Техническая Спецификация для HP E2520-24G-PoE J9299A

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Features and benefits

Quality of Service (QoS)

• Selectable queue configuration: increases

performance and/or traffic reliability by selecting
the number of queues that best meet the
requirements of your network applications; switch
will map 8 priorities to either 2 or 4 queues

• Simplified QoS configuration:

– Port-based: prioritize traffic by specifying a port

and priority level

– VLAN based: prioritize traffic by specifying a

VLAN and priority level

• IEEE 802.1p traffic prioritization: honors and

sets IEEE 802.1p priority in the VLAN tag

• Type of service:

– IP Precedence: honors IP Precedence bits and

allows mapping to a priority queue

– Differentiated Services Code Point values:

honors Differentiated Services Code Point (DSCP)
bits and allows mapping to a priority queue

• Flow control: helps ensure reliable

communications during full-duplex operation

Management

• Choice of management interfaces:

– Web graphical user interface (GUI):

easy-to-use graphical interface allows
configuration of the switch from any Web browser

– Command-line interface (CLI): robust

command-line interface provides advanced
configuration and diagnostics

– Simple Network Management Protocol

(SNMPv2c/SNMPv3): allows switch to be
managed with a variety of third-party network
management applications

• Integration with HP PCM: enables discovery,

mapping, logging, and configuration via HP PCM,
which is available as a free download from the
Web

• Virtual stacking: single IP address manages up

to 16 switches

• Port mirroring: allows traffic to be mirrored on

any port or a network analyzer to assist with
diagnostics or detecting network attacks

• Multiple configuration files: configuration file

management tools allow up to three configuration
files to be managed and stored on the switch

• Dual flash images: provide independent primary

and secondary operating system files for backup
while upgrading

• Network tools: command-line interface includes

telnet client, ping, traceroute, and Layer 2 link test
tools for diagnostics

• IEEE 802.1AB Link Layer Discovery Protocol

(LLDP): automated device discovery protocol for
easy mapping by network management applications

• Command authorization: leverages RADIUS to

link a custom list of CLI commands to individual
network administrator's login; also provides an audit
trail

• Logging: local and remote logging of events via

SNMP (v2c and v3) and syslog

• IPv6 host: allows switches to be managed using

IPv6 protocols

• RMON: provides advanced monitoring and

reporting capabilities for statistics, history, alarms,
and events

• Find-Fix-Inform: finds and fixes common network

problems automatically, then informs administrator

• Front-panel LEDs:

– Locator LED: allows users to set the locator LED

on a specific switch to either turn on, blink, or turn
off; simplifies troubleshooting by making it easy to
locate a particular switch within a rack of similar
switches

– Per-port LEDs: provides an at-a-glance view of

status, activity, speed, and full-duplex operation

– Power and fault LEDs: display any issues

Connectivity

• Auto-MDIX: automatically adjusts for

straight-through or crossover cables on all ports

• Small Form-Factor Pluggable (SFP) slots:

dual-personality ports allow for either copper or
fiber connectivity such as Gigabit-SX, -LX, -LH, and
-BX or 100-FX and -BX

• IEEE 802.3af Power over Ethernet: provides

up to 15.4 W per port to IEEE 802.3af-compliant
PoE-powered devices such as IP phones, wireless
access points, and security cameras (see product
specifications for total PoE power available);
supports some prestandard PoE devices (see product
FAQs for more details)

• RJ-45 serial console port: front of unit location

provides easy access to switch CLI