Cisco Cisco CBS250-24T-4G L2-Managed Gigabit Switch 24 Port, 4 SFP
    • Cisco Cisco CBS250-24T-4G L2-Managed Gigabit Switch 24 Port, 4 SFP

    Cisco CBS250-24T-4G L2-Managed Gigabit Switch 24 Port, 4 SFP

    Cisco CBS250-24T-4G L2-Managed Gigabit Switch 24 Port Gigabit, 4 Port SFP รองรับ VLAN, Spanning Tree Protocol (STP), Access Control List (ACL), Quality Of Service (QoS), IPv4/IPv6 static routing


    Cisco Business 250 Series Datasheet

    Product Specification


    Cisco CBS250-24T-4G L2-Managed Gigabit Switch 24 Port Gigabit, 4 Port SFP รองรับ VLAN, Spanning Tree Protocol (STP), Access Control List (ACL), Quality Of Service (QoS), IPv4/IPv6 static routing

    Capacity in millions of packets per second (mpps) (64-byte packets)

    41.66 mpps

    Switching capacity in gigabits per second (Gbps)

    56 Gbps

    Layer 2 switching

    Spanning Tree Protocol (STP)

    Standard 802.1d spanning tree support
    Fast convergence using 802.1w (Rapid Spanning Tree Protocol [RSTP]), enabled by default
    Multiple spanning tree instances using 802.1s (MSTP); 8 instances are supported
    Per-VLAN Spanning Tree Plus (PVST+); 126 instances are supported
    Rapid PVST+ (RPVST+); 126 instances are supported

    Port grouping/link aggregation

    Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP)
    Up to 4 groups
    Up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad Link Aggregation Group (LAG)


    Support for up to 255 active VLANs simultaneously
    Port-based and 802.1Q tag-based VLANs
    Management VLAN
    Guest VLAN

    Voice VLAN

    Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS. Auto voice capabilities deliver networkwide zero-touch deployment of voice endpoints and call control devices

    Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP)

    Protocols for automatically propagating and configuring VLANs in a bridged domain

    IGMP (versions 1, 2, and 3) snooping

    Internet Group Management Protocol (IGMP) limits bandwidth-intensive multicast traffic to only the requesters; supports 255 multicast groups (source-specific multicasting is also supported)

    IGMP querier

    Used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router

    HOL blocking

    Head-of-Line (HOL) blocking prevention

    Loopback detection

    Provides protection against loops by transmitting loop protocol packets out of ports on which loop protection has been enabled. It operates independently of STP.

    Layer 3 routing

    IPv4 routing

    Wire-speed routing of IPv4 packets
    Up to 32 static routes and up to 16 IP interfaces

    IPv6 routing

    Wire-speed routing of IPv6 packets

    Layer 3 interface

    Configuration of Layer 3 interface on physical port, LAG, VLAN interface, or loopback interface

    Classless Interdomain Routing (CIDR)

    Support for CIDR

    Dynamic Host Configuration Protocol (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 Bootstrap Protocol (BootP)/DHCP packets


    Secure Sockets Layer (SSL)

    SSL encrypts all HTTPS traffic, allowing secure access to the browser-based management GUI in the switch

    Secure Shell (SSH) Protocol

    SSH is a secure replacement for Telnet traffic. Secure Copy (SCP) also uses SSH. SSH v1 and v2 are supported.

    IEEE 802.1X (authenticator role)

    Remote Authentication Dial-In User Service (RADIUS) authentication, guest VLAN, single/multiple host mode, and single/multiple sessions

    STP loopback guard

    Provides additional protection against Layer 2 forwarding loops (STP loops)

    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, and so on) securely on the switch, populating this data to other devices, and secure autoconfig. Access to view the sensitive data as plain text or encrypted is provided according to the user-configured access level and the access method of the user

    Trustworthy systems

    Trustworthy systems provide a highly secure foundation for Cisco products

    Run-time defenses (Executable Space Protection [X-Space], Address Space Layout Randomization [ASLR], Built-In Object Size Checking [BOSC])

    Port security

    Ability to lock source MAC addresses to ports and limit the number of learned MAC addresses


    Supports RADIUS authentication for management access. Switch functions as a client.

    Storm control

    Broadcast, multicast, and unknown unicast

    DoS prevention

    Denial-of-Service (DoS) attack prevention

    Multiple user privilege levels in CLI

    Level 1, 7, and 15 privilege levels

    Access Control Lists (ACLs)

    Support for up to 512 rules

    Drop or rate limit based on source and destination MAC, VLAN ID or IPv4 or IPv6 address, IPv6 flow label, 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; ACL can be applied on both ingress and egress sides

    Time-based ACLs supported

    Quality of service (QoS)

    Priority levels

    8 hardware queues


    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 reduce and prevent global TCP loss synchronization



    IPv6 host mode
    IPv6 over Ethernet
    Dual IPv6/IPv4 stack
    IPv6 Neighbor Discovery (ND)
    IPv6 stateless address auto configuration
    Path Maximum Transmission Unit (MTU) discovery
    Duplicate Address Detection (DAD)
    Internet Control Message Protocol (ICMP) version 6
    IPv6 over IPv4 network with Intrasite 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

    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), Simple Network Management Protocol (SNMP), Remote Authentication Dial-In User Service (RADIUS), Syslog, DNS client, DHCP client, DHCP autoconfig


    Web user interface

    Built-in switch configuration utility for easy browser-based device configuration (HTTP/HTTPS). Supports configuration, wizards, system dashboard, system maintenance, and monitoring

    Basic and advanced mode for maximum operational efficiency


    SNMP versions 1, 2c, and 3 with support for traps, and SNMP v3 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
    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 4 source ports can be mirrored to one destination port

    VLAN mirroring

    Traffic from a VLAN can be mirrored to a port for analysis with a network analyzer or RMON probe. Up to 4 source VLANs can be mirrored to one destination port

    Dynamic Host Configuration Protocol (DHCP) (options 12, 66, 67, 129, and 150)

    DHCP options facilitate tighter control from a central point (DHCP server), to obtain IP address, autoconfiguration (with configuration file download), DHCP Relay, and host name

    Secure Copy (SCP)

    Securely transfers files to and from the switch

    Autoconfiguration with SCP file download

    Enables mass deployment with protection of sensitive data

    Text-editable configs

    Config files can be edited with a text editor and downloaded to another switch, facilitating easier mass deployment


    Simplified configuration of QoS and security capabilities

    Auto Smartports

    Automatically applies the intelligence delivered through the Smartports roles to the port based on the devices discovered over Cisco Discovery Protocol or LLDP-MED. This facilitates zero-touch deployments.

    Text view Command-Line Interface (CLI)

    Scriptable CLI. A full CLI as well as a menu-based CLI is supported. User privilege levels 1, 7, and 15 are supported for the CLI.

    Cloud services

    Support for Cisco Business Dashboard and Cisco Active Advisor

    Embedded Probe for Cisco Business Dashboard

    Support for embedded probe for Cisco Business Dashboard running on the switch. Eliminates the need to set up a separate hardware or virtual machine for the Cisco Business Dashboard Probe on site.

    Cisco Network Plug and Play (PnP) agent

    The Cisco Network Plug and Play solution provides a simple, secure, unified, and integrated offering to ease new branch or campus device rollouts or for provisioning updates to an existing network. The solution provides a unified approach to provision Cisco routers, switches, and wireless devices with a near-zero-touch deployment experience.

    Supports Cisco PnP Connect


    Localization of GUI and documentation into multiple languages

    Login banner

    Configurable multiple banners for web as well as CLI

    Other management

    Traceroute; single IP management; HTTP/HTTPS; RADIUS; port mirroring; TFTP upgrade; DHCP client; Simple Network Time Protocol (SNTP); cable diagnostics; Ping; syslog; Telnet client (SSH secure support); automatic time settings from Management Station



    The switch advertises itself using the Bonjour protocol

    Link Layer Discovery Protocol (LLDP) (802.1ab) with LLDP-MED extensions

    Link Layer Discovery Protocol (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

    The switch advertises itself using the Cisco Discovery Protocol. It also learns the connected device and its characteristics using Cisco Discovery Protocol

    Power over Ethernet (PoE)

    802.3at PoE+ and 802.3af PoE delivered over any of the RJ-45 ports within the listed power budgets

    The following switches support 802.3at PoE+, 802.3af, and Cisco prestandard (legacy) PoE. Maximum power of 30.0W to any 10/100 or Gigabit Ethernet port, until the PoE budget for the switch is reached. The total power available for PoE per switch is as follows:

    Power dedicated to PoE


    Number of ports that support PoE



    RJ-45 ports


    Combo ports (RJ-45 + SFP)


    Console port

    Cisco Standard mini USB Type-B / RJ45 console port

    USB slot

    USB Type-A slot on the front panel of the switch for easy file and image management


    Reset button

    Cabling type

    Unshielded Twisted Pair (UTP) Category 5e or better for 1000BASE-T


    System, Link/Act, PoE, Speed


    256 MB


    800 MHz ARM


    512 MB

    Packet buffer


    Unit dimensions (W x H x D)

    445 x 240 x 44 mm (17.5 x 9.45 x 1.73 in)

    Unit weight

    2.63 kg (5.80 lb)


    100 to 240V 50 to 60 Hz, internal, universal: CBS250-16T-2G, CBS250-16P-2G, CBS250-24T-4G, CBS250-24PP-4G, CBS250-24P-4G, CBS250-24FP-4G, CBS250-48T-4G, CBS250-48PP-4G, CBS250-48P-4G, CBS250-24T-4X, CBS250-24P-4X, CBS250-24FP-4X, CBS250-48T-4X, CBS250-48P-4X100 to 240V 50 to 60 Hz, external: CBS250-8T-E-2G, CBS250-8PP-E-2G, CBS250-8P-E-2G, CBS250-8FP-E-2G


    UL (UL 60950), CSA (CSA 22.2), CE mark, FCC Part 15 (CFR 47) Class A

    Operating temperature

    23° to 122°F (-5° to 50°C)

    Storage temperature

    -13° to 158°F (-25° to 70°C)

    Operating humidity

    10% to 90%, relative, noncondensing

    Package contents

    Cisco Business 250 Series Smart Switch
    Power cord (power adapter for 8-port SKUs)
    Mounting kit
    Quick Start Guide


    Life Time


    5 รายการ

    Data sheet

    ประเภท Switch
    L2 Managed
    ความเร็ว Port Lan
    1Gbps (Gigabit)
    จำนวน Port Lan
    24 Port
    SFP Port Gigabit
    1-2 Port


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