, RFC 1493, RFC 1573,
RFC 1643, RFC 1757, RFC 1907, RFC 2011, RFC 2012, RFC 2013, RFC 2233,
RFC 2618, RFC 2665, RFC 2666, RFC 2674, RFC 2737, RFC 2819, RFC 2863,
RFC 1157, RFC 1493, RFC 1215, RFC 3416 |
IPv6 |
IPv6 |
IPv6 host mode
IPv6 over Ethernet Dual IPv6/IPv4 stack
IPv6 neighbor and router discovery (ND) IPv6 stateless address
auto-configuration
Path maximum transmission unit (MTU) discovery
Duplicate address detection (DAD) ICMP version 6
IPv6 over IPv4 network with Intra-Site Automatic Tunnel Addressing
Protocol (ISATAP) support
USGv6 and IPv6 Gold Logo certified |
IPv6 QoS |
Prioritize IPv6 packets in hardware |
IPv6 ACL |
Drop or rate limit IPv6 packets in
hardware |
IPv6 First Hop Security |
RA guard
ND inspection
DHCPv6 guard
Neighbor binding table (Snooping and static entries)
Neighbor binding integrity check |
Multicast Listener Discovery (MLD v1/2)
snooping |
Deliver IPv6 multicast packets only to the
required receivers |
IPv6 applications |
Web/SSL, Telnet server/SSH, ping,
traceroute, Simple Network Time Protocol (SNTP), Trivial File Transfer
Protocol (TFTP), SNMP, RADIUS, syslog, DNS client, Telnet Client, DHCP
Client, DHCP Autoconfig, IPv6 DHCP Relay, TACACS |
IPv6 RFCs supported |
RFC 4443 (which obsoletes RFC2463) – ICMP
version 6
RFC 4291 (which obsoletes RFC 3513) – IPv6 address architecture
RFC 4291 – IPv6 addressing architecture
RFC 2460 – IPv6 specification
RFC 4861 (which obsoletes RFC 2461) – Neighbor discovery for IPv6
RFC 4862 (which obsoletes RFC 2462) – IPv6 stateless address
auto-configuration
RFC 1981 – Path MTU discovery
RFC 4007 – IPv6 scoped address architecture
RFC 3484 – Default address selection mechanism
RFC 5214 (which obsoletes RFC 4214) – ISATAP tunneling RFC 4293 – MIB
IPv6: Textual conventions and general group RFC 3595 – Textual
conventions for IPv6 flow label |
Management |
Web user interface |
Built-in switch configuration utility for
easy browser-based device configuration (HTTP/HTTPS). Supports
configuration, system dashboard, system maintenance, and monitoring. |
SNMP |
SNMP versions 1, 2c, and 3 with support
for traps, and SNMP version 3 user-based security model (USM) |
Remote Monitoring (RMON) |
Embedded RMON software agent supports 4
RMON groups (history, statistics, alarms, and events) for enhanced
traffic management, monitoring, and analysis |
IPv4 and IPv6 dual stack |
Coexistence of both protocol stacks to
ease migration |
Firmware upgrade |
● Web browser upgrade (HTTP/HTTPS) and
TFTP and upgrade over SCP running over SSH
● Upgrade can be initiated through console port as well
● Dual images for resilient firmware upgrades |
Port mirroring |
Traffic on a port can be mirrored to
another port for analysis with a network analyzer or RMON probe. Up to 8
source ports can be mirrored to one destination port. A single session
is supported. |
VLAN mirroring |
Traffic from a VLAN can be mirrored to a
port for analysis with a network analyzer or RMON probe. Up to 8 source
VLANs can be mirrored to one destination port. A single session is
supported. |
DHCP (Options 12, 66, 67, 82, 129, and
150) |
DHCP Options facilitate tighter control
from a central point (DHCP server) to obtain IP address,
auto-configuration (with configuration file download), DHCP relay, and
hostname. |
Secure Copy (SCP) |
Securely transfer files to and from the
switch |
Autoconfiguration with Secure Copy (SCP)
file download |
Enables secure mass deployment with
protection of sensitive data |
Text-editable config files |
Config files can be edited with a text
editor and downloaded to another switch, facilitating easier mass
deployment |
Smartports |
Simplified configuration of QoS and
security capabilities |
Auto Smartports |
Applies the intelligence delivered through
the Smartport roles and applies it automatically to the port based on
the devices discovered over CDP or LLDP-MED. This facilitates zero touch
deployments. |
Textview CLI |
Scriptable command-line interface. A full
CLI as well as a menu-based CLI is supported. User privilege levels 1,
7, and 15 is supported for the CLI. |
Cloud services |
Support for Cisco Small Business FindIT
Network and Cisco OnPlus |
Localization |
Localization of GUI and documentation into
multiple languages |
Other management |
Traceroute; single IP management;
HTTP/HTTPS; SSH; RADIUS; port mirroring; TFTP upgrade; DHCP client;
BOOTP; SNTP; Xmodem upgrade; cable diagnostics; ping; syslog; Telnet
client (SSH secure support) |
Time-based port operation |
Link up or down based on user-defined
schedule (when the port is administratively up) |
Login banner |
Configurable multiple banners for web as
well as CLI |
Power Efficiency |
EEE Compliant (802.3az) |
Supports 802.3az on all copper ports
(SG300 models) |
Energy Detect |
Automatically turns off power off on
Gigabit Ethernet and 10/100 RJ-45 port when detecting link down
Active mode is resumed without loss of any packets when the switch
detects the link up |
Cable length detection |
Adjusts the signal strength based on the
cable length for Gigabit Ethernet models. Reduces the power consumption
for cables shorter than 10m. |
Disable port LEDs |
LEDs can be manually turned off to save on
Energy |
General |
Jumbo frames |
Frame sizes up to 9K (9216) bytes
supported on 10/100 and Gigabit interfaces |
MAC table |
Up to 16K (16384) MAC addresses |
Discovery |
Bonjour |
The switch advertises itself using the
Bonjour protocol. |
Link Layer Discovery Protocol (LLDP)
(802.1ab) with LLDP-MED extensions |
LLDP allows the switch to advertise its
identification, configuration, and capabilities to neighboring devices
that store the data in a MIB. LLDP-MED is an enhancement to LLDP that
adds the extensions needed for IP phones. |
Cisco Discovery Protocol (CDP) |
The switch advertises itself using the
Cisco Discovery Protocol. It also learns the connected device and its
characteristics via CDP. |
Power over Ethernet (PoE) |
802.3af PoE and 802.3at PoE+ delivered
over any of the RJ-45 ports within the listed power budgets |
180W (PoE+ supported)
24 Ports That Support PoE |
Power consumption (worst case) |
Energy Detect power Savings
110V=31.9W / 220V=33.0W Systm Power Consumption
110V=222W / 220V=217W Power Consumption: Case (with PoE)
740.43 BTU/hr Heat Dissipation Worst Case |
Ports |
● 26 10/100/1000 ports (24 PoE+
ports with 180W power budget)
● 2 combo mini-GBIC ports |
Buttons |
Reset button |
Cabling type |
Unshielded twisted pair (UTP) Category 5
or better for 10BASE-T/100BASE-TX; UTP Category 5
Ethernet or better for 1000BASE-T |
LEDs |
System, Link/Act, PoE, Speed, LED power
saving option |
Flash |
16 MB |
CPU memory |
128 MB |
Packet buffer |
8 MB |
Environmental |
Dimensions (W x H x D) |
17.3 x 1.45 x 10.1 in. (440 x 44.45 x 257
mm) |
Unit weight |
8.71 lb (3.95 kg) |
Power |
100-240V 47-63 Hz, internal, universal
|
Certification |
UL (UL 60950), CSA (CSA 22.2), CE mark,
FCC Part 15 (CFR 47) Class A |
Operating temperature |
32°to 113°F (0°to 45°C) |
Storage temperature |
-4°to 158°F (-20°to 70°C) |
Operating humidity |
10% to 90%, relative, noncondensing |
Storage humidity |
10% to 90%, relative, noncondensing |
Acoustic Noise and MTBF |
2 pcs FAN
40.4 dB Acoustic Noise
310,755 (at 45°C) MTBF @40°C (hr) |