Używany. Sprawny.
Product Overview
The Cisco® SGE2000P 24-Port Gigabit Switch (Figure 1) helps maximize system availability, with fully redundant stacking and dual images for resilient firmware upgrades. The switch helps secure the network through IEEE 802.1Q VLANs, IEEE 802.1X port authentication, access control lists (ACL), denial-of-service (DoS) prevention, and MAC-based filtering. The enhanced quality of service (QoS) and traffic-management features help ensure clear and reliable IP voice and video communications.
For wireless or voice over IP (VoIP) deployments, the Cisco SGE2000P supports the IEEE802.3af standard for Power over Ethernet (PoE). Automatic load sensing in the power control circuitry automatically detects PoE on the end device before providing power. For safety, each port has independent overload and short-circuit protection, along with LED indicators for power status. A maximum of 15.4W is available on the Fast Ethernet ports for powering PoE-enabled wireless access points or VoIP handsets, with a maximum per-device PoE delivery of 185W available for all ports.
The Cisco SGE2000P provides an intuitive, secure management interface, enabling network administrators to better utilize its comprehensive management feature set, for a better-optimized and more secure network.
Features
● Twenty-four 10/100/1000 Ethernet ports
● Four Small Form-Factor Pluggable (SFP) slots (shared with four copper ports) for fiber Gigabit Ethernet expansion
● IEEE 802.3af PoE delivered over any of the twenty-four 10/100/1000 copper ports
● Up to 15.4W available on the copper ports for powering PoE-enabled wireless access points or VoIP handsets, with a maximum per-device PoE delivery of 185W available for all ports
● Dual images for resilient firmware upgrades
● 48-Gbps, nonblocking, store-and-forward switching capacity
● Simplified QoS management using 802.1p, Differentiated Services (DiffServ), or type of service (ToS) traffic prioritization specifications
● Fully resilient stacking for optimized growth with simplified management
● ACLs for granular security and QoS implementation
● Can be configured and monitored from a standard web browser
● Secure remote management of the switch via Secure Shell (SSH) and SSL encryption
● 802.1Q-based VLANs enable segmentation of networks for improved performance and security
● Private VLAN Edge (PVE) for simplified network isolation of guest connections or autonomous networks
● Automatic configuration of VLANs across multiple switches through Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP)
● User/network port-level security via 802.1X authentication and MAC-based filtering
● Increased bandwidth and added link redundancy with Link Aggregation Control Protocol (LACP)
● Enhanced rate-limiting capabilities, including back pressure and multicast and broadcast flood control
● Port mirroring for noninvasive monitoring of switch traffic
● Jumbo frame support up to 10KB
● Simple Network Management Protocol (SNMP) versions 1, 2c, and 3 and Remote Monitoring (RMON) support
● Fully rack mountable using the included rack-mounting hardware
Specifications
Table 1 contains the specifications, package contents, and minimum requirements for the Cisco SGE2000P 24-Port Gigabit Switch.
Table 1. Specifications for the Cisco SGE2000P 24-Port Gigabit Switch: PoE
Feature
Description
Ports
Buttons
Reset button
Cabling type
LEDs
PWR, Fan, Link/Act, PoE, Speed, RPS, Master, Stack ID 1 through 8
PoE
IEEE 802.3af PoE delivered over any of the twenty-four 10/100/1000 ports; power budget allows for max power of 15.4W on up to 12 ports simultaneously.
Performance
Switching capacity
Up to 48 Gbps, nonblocking
Forwarding rate(based on 64-byte packets)
Up to 35.7 mpps
Stacking
Stack operation
Layer 2
MAC table size
8000
Number of VLANs
256 active VLANs (4096 range)
VLAN
Head-of-line (HOL) blocking
HOL blocking prevention
Layer 3
Layer 3 options
IPv6
IPv6 Host Mode
IPv6 over Ethernet
Dual IPv6/IPv4 stack
IPv6 Neighbor and Router Discovery (ND)
IPv6 Stateless Address Autoconfiguration
Path MTU Discovery
Duplicate Address Detection (DAD)
ICMPv6
IPv6 over IPv4 network with ISATAP tunnel support
IPv6 QoS
Prioritize IPv6 packets in hardware
IPv6 ACL
Drop or Rate Limit IPv6 packets in hardware
MLD Snooping
Deliver IPv6 multicast packets only to the required receivers
IPv6 Applications
Web/SSL, Telnet Server/SSH, Ping, Traceroute, SNTP, TFTP, Radius, Syslog, DNS Client
IPv6 RFCs Supported
RFC2463 – ICMPv6
RFC3513 – IPv6 Address architecture
RFC 4291 – IP Version 6 Addressing Architecture
RFC 2460 – Internet Protocol v6 (IPv6) Specification
RFC 2461 – Neighbor Discovery for IPv6
RFC 2462 – IPv6 Stateless Address Auto-configuration
RFC 1981 – Path MTU Discovery
RFC 4007 – IPv6 Scoped Address Architecture
RFC3484 – Default address selection mechanism is described by RFC3484
RFC4214 – ISATAP tunneling
RFC4293 – MIB IPv6: Textual Conventions and General Group
RFC 3595 – Textual Conventions for IPv6 Flow Label
Management
Web user interface
Built-in web user interface for easy browser-based configuration (HTTP/HTTPS)
SNMP
SNMP versions 1, 2c, and 3 with support for traps
SNMP MIBs
RFC1213 MIB-2, RFC2863 interface MIB, RFC2665 Ether-like MIB, RFC1493 bridge MIB, RFC2674 extended bridge MIB (P-bridge, Q-bridge), RFC2819 RMON MIB (groups 1, 2, 3, and 9 only), RFC2737 entity MIB, RFC3621 Power Ethernet MIB, RFC 2618 RADIUS client MIB, RFC1215 traps
RMON
Embedded RMON software agent supports 4 RMON groups (history, statistics, alarms, and events) for enhanced traffic management, monitoring, and analysis.
Firmware upgrade
Port mirroring
Traffic on a port can be mirrored to another port for analysis with a network analyzer or RMON probe
Other management
Security
IEEE 802.1X
Access control
ACLs – drop or rate limit based on:
Availability
Link aggregation
Storm control
Broadcast and multicast storm protection
DoS prevention
DoS attack prevention
Spanning Tree
IGMP snooping
IGMP (versions 1 and 2) snooping limits bandwidth-intensive video traffic to only the requestors. Supports 256 multicast groups.
QoS
Priority levels
4 hardware queues
Scheduling
Priority queuing and weighted round-robin (WRR)
Class of service
Rate limiting
Standards
802.3 10BASE-T Ethernet, 802.3u 100BASE-TX Fast Ethernet, 802.3ab 1000BASE-T Gigabit Ethernet, 802.3z Gigabit Ethernet, 802.3x flow control, 802.3ad LACP, 802.3af POE, 802.1d Spanning Tree Protocol (STP), 802.1Q/p VLAN, 802.1w Rapid STP, 802.1s Multiple STP, 802.1X port access authentication
Environmental
DimensionsW x D x H
17.32 x 14.70 x 1.73 in.(440 x 375 x 44 mm)
Unit weight
15.85 lb (7.19 kg)
Certification
UL (UL 60950), CSA (CSA 22.2), CE Mark, FCC Part 15 (CFR 47) Class A
Operating temperature
32º to 104ºF (0º to 40ºC)
Storage temperature
–4º to 158ºF (–20º to 70ºC)
Operating humidity
10% to 90% relative humidity, noncondensing
Storage humidity
10% to 95% relative humidity, noncondensing
Number of fans
5
Acoustic noise
55 dB Max.
Power
100–240V AC, 50–60 Hz, internal, universal; also equipped with redundant power supply connector for external power supply, 48V DC
Power consumption
