Cisco Catalyst 3850 48 Port Gigabit Switch

Cisco Catalyst 3850 48 Port Gigabit Switch

Cisco Catalyst 3850 48 Port Gigabit Switch

B&H # CIWSC385048T MFR # WS-C3850-48T-E
Cisco Catalyst 3850 48 Port Gigabit Switch

Cisco Catalyst 3850 48 Port Gigabit Switch

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Product Highlights

  • 48 x Gigabit Ethernet Ports
  • 472 Gbps Switching Capacity
  • 130.95 Mpps Forwarding Capacity
  • 480 Gbps Stacking Bandwidth
  • 32,000 MAC Addresses
  • 24,000 IPv4 Routes
  • 48,000 FNF Entries
  • 4 GB DRAM / 2 GB Flash Memory
  • 4,000 VLAN IDs
  • 9198 bytes Jumbo Frame
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Cisco 3850 overview

  • 1Description

Connect a large number of Ethernet-enabled devices to the network including access points, routers, and more using the Catalyst 3850 48 Port Gigabit Switch from Cisco. In addition to enhanced network connectivity, this network switch also features a 350W AC power supply and comes in a 1 RU form factor for easy installation into existing rackmount configurations. Once configured, the switch supports a 472 Gbps switching capacity, a 130.95 Mpps forwarding rate, a 480 Gbps stacking bandwidth, 32,000 MAC addresses, 4,000 VLAN IDs, a 9198-byte Jumbo Frame, and support for up to 208 total routed ports per 3850 stack.

This Cisco switch comes with a large feature set giving network admins complete control over a variety of network settings and options. Initially, this switch supports both wired and wireless services offering a variety of capabilities including stateful switchover (SSO), granular QoS, security, and Flexible Netflow (FNF). The Cisco Catalyst 3850 also supports enhanced QoS functionality complete with Cisco modular QoS command line interface (MQC) to manage bandwidth and optimize network connections to end user devices. To secure the network, this Cisco switch supports 802.1x port security, Dynamic Host Configuration Protocol, Snooping and Guard, Dynamic ARP Inspection, and more.

The Cisco Catalyst 3850 is designed for resiliency using Cisco StackWise-480 Technology which designates a standby switch within the stack should one switch fail. With Cisco StackWise-480 technology the resiliency stack can even be amended allowing switches to be added into or removed without interrupting service. In addition to network resiliency, Cisco StackPower Technology offers power redundancy allowing power supplies to be stacked and shared among the switches throughout the stack.

Dual Redundant Modular Power Supplies
The Cisco Catalyst 3850 Series Switches support dual redundant power supplies. The switch ships with one power supply by default, and the second power supply can be purchased at the time of ordering the switch or at a later time. If only one power supply is installed, it should always be in power supply bay 1. The switch also ships with three field-replaceable fans.
Cisco Catalyst Multigigabit Ethernet Technology
With the enormous growth of 802.11ac and new wireless applications, wireless devices are promoting the demand for more network bandwidth. This creates a need for a technology that supports speeds higher than 1 Gbps on all cabling infrastructure. Cisco Multigigabit technology allows you to achieve bandwidth speeds from 1 Gbps through 10 Gbps over traditional Cat 5e cabling or above. Cisco Multigigabit technology offers significant benefits for a diverse range of speeds, cable types, and PoE power. The benefits can be grouped into three different areas:

  • Multiple speeds: Cisco Multigigabit technology supports auto negotiation of multiple speeds on switch ports. The supported speeds are 100 Mbps, 1 Gbps, 2.5 Gbps, and 5 Gbps on Cat 5e cable and up to 10 Gbps over Cat 6a cabling.
  • Cable type: The technology supports a wide range of cable types, including Cat 5e, Cat 6, and Cat 6a or above.
  • PoE power: The technology supports PoE, PoE+, and UPOE for all the supported speeds and cable types.
Converged Wired Plus Wireless Access
The Cisco Catalyst 3850 enables wired plus wireless services on a single Cisco IOS XE Software-based platform. With this, Cisco has pioneered a host of rich capabilities such as high availability based on stateful switchover (SSO) on stacking, granular QoS, security, and Flexible Netflow (FNF) across wired and wireless in a seamless fashion. Also, the wired plus wireless features are bundled into a single Cisco IOS Software image, which reduces the number of software images that users have to qualify/certify before enabling them in their network. The single console port for command-line interface (CLI) management reduces the number of touch points to manage for wired plus wireless services, thereby reducing network complexity, simplifying network operations, and lowering the TCO to manage the infrastructure.

Converged wired plus wireless not only improves wireless bandwidth across the network but also the scale of wireless deployment. This 48-port Cisco Catalyst 3850 switch provides 40 Gbps of wireless throughput. This wireless capacity increases with the number of members in the stack. This makes sure that the network can scale with current wireless bandwidth requirements, as dictated by IEEE 802.11n-based access points and with future wireless standards such as IEEE 802.11ac. Additionally, the Cisco Catalyst 3850 distributes the wireless controller functions to achieve better scalability. Each Cisco Catalyst 3850 switch/stack can operate as the wireless controller in two modes:

  • Mobility Agent (MA): This is the default mode in which a Cisco Catalyst 3850 switch ships. In this mode, the switch is capable of terminating the CAPWAP tunnels from the access points and providing wireless connectivity to wireless clients. Maintaining wireless client databases and configuring and enforcing security and QoS policies for wireless clients and access points can be enforced in this mode. No additional license on top of IP Base is required to operate in the mobility agent mode.
  • Mobility Controller (MC): In this mode, the Cisco Catalyst 3850 switch can perform all the mobility agent tasks in addition to mobility coordination, radio resource management (RRM), and Cisco CleanAir coordination within a mobility subdomain. The mobility controller mode can be enabled on the switch CLI. IP Base license level is required when the Cisco Catalyst 3850 switch is acting as the mobility controller. A centrally located Cisco 5508 Wireless LAN Controller (WLC 5508), Cisco Wireless Services Module 2 (WiSM2) (when running AireOS Version 7.3), and Wireless LAN Controller 5760 can also perform this role for larger deployments.
Distributed Intelligent Services
Full visibility into the wired plus wireless traffic is achieved because of the access point Control and Provisioning of Wireless Access Points (CAPWAP) tunnel termination on the switch. This helps identify users and user traffic flows in order to identify potential attackers and take corrective action at the access layer before the attack penetrates further into the network. This is achieved using FNF, which monitors every single flow entering and exiting the switch stack for wired and wireless users. It also helps identify the top wired/wireless talkers and enforce appropriate bandwidth provisioning policies.
QoS
The Cisco Catalyst 3850 switch has advanced wired plus wireless QoS capabilities. It uses the Cisco modular QoS command line interface (MQC). The switch manages wireless bandwidth using unprecedented hierarchical bandwidth management starting at the per-access-point level and drilling further down to per-radio, per-service set identification (SSID), and per-user levels. This helps manage and prioritize available bandwidth between various radios and various SSIDs (enterprise, guest, and so on) within each radio on a percentage basis. The switch is also capable of automatically allocating equal bandwidth among the connected users within a given SSID. This makes sure that all users within a given SSID get a fair share of the available bandwidth while being connected to the network. The UADP ASIC enables the hierarchical bandwidth management and fair sharing of bandwidth, thereby providing hardware-based QoS for optimized performance at line-rate traffic.

In addition to these capabilities, the switch is able to do class of service (CoS) or differentiated services code point (DSCP) based queuing, policing, shaping, and marking of wired plus wireless traffic. This enables users to create common policies that can be used across wired plus wireless traffic. The Cisco Catalyst 3850 also supports downloadable policy names from the Cisco Identity Services Engine (ISE) when a user successfully authenticates to the network using the ISE.
Security
The Cisco Catalyst 3850 provides a rich set of security features for wired plus wireless users. Features such as IEEE 802.1x, port security, Dynamic Host Configuration Protocol (DHCP) Snooping and Guard, Dynamic ARP Inspection, RA Guard, IP Source Guard, control plane protection (CoPP), wireless intrusion prevention systems (WIPSs), and so on enable protection against unauthorized users and attackers. With a variety of wired plus wireless users connecting to the network, the switch supports session-aware networking, in which each device connected to the network is identified as one session, and unique access control lists (ACLs) and/or QoS policies can be defined and applied using the ISE for each of these sessions, providing better control on the devices connecting to the network.

AES-256 MACsec encryption is the IEEE 802.1AE standard for authenticating and encrypting packets between switches and endpoints. The Cisco Catalyst 3850 Series switches support 256-bit (SFP+ and mGig models only) and 128-bit Advanced Encryption Standard (AES) on all ports at all speeds, providing the most secure link encryption.
Resiliency
Cisco StackWise - 480 Technology
Cisco StackWise-480 technology is built on StackWise technology, which is a premium stacking architecture. StackWise-480 has a stack bandwidth of 480 Gbps. StackWise - 480 uses Cisco IOS Software SSO for providing resiliency within the stack. The stack behaves as a single switching unit that is managed by an "active" switch elected by the member switches.

The active switch automatically elects a standby switch within the stack. The active switch creates and updates all the switching/routing/wireless information and constantly synchronizes that information with the standby switch. If the active switch fails, the standby switch assumes the role of the active switch and continues to the keep the stack operational. Access points continue to remain connected during an active-to-standby switchover.

A working stack can accept new members or delete old ones without service interruption. StackWise-480 creates a highly resilient single unified system of up to nine switches, providing simplified management using a single IP address, single Telnet session, single CLI, auto version checking, auto upgrading, auto configuration, and more. StackWise-480 also enables local switching in Cisco Catalyst 3850 Series Switches.

Cisco StackPower Technology
The Cisco Catalyst 3850 Series uses the Cisco StackPower technology present on the Cisco Catalyst 3850 Series. StackPower is an innovative power interconnect system that allows the power supplies in a stack to be shared as a common resource among all the switches. Cisco StackPower unifies the individual power supplies installed in the switches and creates a pool of power, directing that power where it is needed. Up to four switches can be configured in a StackPower stack with a special connector at the back of the switch using the StackPower cable, which is different than the StackWise-480 cables.
Cisco StackPower Technology

StackPower can be deployed in either power-sharing mode or redundancy mode. In power-sharing mode, the power of all the power supplies in the stack is aggregated and distributed among the switches in the stack. In redundant mode, when the total power budget of the stack is calculated, the wattage of the largest power supply is not included. That power is held in reserve and used to maintain power to switches and attached devices when one power supply fails, enabling the network to operate without interruption. Following the failure of one power supply, the StackPower mode becomes power sharing.

StackPower allows customers to simply add one extra power supply in any switch of the stack and either provide power redundancy for any of the stack members or simply add more power to the shared pool. StackPower eliminates the need for an external redundant power system or installation of dual power supplies in all the stack members. StackPower is available in LAN Base license level (or higher). For LAN Base, cables need to be purchased separately.

Foundation for Open Network Environment
The heart of the Cisco Catalyst 3850 is the UADP ASIC with programmability for future features and intelligence with investment protection. The new ASIC provides the foundation for converged APIs across wired and wireless, Cisco Open Network Environment, software-defined networking (SDN) readiness and OnePK SDK through software updates over the product lifetime.
Cisco Catalyst Smart Operations
Cisco Catalyst Smart Operations are a comprehensive set of capabilities that simplify LAN deployment, configuration, and troubleshooting. In addition to adaptive, always-on technologies such as StackWise-480 and StackPower, Cisco Catalyst Smart Operations enable zero-touch installation and replacement of switches, fast upgrade, and ease of troubleshooting with reduced operational cost. Cisco Catalyst Smart Operations are a set of features that includes Smart Install, Auto Smartports, Smart Configuration and Smart Troubleshooting to enhance operational excellence:

  • Cisco Smart Install is a transparent plug-and-play technology to configure the Cisco IOS Software image and switch configuration without user intervention. Smart Install utilizes dynamic IP address allocation and the assistance of other switches to facilitate installation, providing transparent network plug and play.
  • Cisco Auto Smartports provide automatic configuration as devices connect to the switch port, allowing autodetection and plug and play of the device onto the network.
  • Cisco Smart Troubleshooting is an extensive array of debug diagnostic commands and system health checks within the switch, including Generic Online Diagnostics (GOLD) and Onboard Failure Logging (OBFL).
  • Embedded Event Manager (EEM) is a powerful and flexible feature that provides real-time network event detection and onboard automation. Using EEM, customers can adapt the behavior of their network devices to align with their business needs. This feature requires the IP Base feature set.
Efficient Switch Operation
Cisco Catalyst 3850 Series Switches, designed and engineered by Cisco, provide optimum power-saving, EEE (on RJ45 ports), low-power operations for industry best-in-class power management and power consumption capabilities. The Cisco Catalyst 3850 ports are capable of reduced power modes so that ports not in use can move into a lower power utilization state. Other efficient switch operation features are:

  • Cisco Discovery Protocol Version 2 allows the Cisco Catalyst 3850 Series Switches to negotiate a more granular power setting when connecting to a Cisco powered device such as IP phones or access points than what is provided by IEEE classification.
  • Per-port power consumption command allows customers to specify maximum power setting on an individual port. Per-port PoE power sensing measures actual power being drawn, enabling more intelligent control of powered devices.
  • The PoE MIB provides proactive visibility into power usage and allows customers to set different power-level thresholds.
Network Management Tools
The Cisco Catalyst 3850 Series Switches offer both a CLI for detailed configuration and Cisco Prime infrastructure for unified wired plus wireless management. Prime infrastructure provides day 0 and ongoing provisioning, ongoing monitoring and maintenance, configuration templates, and device and user 360-degree views and serves as the FNF collector for user traffic views using the Prime Assurance Manager module.
Advanced Security Features
  • Protection against attackers
  • User authentication
  • ACLs
  • Device access
  • Bridge Protocol data unit
  • Spanning Tree Root Guard (STRG)
  • Wireless end-to-end security
Application Visibility and Control Using Flexible NetFlow
Cisco IOS Software FNF is the next generation in flow visibility technology, allowing optimization of the network infrastructure, reducing operation costs, and improving capacity planning and security incident detection with increased flexibility and scalability. The Cisco Catalyst 3850 provides optimized application visibility with FNF across wired plus wireless. The switch is capable of up to 48,000 flow entries on 48-port models across wired plus wireless. With UADP ASIC, Cisco Catalyst 3850 delivers next-generation flow technology with flexibility and visibility extending from Layer 2 (MAC and VLAN) to Layer 4 (TCP/UDP) flags and so on across wired plus wireless traffic. The Cisco Catalyst 3850 switch is Medianet capable to provide visibility and troubleshooting capabilities across wired plus wireless video traffic. Specific Medianet features will be enabled in future software updates.

The flow data collected by FNF can be exported to an external collector for analysis and reporting or tracked by the EEM. The Cisco Catalyst 3850 enables powerful on-box and customizable event correlation and policy actions with EEM, allowing the switches to trigger customized event alarms or policy actions when the predefined condition is met. With no external appliance required, customers are able to use existing infrastructure to perform traffic monitoring, making traffic analysis economical even on a large IP network.
Audio Video Bridging
With Cisco IOS XE Software Release 16.3, Cisco Catalyst 3850 MultiGigabit and 3850 10G SFP+ now support the IEEE 802.1 AVB standard. This standard provided the means for highly reliable delivery of low-latency, time-synchronized AV streaming services through Layer 2 Ethernet networks. The standard also makes it easier to integrate new services and for AV equipment from different vendors to interoperate. Whether the AV endpoint connections are analog or are inflexible digital one to one, the network transport enables many-to-many transparent plug-and-play connections for multiple AV endpoints.
In the Box
Cisco Catalyst 3850 48 Port Gigabit Switch
  • Cisco Enhanced Limited Lifetime Hardware Warranty
  • Table of Contents
    • 1Description

    Cisco 3850 specs

    Ports 48 x 10/100/1000 Ethernet ports
    Switching Capacity 472 Gbps
    Stacking Bandwidth 480 Gbps
    MAC Addresses 32,000
    IPv4 Routing 24,000 (total number of IPv4 routes; ARP plus learned routes)
    Flow Control 48,000 FNF entries
    Memory 4 GB DRAM
    2 GB Flash
    VLAN IDs 4,000
    Jumbo Frame 9198 bytes
    Wireless Number of access points per switch/stack
    100
    Number of wireless clients per switch/stack
    2000
    Total number of WLANs per switch
    64
    Wireless bandwidth per switch
    Up to 40 Gbps on 48-port
    Supported Aironet access point series
    3600, 3500, 2600, 1600, 1260, 1140, 1040
    Power Supply 350 W default AC
    Stacking StackWise-480
    StackPower
    Forwarding Rate 130.95 Mpps
    MTBF 303,660 hours
    Rackmount Enclosure 1 RU
    Power Consumption Uplink Module: C3850-NM-4-1G
    0% Traffic: 117.74 W
    10% Traffic: 116.62 W
    100% Traffic: 117.59 W
    Weighted Average: 116.89 W

    Uplink Module: C3850-NM-2-10G
    0% Traffic: 117.56 W
    10% Traffic: 116.74 W
    100% Traffic: 120.40 W
    Weighted Average: 117.23 W

    Uplink Module: C3850-NM-4-10G
    0% Traffic: 120.56 W
    10% Traffic: 120.28 W
    100% Traffic: 127.24 W
    Weighted Average: 121.02 W
    Dimensions 1.75 x 17.50 x 17.70" / 4.45 x 44.50 x 45.00 cm
    Weight 17.0 lb / 7.7 kg

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