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Цена:
190.00 $ 12 629,78 P
Артикул: WS-C3550-48
Коммутатор, L3, 48 портов 10/100BASE-T, 2 порта 1000BASE-X (GBIC)
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Feature

Benefit

AVAILABILITY/SCALABILITY

High-Performance IP Routing

• Cisco Express Forwarding (CEF)-based routing architecture performed in hardware to deliver extremely high-performance IP routing.

• Support for basic IP unicast routing protocols (static, RIPv1, RIPv2) for small network routing applications.

• Support for advanced IP unicast routing protocols (OSPF, IGRP, EIGRP, BGPv4) for load balancing and constructing scalable LANs - requires EMI.

• Inter-VLAN IP routing for full Layer 3 routing between two or more VLANs.

• Equal cost routing for load balancing and redundancy.

• Protocol-Independent Multicast (PIM) for IP multicast routing within a network that enables the network to receive the multicast feed requested and for switches not participating in the multicast to be pruned support for PIM sparse mode (PIM-SM), PIM dense mode (PIM-DM), and PIM sparse-dense mode - requires EMI.

• Distance Vector Multicast Routing Protocol (DVMRP) tunneling for interconnecting two multicast-enabled networks across non-multicast networks-requires EMI.

• Fallback bridging for forwarding of non-IP traffic between two or more VLANs.

• Cisco Hot Standby Router Protocol (HSRP) to create redundant fail-safe routing topologies.

Superior Redundancy for Fault Backup

• Cisco UplinkFast/BackboneFast technologies ensure quick fail-over recovery enhancing overall network stability and reliability. CrossStack UplinkFast (CSUF) technology provides increased redundancy and network resiliency through fast spanning-tree convergence (less than two seconds) across a stack of switches using GigaStack GBICs in an independent stack backplane cascaded configuration.

• IEEE 802.1w Rapid Spanning Tree Protocol (RSTP) provides rapid convergence of the spanning tree independent of spanning-tree timers.

• Supports Cisco HSRP to create redundant fail-safe routing topologies.

• Redundant stacking connections provide support for a redundant loopback connection for top and bottom switches in an independent stack backplane cascaded configuration.

• Command switch redundancy enabled in the CMS Software allows customers to designate a backup command switch that takes over cluster management functions if the primary command switch fails.

• Provides unidirectional link detection (UDLD) and Aggressive UDLD for detecting and disabling unidirectional links on fiber-optic interfaces caused by incorrect fiber-optic wiring or port faults.

• Switch port Auto-recovery (or "errDisable") automatically attempts to re-enable a link that becomes disabled due to a network error.

• Support for Cisco's optional Redundant Power System 300 (RPS 300 supports all Catalyst 3550 Switches except the Catalyst 3550-24 PWR) and/or the Redundant Power System 675 (RPS 675 supports all Catalyst 3550 Switches) that provides superior internal power source redundancy for up to six Cisco networking devices resulting in improved fault tolerance and network uptime.

Integrated Cisco IOS Features for Bandwidth Optimization

• Bandwidth aggregation of up to 16 Gbps through Gigabit EtherChannel technology and up to 1.6 Gbps through Fast EtherChannel technology enhances fault tolerance and offers higher speed aggregated bandwidth between switches, to routers and individual servers. Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall systems performance.

• WCCP allows the interaction with a web cache for the purpose of redirecting content requests to a cache and performing basic load balancing across multiple caches-requires EMI.

• IEEE 802.1D Spanning-Tree Protocol support for redundant backbone connections and loop-free networks simplifies network configuration and improves fault tolerance.

• PVST+ allows for Layer 2 load sharing on redundant links to efficiently utilize the extra capacity inherent in a redundant design.

• IEEE 802.1s Multiple Spanning Tree Protocol (MSTP) allows a spanning tree instance per VLAN enabling Layer 2 load sharing on redundant links.

• Equal cost routing for Layer 3 load balancing and redundancy

• Local Proxy ARP works in conjunction with private VLAN edge to minimize broadcasts and maximize available bandwidth.

• VLAN Trunking Protocol (VTP) pruning limits bandwidth consumption on VTP trunks by flooding broadcast traffic only on trunk links required to reach the destination devices.

• IGMP snooping provides for fast client joins and leaves of multicast streams and limits bandwidth-intensive video traffic to only the requestors.

• Multicast VLAN Registration (MVR) continuously sends multicast streams in a multicast VLAN while isolating the streams from subscriber VLANs for bandwidth and security reasons.

Ultra-Flexible and Scalable Stacking

• The Cisco GigaStack GBIC delivers a hardware-based, independent stacking bus with up to 2 Gbps forwarding rate in a point-to-point configuration, or 1 Gbps forwarding bandwidth when daisy chained with up to nine switches.

Ease of Use and Ease of Deployment

• Auto-configuration eases deployment of switches in the network by automatically configuring multiple switches across a network via a boot server. Automatic QoS (Auto QoS) greatly simplifies the configuration of QoS in VoIP networks by issuing interface and global switch commands that allow the detection of Cisco IP phones, the classification of traffic, and egress queue configuration.

• Auto-sensing on each non-GBIC port detects the speed of the attached device and automatically configures the port for 10-, 100-, or 1000-Mbps operation, easing the deployment of the switch in mixed 10, 100, and 1000BASE-T environments.

• Auto-negotiating on all ports automatically selects half-or full-duplex transmission mode to optimize bandwidth.

• Dynamic Trunking Protocol (DTP) enables dynamic trunk configuration across all ports in the switch.

• Port Aggregation Protocol (PAgP) automates the creation of Cisco Fast EtherChannel or Gigabit EtherChannel groups, enabling linking to another switch, router, or server.

• Link Aggregation Control Protocol (LACP) allows the creation of Ethernet channeling with devices that conform to IEEE 802.3ad. This is similar to Cisco's EtherChannel and PAgP.

• DHCP relay allows a broadcast DHCP request to be forwarded to the network DHCP server.

• IEEE 802.3z-compliant 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, and 1000BASE-T physical interface support through a field-replaceable GBIC module provides customers unprecedented flexibility in switch deployment.

• The default configuration stored in Flash ensures that the switch can be quickly connected to the network and can pass traffic with minimal user intervention.

SECURITY

Security

• Bridge protocol data unit (BPDU) guard shuts down Spanning-Tree Protocol PortFast-enabled interfaces when BPDUs are received to avoid accidental topology loops.

• Spanning-tree root guard (STRG) prevents edge devices not in the network administrator's control from becoming Spanning-Tree Protocol root nodes.

• IGMP Filtering provides multicast authentication by filtering out non-subscribers and limits the number of concurrent multicast streams available per port.

• Private VLAN edge provides security and isolation between ports on a switch, ensuring that users cannot snoop on other users' traffic.

• Trusted Boundary provides the ability to trust the QoS priority settings if an IP phone is present and disable the trust setting in the event that the IP phone is removed, thereby preventing a malicious user from overriding prioritization policies in the network.

• Switch Port Analyzer (SPAN) for Cisco Secure Intrusion Detection System (IDS) support allows the IDS to take action when an intruder is detected.

• The user-selectable address-learning mode simplifies configuration and enhances security.

• Cisco CMS Software Security Wizards ease the deployment of security features for restricting user access to a server, a portion of the network or access to the network.

Network Administration Security

• TACACS+ and RADIUS authentication to enable centralized control of the switch and restrict unauthorized users from altering the configuration. Multilevel security on console access prevents unauthorized users from altering the switch configuration.

• SSH, Kerberos, and SNMPv3 provides network security by encrypting administrator traffic during Telnet and SNMP sessions-SSH, Kerberos, and the crypto version of SNMPv3 require a special crypto software image due to US export restrictions.

User and Device Authentication

• IEEE 802.1x for dynamic port-based security to prevent unauthorized clients from gaining access to the network.

• Port Security secures the access to a port based on the MAC address of a users device. The aging feature removes the MAC address from the switch after a specific timeframe to allow another device to connect to the same port, thereby eliminating administrative overhead associated with this feature.

Granular Access Control and Identity-based Network Services

• Cisco security VLAN ACLs (VACLs) on all VLANs to prevent unauthorized data flows to be bridged within VLANs.

• Cisco standard and extended IP security Router ACLs (RACLs) for defining security policies on routed interfaces for control plane and data plane traffic.

• Port-based ACLs (PACLs) for Layer 2 interfaces allows security policies to be applied on individual switch ports.

• Time-based ACLs allow the implementation of security settings during specific periods of the day or days of the week.

• 802.1x with VLAN assignment allows a dynamic VLAN assignment for a specific user regardless of where the user is connected.

• 802.1x with an ACL assignment allows for specific security policies based on a user regardless of where the user is connected.

• 802.1x with voice VLAN to permit an IP phone access to the voice VLAN irrespective of the authorized or unauthorized state of the port.

• 802.1x and port security for authenticating the port and managing network access for all MAC addresses, including that of the client.

• Support for dynamic VLAN assignment through implementation of VLAN Membership Policy Server (VMPS) client functionality provides flexibility in assigning ports to VLANs. Dynamic VLAN enables fast assignment of IP address.

Tracking Users

• DHCP Interface Tracker (Option 82) provides capabilities to locate a user on a network by providing switch and port ID to a DHCP server. MAC Address Notification allows administrators to be notified of new users added or removed from the network. Support for CiscoWorks User Registration Tool and the User Tracker in CiscoWorks Campus Manager both provide the ability to track the location of users.

QUALITY OF SERVICE/CONTROL

Advanced Quality of Service

• 802.1p CoS and Differentiated Services Code Point (DSCP) field classification via marking and reclassification on a per packet basis using source/destination IP address, source/destination MAC address, or Layer 4 TCP/UDP port number.

• Automatic QoS (Auto-QoS) greatly simplifies the configuration of QoS in VoIP networks by issuing interface and global switch commands that allow the detection of Cisco IP phones, the classification of traffic, and egress queue configuration.

• Cisco control plane and data plane quality of service ACLs on all ports to ensure proper marking on a per packet basis.

• Four egress queues per port supported in hardware to enable differentiated management of up to four types of traffic.

• WRR scheduling to ensure differential prioritization of packet flows by intelligently servicing the egress queues.

• WRED on all Gigabit Ethernet ports for avoidance of congestion at the egress queues before a disruption occurs.

• Strict priority queuing to guarantee that the highest priority packets will always get serviced ahead of all other traffic.

• No performance penalty for highly granular quality of service functionality.

Granular Rate-Limiting

• CIR functionality allows bandwidth to be guaranteed in increments as low as 8 Kbps.

• Rate-limiting based on source/destination IP address, source/destination MAC address, or Layer 4 TCP/UDP information or any combination of these fields using QoS ACLs (IP ACLs or MAC ACLs), class maps, and policy maps.

• Per port, per VLAN ingress policing enables the rate-limiting of individual VLANs on trunk ports.

• Ability to easily manage data flows asynchronously upstream and downstream from the end station or on the uplink via ingress and ingress policing.

• 8 aggregate or individual ingress policers and 8 aggregate egress policers on each 10/100 port.

• 128 aggregate or individual ingress policers and 8 aggregate egress policers on each Gigabit Ethernet port.

MANAGEABILITY

Cluster Management Suite

• Built-in Web-based Cisco CMS Software provides an easy- to-use Web-based management interface through a standard Web browser.

• Cisco AVVID Wizards use just a few user inputs to automatically configure the switch to optimally handle different types of traffic: voice, video, multicast, and/or high-priority data.

• A security wizard is provided to restrict unauthorized access to servers and networks, and restrict certain applications on the network.

• Cisco CMS Software allows the user to manage up to 16 inter-connected Cisco Catalyst 3550, 2950, 3500 XL, 2900 XL, 2900 LRE XL, and 1900 switches through a single IP address, without the limitation of being physically located in the same wiring closet. Full backward compatibility ensures any combination of the above switches can be managed with a Cisco Catalyst 3550 switch.

• The cluster software upgrade feature allows the user to automatically upgrade the system software on a group of Cisco Catalyst 3550, 2950, 3500 XL, 2900 XL, 2900 LRE XL, and 1900 switches.

• Cisco Cluster Management Suite Software has been extended to include multilayer feature configurations such as Routing Protocols, ACLs, and QoS parameters.

• Clustering now supports member discovery and cluster creation across a single Catalyst 3550 routed hop, enabling the entire LAN to be managed in a single web interface (and with a single IP address if desired).

• Cisco Cluster Management Suite Guide Mode assists users in the configuration of powerful advanced features by providing step-by-step instructions.

• Cisco Cluster Management Suite provides enhanced online help for context-sensitive assistance.

• Easy-to-use graphical interface provides both a topology map and front panel view of the cluster.

• Multi-device and multi-port configuration capabilities allow network administrators to save time by configuring features across multiple switches and ports simultaneously.

• One-click software upgrades can be performed across the entire cluster simultaneously, and configuration cloning enables rapid deployment of networks.

• Ability to launch the web-based management for a Cisco Aironet Wireless Access Point by simply clicking on its icon in the topology map.

• User-personalized interface allows users to modify polling intervals, table views, and other settings within CMS and retain these settings the next time they use CMS.

• Alarm notification provides automated email notification of network errors and alarm thresholds.

• A troubleshooting toolbox, including L2 and L3 traceroute and Ping, helps administrators find network problems quickly.

CiscoWorks Support

• Manageable through CiscoWorks network management software on a per-port and per-switch basis providing a common management interface for Cisco routers, switches and hubs.

• SNMP v1, v2c, v3 and Telnet interface support delivers comprehensive in-band management, and a CLI-based management console provides detailed out-of-band management.

• Cisco Discovery Protocol (CDP) Versions 1 and 2 enable a CiscoWorks network management station to automatically discover the switch in a network topology.

• Supported by the CiscoWorks LAN Management Solution (includes Resource Manager Essentials, Campus Manager, CiscoView, and Device Fault Manager); QoS Policy Manager (QPM); ACS; User Registration Tool (URT); CiscoWorks SNMS; Service Level Manager; and Internet Performance Monitor (IPM).

• Superior Cisco IOS CLI support provides common user interface and command set with all Cisco Manageability routers and Cisco desktop switches.

• Supported by the Cisco QPM solution for end-to-end QoS policies.

• Cisco VTP supports dynamic VLANs and dynamic trunk configuration across all switches.

Performance

• 24 Gbps switching fabric (Catalyst 3550-12G and 3550-12T), 13.6 Gbps switching fabric (Catalyst 3550-48), 8.8 Gbps switching fabric (Catalyst 3550-24, 3550-24 PWR, 3550-24-DC, and 3550-24-FX)

• 12 Gbps maximum forwarding bandwidth at Layer 2 and Layer 3 (Catalyst 3550-12G 3550-12T), 6.8 Gbps maximum forwarding bandwidth at Layer 2 and Layer 3 (Catalyst 3550-48), 4.4 Gbps maximum forwarding bandwidth at Layer 2 and Layer 3 (Catalyst 3550-24, 3550-24 PWR, 3550-24-DC, and 3550-24-FX)

• 17.0 Mpps forwarding rate for 64-byte packets (Catalyst 3550-12G and 3550-12T), 10.1 Mpps forwarding rate for 64-byte packets (Catalyst 3550-48), 6.6 Mpps forwarding rate for 64-byte packets (Catalyst 3550-24, 3550-24 PWR, 3550-24-DC, and 3550-24-FX)

• 4 MB memory architecture shared by all ports (Catalyst 3550-12G, 3550-12T, and 3550- 48), 2 MB memory architecture shared by all ports (Catalyst 3550-24, 3550-24 PWR, 3550-24-DC, and 3550-24-FX)

• 64 MB DRAM and 16 MB Flash memory

• Configurable up to 12,000 MAC addresses (Catalyst 3550-12G and 3550-12T), Configurable up to 8,000 MAC addresses (Catalyst 3550-48, 3550-24, 3550-24 PWR, 3550-24-DC, and3550-24-FX)

• Configurable up to 24,000 unicast routes (Catalyst 3550-12G and 3550-12T), Configurable up to 16,000 unicast routes (Catalyst 3550-48, 3550-24, 3550-24 PWR, 3550-24-DC, and 3550-24-FX)

• Configurable up to 8,000 multicast routes (Catalyst 3550-12G and 3550-12T), Configurable up to 2,000 multicast routes (Catalyst 3550-48, 3550-24, 3550-24 PWR, 3550-24-DC, and 3550-24-FX)

• Configurable Maximum Transmission Unit (MTU) of up to 2,000 Bytes for bridging of MPLS tagged frames (Catalyst 3550-12G and 3550-12T), Configurable Maximum Transmission Unit (MTU) of up to 1,546 Bytes for bridging of MPLS tagged frames (Catalyst 3550-48, 3550-24, 3550-24 PWR, 3550-24-DC, and 3550-24-FX)

Management

• BRIDGE-MIB

• CISCO-BULK-FILE-MIB

• CISCO-CDP-MIB

• CISCO-CLUSTER-MIB

• CISCO-CONFIG-COPY-MIB

• CISCO-CONFIG-MAN-MIB

• CISCO-ENVMON-MIB

• CISCO-FLASH-MIB

• CISCO-FTP-CLIENT-MIB

• CISCO-HSRP-EXT-MIB

• CISCO-HSRP-MIB

• CISCO-IGMP-FILTER-MIB

• CISCO-IMAGE-MIB

• CISCO-IPMROUTE-MIB

• CISCO-MAC-NOTIFICATION-MIB

• CISCO-MEMORY-POOL-MIB

• CISCO-PAGP-MIB

• CISCO-PORT-QOS-MIB

• CISCO-PROCESS-MIB

• CISCO-RTTMON-MIB

• CISCO-STACKMAKER-MIB

• CISCO-STACK-MIB

• CISCO-STP-EXTENSIONS-MIB

• CISCO-SYSLOG-MIB

• CISCO-TCP-MIB

• CISCO-VLAN-IFTABLE-RELATIONSHIP-MIB

• CISCO-VLAN-MEMBERSHIP-MIB

• CISCO-VTP-MIB

• ENTITY-MIB

• IF-MIB

• IGMP-MIB

• IPMROUTE-MIBL2/L3 INTERFACE MIB

• OLD-CISCO-CHASSIS-MIB

• OLD-CISCO-SYSTEM-MIB

• OLD-CISCO-TS-MIB

• OSPF-MIB (RFC 1253)

• PIM-MIB

• RFC1213-MIB

• RMON2-MIB

• SNMPv2-MIB

• TCP-MIB

• UDP-MIB

Standards

• IEEE 802.1x

• IEEE 802.1w

• IEEE 802.1s

• IEEE 802.3x full duplex on 10BASE-T, 100BASE-TX, and 1000BASE-T ports

• IEEE 802.1D Spanning-Tree Protocol

• IEEE 802.1p CoS Prioritization

• IEEE 802.1Q VLAN

• IEEE 802.3ad

• IEEE 802.3 10BASE-T specification

• IEEE 802.3u 100BASE-TX specification

• IEEE 802.3ab 1000BASE-T specification

• IEEE 802.3z 1000BASE-X specification

• 1000BASE-X (GBIC)

• 1000BASE-SX

• 1000BASE-LX/LH

• 1000BASE-ZX

• 1000BASE-CWDM GBIC 1470nm

• 1000BASE-CWDM GBIC 1490nm

• 1000BASE-CWDM GBIC 1510nm

• 1000BASE-CWDM GBIC 1530nm

• 1000BASE-CWDM GBIC 1550nm

• 1000BASE-CWDM GBIC 1570nm

• 1000BASE-CWDM GBIC 1590nm

• 1000BASE-CWDM GBIC 1610nm

• RMON I and II standards

• SNMPv1, SNMPv2c, SNMPv3

Y2K

• Y2K compliant

Connectors and Cabling

• 10BASE-T ports: RJ-45 connectors; two-pair Category 3, 4, or 5 unshielded twisted-pair (UTP) cabling

• 100BASE-TX ports: RJ-45 connectors; two-pair Category 5 UTP cabling

• 1000BASE-T ports: RJ-45; two-pair Category 5 UTP cabling

• 1000BASE-T GBIC-based ports: RJ-45 connectors; two-pair Category 5 UTP cabling

• 1000BASE-SX, -LX/LH, -ZX, and CWDM GBIC-based ports: SC fiber connectors, single-mode or multimode fiber

• Cisco GigaStack GBIC ports: copper-based Cisco GigaStack cabling

• Management console port: 8-pin RJ-45 connector, RJ-45-to-RJ-45 rollover cable with RJ-45-to-DB9 adapter for PC connections; for terminal connections, use RJ-45-to-DB25 female data-terminal-equipment (DTE) adapter (can be ordered separately from Cisco, part number ACS-DSBUASYN=)

Power Connectors

• Customers can provide power to a switch by using either the internal power supply or the Cisco RPS. The RPS 300 is compatible with all Catalyst 3550 models except the 3550-24-DC and 3550-24 PWR. The RPS 675 is compatible with all Catalyst 3550 models except the 3550-24-DC. The connectors are located at the back of the switch

• Internal Power Supply Connector

– The internal power supply is an auto-ranging unit

– The internal power supply supports input voltages between 100 and 240 VAC

– Use the supplied AC power cord to connect the AC power connector to an AC power outlet

• Cisco RPS 675 Connector

– The connector offers connection for an optional Cisco RPS 675 that uses AC input and supplies DC output to the switch

– The connector offers a 675-watt redundant power system that can support six external network devices and provides power to one failed device at a time

– The connector automatically senses when the internal power supply of a connected device fails and provides power to the failed device, preventing loss of network traffic

– Attach only the Cisco RPS 675 (model PWR675-AC-RPS-NI=) to the redundant power supply receptacle with this connector. See above for Catalyst 3550 RPS compatibility

• Cisco RPS 300 Connector

– The connector offers connection for an optional Cisco RPS 300 that uses AC input and supplies DC output to the switch

– The connector offers a 300-watt redundant power system that can support six external network devices and provides power to one failed device at a time

– The connector automatically senses when the internal power supply of a connected device fails and provides power to the failed device, preventing loss of network traffic

– Attach only the Cisco RPS 300 (model PWR300-AC-RPS-N1) to the redundant power supply receptacle with this connector. See above for Catalyst 3550 RPS compatibility

Indicators

• Per-port status LEDs: link integrity, disabled, activity, speed, and full-duplex indications

• System status LEDs: system, RPS, and bandwidth utilization indications

 

Коммутаторы Cisco Catalyst 3550 - это стекируемые многоуровневые коммутаторы, обеспечивающие высокую доступность, управление качеством обслуживания и высокую безопасность сетей. Благодаря наличию различных конфигураций Fast Ethernet и Gigabit Ethernet, Cisco 3550 являются сильным решением для корпоративных и городских сетей доступа.
 
Коммутаторы Catalyst 3550 позволяют внедрить в масштабе всей сети такие интеллектуальные функции, как расширенное управление качеством обслуживания (QoS), ограничение скорости, списки контроля доступа (ACL), управление мультивещанием и высокопроизводительная IP-маршрутизация, не усложняя традиционную инфраструктуру коммутируемых сетей.
 
Основные особенности:
 
Высокоскоростная маршрутизация трафика: благодаря технологии Cisco Express Forwarding (CEF) серия Catalyst 3550 обеспечивает высокопроизводительную маршрутизацию трафика IP. Программное обеспечение SMI поддерживает статическую, RIPv1 и RIPv2 маршрутизацию, а EMI – еще и OSPF, IGRP, EIGRP, а также маршрутизацию multicast- трафика (PIM, DVMRP, IGMP snooping).
 
Высокая безопасность: поддержка протокола 802.1x, функциональность Identity-Based Networking Services (IBNS), списки доступа для трафика, коммутируемого на втором уровне (VLAN ACL), на третьем и четвертом уровнях (Router ACL), а также Port-based ACLs (PACL). Для обеспечения безопасности при администрировании поддерживаются протоколы SSH и SNMPv3, а также централизованная аутентификация на TACACS+ и RADIUS серверах.
 
Высокая доступность: для защиты от сбоев внутренних блоков питания коммутаторы Catalyst 3550 поддерживают резервные системы питания Cisco Redundant Power System 300 (RPS 300) и 675 (RPS 675), протоколы 802.1D, 802.1s, 802.1w, функциональность UplinkFast, CrossStack UplinkFast (CSUF), HSRP, UDLD, Aggressive UDLD, Switch port Auto-recovery.
 
Поддержка качества обслуживания (QoS): классификация трафика по полям DSCP или 802.1p (CoS), стандартные и расширенные списки доступа для выделения заданного типа трафика, WRED, очередность Strict Priority, Weighted Round Robin. Существует возможность определения максимальной полосы для определенного вида трафика, а также выделения гарантированной полосы CIR.
 
Отличная управляемость: внедренное в коммутатор ПО Cisco CMS, поддержка управления с помощью SNMP-плат- форм, таких как CiscoWorks, поддержка SNMP версий 1, 2, 3, Telnet, RMON, SPAN, RSPAN, NTP, TFTP.
В комплект входит:
 
- коммутатор б.у., тщательно протестированный, гарантия 3 месяца
 
- кабель питания
 
- упаковка
Коммутатор Cisco Catalyst WS-C3550-48-SMI / EMI
Артикул: WS-C3550-48
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Цена:
190.00 $ 12 629,78 P
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