Cisco Catalyst 2975 Series Switches- | Công Ty Công Nghệ Trí Vinh

Sản phẩm

Tìm sản phẩm

Sản phẩm TOSHIBA đạt tiêu chuẩn Bộ Công Thương
Thông tư 30/2011/TT-BCT

Cisco

Cisco Catalyst 2975 Series Switches

Chia sẻ :

Cisco® Catalyst® 2975 Switch with LAN Base software is a fixed-configuration stackable intelligent Ethernet switch with Power over Ethernet (PoE) and Gigabit Ethernet connectivity, enabling enhanced LAN services for commercial branch office networks (see Figure 1). The Cisco Catalyst 2975 LAN Base Switch offers integrated security, including Network Admission Control (NAC), enhanced quality of service (QoS), and resiliency to deliver intelligent services for the network edge.

Feature	Benefit
Ease of Use and Deployment	• Single configuration file for a stack of up to nine switches • Auto provisioning and software image update for new stack members • Express Setup simplifies initial configuration with a web browser, eliminating the need for more complex terminal emulation programs and CLI knowledge. • IEEE 802.3af and Cisco prestandard PoE support comes with automatic discovery to detect a Cisco prestandard or IEEE 802.3af endpoint and provide the necessary power without any user configuration. • Auto Install for configuration and Image update: Simplify management of large number of switches, by automatically downloading specified configuration and image. • DHCP autoconfiguration of multiple switches through a boot server eases switch deployment. • Automatic QoS (Auto QoS) simplifies QoS configuration in voice-over-IP (VoIP) networks by issuing interface and global switch commands to detect Cisco IP phones, classify traffic, and enable egress queue configuration. • Autosensing on each 10/100/1000 port detects the speed of the attached device and automatically configures the port for 10- or 100- or 1000- Mbps operation, easing switch deployment in mixed 10- and 100-Mbps and 1000-Mbps environments. • Autonegotiating on all ports automatically selects half- or full-duplex transmission mode to optimize bandwidth. • Dynamic Trunking Protocol (DTP) helps enable dynamic trunk configuration across all switch ports. • Port Aggregation Protocol (PAgP) automates the creation of Cisco Fast EtherChannel^® groups or Gigabit EtherChannel groups to link 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 feature is similar to Cisco EtherChannel technology and PAgP. • DHCP Server enables a convenient deployment option for the assignment of IP addresses in networks that do not have without a dedicated DHCP server. • DHCP Relay allows a DHCP relay agent to broadcast DHCP requests to the network DHCP server. • 1000BASE-T, 1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX, 1000BASE-BX, 100BASE-FX, and CWDM physical interface support through a field-replaceable SFP module provides unprecedented flexibility in switch deployment. • The default configuration stored in flash memory helps ensure that the switch can be quickly connected to the network and can pass traffic with minimal user intervention. • Automatic medium-dependent interface crossover (Auto-MDIX) automatically adjusts transmit and receive pairs if an incorrect cable type (crossover or straight-through) is installed on a copper port. • Time-domain reflectometer (TDR) to diagnose and resolve cabling problems on copper ports. • Configuration Rollback provides the capability to replace the current running configuration with any saved Cisco IOS Software configuration file. This functionality can be used to revert to a previous configuration state, effectively rolling back any configuration changes that were made since that configuration file was saved. • DHCP Auto Install (Boot Host DHCP) and Auto Image Update allows the switch to automatically download a configuration file and IOS Software image.
Manageability
Superior Manageability	• Single IP address management for a stack of switches • Cisco IOS Software CLI support provides a common user interface and command set with all Cisco routers and Cisco Catalyst desktop switches. • IP Service Level Agreement (responder only) uses active monitoring to generate traffic in a continuous, reliable, and predictable manner, thus enabling the measurement of network performance and health. • Switching Database Manager templates for security and QoS allow administrators to easily adjust memory allocation to the desired features based on deployment-specific requirements. • VLAN trunks can be created from any port using standards-based 802.1q tagging. • Up to 255 VLANs per switch and up to 128 spanning-tree instances per switch are supported. • Four thousand VLAN IDs are supported. • Voice VLAN simplifies telephony installations by keeping voice traffic on a separate VLAN for easier administration and troubleshooting. • Cisco VTP supports dynamic VLANs and dynamic trunk configuration across all switches. • IGMPv3 snooping for IPv4 and MLD v1 and v2 Snooping for IPv6 provide fast client joins and leaves of multicast streams and limits bandwidth-intensive video traffic to only the requestors. • Remote SPAN (RSPAN) allows administrators to remotely monitor ports in a Layer 2 switch network from any other switch in the same network. • For enhanced traffic management, monitoring, and analysis, the Embedded Remote Monitoring (RMON) software agent supports four RMON groups (history, statistics, alarms, and events). • Layer 2 trace route eases troubleshooting by identifying the physical path that a packet takes from source to destination. • All RMON groups are supported through a SPAN port, which permits traffic monitoring of a single port, or a group of ports, from a single network analyzer or RMON probe. • Domain Name System (DNS) provides IP address resolution with user-defined device names. • Trivial File Transfer Protocol (TFTP) reduces the cost of administering software upgrades by downloading from a centralized location. • Network Timing Protocol (NTP) provides an accurate and consistent timestamp to all intranet switches. • Multifunction LEDs per port for port status; half-duplex and full-duplex mode; PoE; and 10BASE-T, 100BASE-TX, and 1000BASE-T indication as well as switch-level status LEDs for system, stack master, and redundant power supply provide a comprehensive and convenient visual management system. • Cisco Discovery Protocol Versions 1 and 2 help enable automatic switch discovery for network management tools and communicate Voice VLAN information with Cisco IP phones. • Link Layer Discovery Protocol (LLDP) and LLDP Media Extensions (LLDP-MED) including client location information. Switches exchange link and device information in multivendor networks. • IPv6 Host provides basic IPv6 management such as IPv4/IPv6 dual stack, unicast address types, ICMPv6, AAAA DNS lookup over IPv4, Secure Shell (SSH) for v6, IPv6 neighbor discovery, CDP, Telnet, TFTP, SNMP, HTTP, HTTPS , Traceroute, syslog for v6.
Cisco Network Assistant Software	• Cisco Network Assistant is a no-charge, Windows-based application that simplifies the administration of networks of up to 250 users. It supports a wide range of Cisco Catalyst intelligent switches. With Cisco Network Assistant, users can manage Cisco Catalyst switches and launch the device managers of Cisco integrated services routers and Cisco Aironet^® WLAN access points. • The easy-to-use graphical interface provides both a topology map and front-panel view of the cluster and stacks. • Configuration wizards need just a few user inputs to automatically configure the switch to optimally handle different types of traffic: voice, video, multicast, and high-priority data. • A security wizard is provided to restrict unauthorized access to applications, servers, and networks. • Upgrading the Cisco IOS Software on Cisco Catalyst switches is a simple matter of pointing and clicking, with one-click upgrades. • Cisco Network Assistant supports multilayer feature configurations such as routing protocols, ACLs, and QoS parameters. • Multidevice and multiport configuration capabilities allow administrators to save time by configuring features across multiple switches and ports simultaneously. • The user-personalized interface allows modification of polling intervals, table views, and other settings. • Alarm notification provides automated email notification of network errors and alarm thresholds.
Cisco Express Setup	• Express Setup simplifies initial configuration of a switch through a web browser, eliminating the need for terminal emulation programs and CLI knowledge. • The web interface helps less-skilled personnel quickly and simply set up switches, thereby reducing the cost of deployment.
CiscoWorks Support	• CiscoWorks network-management software provides management capabilities on a per-port and per-switch basis, providing a common management interface for Cisco routers, switches, and hubs. • SNMPv1, v2c, and v3 and Telnet interface support delivers comprehensive in-band management, and a CLI-based management console provides detailed out-of-band management. • The CiscoWorks LAN Management Solution supports the Cisco Catalyst 2975 Switch.
Availability and Scalability
Superior Redundancy for Fault Backup	• IEEE 802.1x Voice-aware security disables the offending data VLAN when a violation is detected without affecting Voice VLAN on the same switch port • IEEE 802.1x readiness check determines readiness of connected end hosts, before configuring 802.1x on the switch. • Cisco UplinkFast and BackboneFast technologies help ensure quick failover recovery, enhancing overall network stability and reliability. • IEEE 802.1w Rapid Spanning Tree Protocol provides rapid spanning-tree convergence independent of spanning-tree timers and the benefit of distributed processing. • Per-VLAN Rapid Spanning Tree Plus (PVRST+) allows rapid spanning-tree reconvergence on a per-VLAN spanning-tree basis, without requiring the implementation of spanning-tree instances. • Clustering with single IP address management and SNMP and SYSLOG proxy for up to 16 switches. Clustering command-switch redundancy allows designation of a backup command switch that takes over if the primary command switch fails. • Unidirectional Link Detection Protocol (UDLD) and Aggressive UDLD allow unidirectional links to be detected and disabled to avoid problems such as spanning-tree loops. • Switch port autorecovery (errdisable) automatically attempts to re-enable a link that is disabled because of a network error. • Cisco Redundant Power System 2300 (RPS 2300) support provides superior internal power-source redundancy for up to six Cisco networking devices, resulting in improved fault tolerance and network uptime. • Bandwidth aggregation up to 8 Gbps through Cisco Gigabit EtherChannel technology and up to 800 Mbps through Cisco Fast EtherChannel technology enhances fault tolerance and offers higher-speed aggregated bandwidth between switches and to routers and individual servers. • Flex Links provides link redundancy with convergence time 100ms without requiring Spanning Tree Protocol. • VLAN Flex Links load balancing improves network throughput by utilizing both links for traffic distribution for different VLANs. • Link State Tracking provides Layer 2 redundancy in the network when used in conjunction with server or programmable logic controller (PLC) network interface card (NIC) adapter teaming.
Integrated Cisco IOS Software Features for Bandwidth Optimization	• Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall systems performance. • 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 use the extra capacity inherent in a redundant design. • IEEE 802.1s Multiple Spanning Tree Protocol allows a spanning-tree instance per VLAN, enabling Layer 2 load sharing on redundant links. • Egress committed rate (ECR) guarantee provides load balancing and redundancy. • Local Proxy Address Resolution Protocol (ARP) works in conjunction with Private VLAN Edge to minimize broadcasts and maximize available bandwidth. • VLAN1 minimization allows VLAN1 to be disabled on any individual VLAN trunk link. • 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. • Internet Group Management Protocol (IGMP) version 3 snooping provides fast client joins and leaves of multicast streams and limits bandwidth-intensive video traffic to only the requestors. • IGMP filtering provides multicast authentication by filtering out no subscribers and limits the number of concurrent multicast streams available per port. • Multicast VLAN registration (MVR) continuously sends multicast streams in a multicast VLAN while isolating e streams from subscriber VLANs for bandwidth and security reasons.
QoS and Control
Enhanced QoS	• Standard 802.1p CoS and DSCP field classification are provided, using marking and reclassification on a per-packet basis by source and destination IP address, source and destination MAC address, or Layer 4 TCP or UDP port number. • Cisco control-plane and data-plane QoS ACLs on all ports help ensure proper marking on a per-packet basis. • Four egress queues per port enable differentiated management of up to four traffic types. • SRR scheduling helps ensure differential prioritization of packet flows by intelligently servicing the ingress and egress queues. • Weighted tail drop (WTD) provides congestion avoidance at the ingress and egress queues before a disruption occurs. • Strict priority queuing guarantees that the highest-priority packets are serviced ahead of all other traffic. • There is no performance penalty for highly granular QoS functions.
Granular Rate Limiting	• The Cisco CIR function guarantees bandwidth in increments as small as 1 Mbps. • Rate limiting is provided based on source and destination IP address, source and destination MAC address, Layer 4 TCP and UDP information, or any combination of these fields, using QoS ACLs (IP ACLs or MAC ACLs), class maps, and policy maps. • Asynchronous data flows upstream and downstream from the end station or on the uplink are easily managed using ingress policing and egress shaping. • Up to 64 aggregate or individual polices are available per Fast Ethernet or Gigabit Ethernet port.
Security
Networkwide Security Features	• IEEE 802.1x allows dynamic, port-based security, providing user authentication. • IEEE 802.1x with VLAN assignment allows a dynamic VLAN assignment for a specific user regardless of where the user is connected. • IEEE 802.1x with voice VLAN permits an IP phone to access the voice VLAN irrespective of the authorized or unauthorized state of the port. • IEEE 802.1x and port security are provided to authenticate the port and manage network access for all MAC addresses, including those of the client. • IEEE 802.1x with Guest VLAN allows guests without 802.1x clients to have limited network access on the guest VLAN. • Web authentication for non-802.1x clients allows non-802.1x clients to use an SSL-based browser for authentication. • MAC Auth Bypass (MAB) for voice allows third-party IP phones without an 802.1x supplicant to get authenticated using their MAC address. • Port-based ACLs for Layer 2 interfaces allow application of security policies on individual switch ports. • Unicast MAC filtering prevents the forwarding of any type of packet with a matching MAC address. • Unknown unicast and multicast port blocking allows tight control by filtering packets that the switch has not already learned how to forward. • SSHv2 and SNMPv3 provide network security by encrypting administrator traffic during Telnet and SNMP sessions. SSHv2 and the cryptographic version of SNMPv3 require a special cryptographic software image because of U.S. export restrictions. • Bidirectional data support on the Switched Port Analyzer (SPAN) port allows the Cisco Secure intrusion detection system (IDS) to take action when an intruder is detected. • TACACS+ and RADIUS authentication enable centralized control of the switch and restrict unauthorized users from altering the configuration. • MAC address notification allows administrators to be notified of users added to or removed from the network. • DHCP snooping allows administrators to help ensure consistent mapping of IP to MAC addresses. This can be used to prevent attacks that attempt to poison the DHCP binding database, and to rate-limit the amount of DHCP traffic that enters a switch port. • DHCP Interface Tracker (Option 82) feature augments a host IP address request with the switch port ID. • Port security secures the access to an access or trunk port based on MAC address. • After a specific timeframe, the aging feature removes the MAC address from the switch to allow another device to connect to the same port. • Trusted Boundary provides the ability to trust the QoS priority settings if an IP phone is present and to disable the trust setting if the IP phone is removed, thereby preventing a malicious user from overriding prioritization policies in the network. • Multilevel security on console access prevents unauthorized users from altering the switch configuration. • The user-selectable address-learning mode simplifies configuration and enhances security. • 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.
Networkwide Security Features (continued)	• Voice VLAN aware port security and BPDU Guard allow Voice VLAN traffic to not be disrupted when security violations occur. • IGMP filtering provides multicast authentication by filtering out no subscribers and limits the number of concurrent multicast streams available per port. • Dynamic VLAN assignment is supported through implementation of VLAN Membership Policy Server (VMPS) client functions to provide flexibility in assigning ports to VLANs. Dynamic VLAN helps enable the fast assignment of IP addresses. • Cisco Network Assistant software security wizards ease the deployment of security features for restricting user access to a server as well as to a portion of or the entire network. • Up to 512 (ACEs) are supported, with two profiles: Security (384 Security ACL entries and 128 QoS policies), and QoS (128 Security ACL entries and 384 QoS policies).

Brochure

Cisco Catalyst 4500 Series Switches Giá bán: Call	Cisco Catalyst 3750 Series Switches Giá bán: Call	Cisco Catalyst 3750-E Series Switches Giá bán: Call
Cisco Catalyst 3750-X Series Switches Giá bán: Call	Cisco Catalyst 3560 Series Switches Giá bán: Call	Cisco Catalyst 3560-E Series Switches Giá bán: Call
Cisco Catalyst 3560-X Series Switches Giá bán: Call	Cisco Catalyst 3550 Series Switches Giá bán: Call	Cisco Catalyst 2960 Series Switches Giá bán: Call
Cisco Catalyst 2960-S Series Switches Giá bán: Call	Cisco Catalyst 2955 Series Switches Giá bán: Call	Cisco Catalyst 2950 Series Switches Giá bán: Call
Cisco Catalyst 2940 Series Switches Giá bán: Call	Cisco Catalyst 2360 Series Switches Giá bán: Call	Cisco Catalyst 2350 Series Switches Giá bán: Call
Cisco Edge 300 Series Giá bán: Call

Khuyến Mãi Hot

Address	:	51/108 Cao Thang Str, Ward 3, Dist 3, Ho Chi Minh City, Viet Nam
Tel	:	(84-8) 3835 2538
Fax	:	(84-8) 3835 2539
Email	:	info@tvintec.com.vn
URL	:	www.tvintec.com.vn