Cisco WS-C3850-48P-S Product Data Sheet
Data Sheet
Cisco Catalyst 3850 Series Switches
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The Cisco® Catalyst® 3850 Series is the next generation of enterprise-class stackable Ethernet and Multigigabit Ethernet access and aggregation layer switches that provide full convergence between wired and wireless on a single platform. Cisco’s new Unified Access Data Plane (UADP) application-specific integrated circuit (ASIC) powers the switch and enables uniform wired-wireless policy enforcement, application visibility, flexibility and application optimization. This convergence is built on the resilience of the new and improved Cisco StackWise-480 technology. The Cisco Catalyst 3850 Series Switches support full IEEE 802.3at Power over Ethernet Plus (PoE+), Cisco Universal Power over Ethernet (Cisco UPOE), modular and field-replaceable network modules, RJ45 and fiber-based downlink interfaces, and redundant fans and power supplies. With speeds that reach 10Gbps, the Catalyst 3850 Multigigabit Ethernet Switches support current and next-generation wireless speeds and standards (including 802.11ac Wave 2) on existing cabling infrastructure.
Product Overview
●Integrated wireless controller capability with:
◦Up to 40G of wireless capacity per switch (48-port models)
◦Support for up to 50 access points and 2000 wireless clients on each switching entity (switch or stack)
●24 and 48 10/100/1000 data PoE+ and Cisco UPOE models with energy-efficient Ethernet (EEE)
●24 and 48 100Mbps/1/2.5/5/10 Gbps UPOE models with energy-efficient Ethernet (EEE)1
●12and 24-port SFP-based models
◦Cisco StackWise-480 technology provides scalability and resiliency with 480 Gbps of stack throughput
◦Cisco StackPower™ technology provides power stacking among stack members for power redundancy
◦Five optional uplink modules with 4 x Gigabit Ethernet, 2 x 10 Gigabit Ethernet, 4 x 10 Gigabit Ethernet, 8 x 10 Gigabit Ethernet2 or 2 x 40 Gigabit QSFP2 ports
◦Dual redundant, modular power supplies and three modular fans providing redundancy
◦Full IEEE 802.3at (PoE+) with 30W power on all copper ports in 1 rack unit (RU) form factor
◦Cisco UPOE with 60W power per port in 1 rack unit (RU) form factor
●Software support for IPv4 and IPv6 routing, multicast routing, modular quality of service (QoS), Flexible NetFlow (FNF), and enhanced security features
●Single universal Cisco IOS® Software image across all license levels, providing an easy upgrade path for software features
●Enhanced limited lifetime warranty (E-LLW) with next business day (NBD) advance hardware replacement and 90-day access to Cisco Technical Assistance Center (TAC) support
1Additional information will be provided at time of shipment
2Compatible only with Catalyst 3850 Multigigabit Ethernet Switches. Additional information will be provided at time of shipment
© 2015 Cisco and/or its affiliates. This document is Cisco Public Information. |
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Switch Configurations
All switches ship with one of the four power supplies (350WAC, 715WAC, 1100WAC, or 440WDC). Figure 1 shows the Cisco Catalyst 3850 Series Switches.
Figure 1. Cisco Catalyst 3850 Series Switches
Table 1 shows the Cisco Catalyst 3850 Series configurations.
Table 1. |
Cisco Catalyst 3850 Series Configurations |
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Models |
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Total 10/100/1000 or SFP |
Default AC Power Supply |
Available PoE Power |
StackPower |
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Ethernet Ports |
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WS-C3850-24T |
24 |
350WAC |
- |
Yes |
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WS-C3850-48T |
48 |
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WS-C3850-24P |
24 PoE+ |
715WAC |
435W |
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WS-C3850-48P |
48 PoE+ |
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WS-C3850-48F |
48 PoE+ |
1100WAC |
800W |
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WS-C3850-24U |
24 UPOE |
1100WAC |
800W |
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WS-C3850-48U |
48 UPOE |
1100WAC |
800W |
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WS-C3850-12S |
12 SFP |
350WAC |
- |
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WS-C3850-24S |
24 SFP |
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Network Modules
The Cisco Catalyst 3850 Series Switches support three optional network modules for uplink ports. The default switch configuration doesn’t include the uplink module. At the time of switch purchase the customer has the flexibility to choose from the network modules described in Table 2.
Figure 2 shows various network modules:
●4 x Gigabit Ethernet with Small Form-Factor Pluggable (SFP) receptacles
●2 x 10 Gigabit Ethernet with SFP+ or 4 x Gigabit Ethernet with SFP receptacles
●4 x 10 Gigabit Ethernet with SFP+ receptacles (supported on the 48-port models only)
© 2015 Cisco and/or its affiliates. This document is Cisco Public Information. |
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Figure 2. Network Modules with Four Gigabit Ethernet, Two 10 Gigabit Ethernet SFP+, or Four 10 Gigabit Ethernet SFP+ Interfaces
Table 2. |
Network Module Numbers and Descriptions |
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Product Number |
Product Description |
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C3850-NM-4-1G |
4 x Gigabit Ethernet network modules |
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C3850-NM-2-10G |
4 x Gigabit Ethernet/2 x 10 Gigabit Ethernet network modules |
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C3850-NM-4-10G |
4 x Gigabit Ethernet/4 x 10 Gigabit Ethernet network modules |
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Note: The C3850-NM-4-10G module is supported on the 48-port models only.
An SFP+ receptacle supports both 10 Gigabit Ethernet and Gigabit Ethernet modules, allowing customers to use their investment in Gigabit Ethernet SFP modules and upgrade to 10 Gigabit Ethernet when business demands change without having to do a comprehensive upgrade of the access switch. The three network modules are hot swappable and can be used in any of the combinations shown in Table 3.
Table 3. |
Network Module Configurations |
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Interface Options |
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Network Module |
10 Gigabit Ethernet SFP+ Ports |
Gigabit Ethernet SFP Ports |
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4 x Gigabit Ethernet |
0 |
4 |
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4 x Gigabit Ethernet/2 x10 Gigabit Ethernet |
2 |
0 |
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network modules |
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1 |
3 |
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2 |
2 |
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4 x Gigabit Ethernet/4 x10 Gigabit Ethernet |
4 |
0 |
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network modules |
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0 |
4 |
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2 |
2 |
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3 |
1 |
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1 |
3 |
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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. (See Figure 3.)
© 2015 Cisco and/or its affiliates. This document is Cisco Public Information. |
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Figure 3. Dual Redundant Power Supplies
Table 4 shows the different power supplies available in these switches and available PoE power.
Table 4. |
Power Supply Models |
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Models |
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Default Power Supply |
Available PoE Power |
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24-port data switch |
PWR-C1-350WAC |
- |
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48-port data switch |
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24-port PoE switch |
PWR-C1-715WAC |
435W |
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48-port PoE switch |
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48-port full PoE switch |
PWR-C1-1100WAC |
800W |
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24-port UPOE switch |
PWR-C1-1100WAC |
800W |
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48-port UPOE switch |
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12-port SFP switch |
PWR-C1-350WAC |
- |
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24-port SFP switch |
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In addition to the power supplies listed in Table 4, a 440WDC power supply is available as a spare (should be ordered separately) on all switch models. The DC power supply also delivers PoE capabilities for maximum flexibility (refer to Table 5 for available PoE budget with DC power supplies). Customers can mix and match the AC and DC power supplies in the two available power supply slots. Any of these power supplies can be installed in any of the switches.
Table 5. |
Available PoE with DC Power Supply |
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Model |
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Number of 440WDC Power Supplies |
Total Available PoE Budget |
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24-port PoE switch |
1 |
220W |
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2 |
660W |
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48-port PoE switch |
1 |
185W |
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2 |
625W |
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Power over Ethernet Plus (PoE+)
In addition to PoE (IEEE 802.3af), the Cisco Catalyst 3850 Series Switches support PoE+ (IEEE 802.3at standard), which provides up to 30W of power per port. The Cisco Catalyst 3850 Series Switches can provide a lower total cost of ownership (TCO) for deployments that incorporate Cisco IP phones, Cisco Aironet® wireless LAN (WLAN) access points, or any IEEE 802.3at-compliant end device. PoE removes the need for wall power to each PoEenabled device and eliminates the cost for additional electrical cabling and circuits that would otherwise be necessary in IP phone and WLAN deployments. Table 6 shows the power supply combinations required for different PoE needs.
© 2015 Cisco and/or its affiliates. This document is Cisco Public Information. |
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Table 6. |
Power Supply Requirements for PoE and PoE+ |
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24-Port PoE Switch |
48-Port PoE Switch |
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PoE on all ports (15.4W per port) |
One PWR-C1-715WAC |
One PWR-C1-1100WAC or two PWR-C1- |
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715WAC |
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PoE+ on all ports (30W per port) |
One PWR-C1-1100WAC or two PWR-C1- |
Two PWR-C1-1100WAC or one PWR-C1- |
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715WAC |
1100WAC and one PWR-C1-715WAC |
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Cisco Universal Power over Ethernet (UPOE)
Cisco Universal Power over Ethernet is a breakthrough technology, offering the following services and benefits
●60W per port to enable a variety of end devices such as Samsung VDI client, BT IP turret systems in trading floors, Cisco Catalyst compact switches in retail/hospitality environments, personal Cisco Telepresence® systems, and physical access control devices
●High availability for power and guaranteed uninterrupted services, a requirement for critical applications (e911)
●Lowering OpEx by providing network resiliency at lower cost by consolidating backup power into the wiring closet
●Faster deployment of new campus access networking infrastructures by eliminating the need for a power outlet for every endpoint
Table 7. |
Power Supply Requirements for UPOE |
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24-Port UPOE Switch |
48-Port UPOE Switch |
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UPOE (60W per port) on all (24 port switch) |
One PWR-C1-1100WAC and one PWR-C1- |
Two PWR-C1-1100WAC |
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or max. 30 ports (48 port switch) |
715WAC |
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Benefits
Converged Wired plus Wireless Access
The Cisco Catalyst 3850 is the first stackable access switching platform that 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. Each 48-port Cisco Catalyst 3850 provides 40 Gbps of wireless throughput (20 Gbps on the 24-port/12-port models). 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:
© 2015 Cisco and/or its affiliates. This document is Cisco Public Information. |
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●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.
With mobility agents located in the wiring closets providing 40 Gbps of wireless per 48-port switch (n x 40 Gbps for a stack of n switches) and mobility controllers managing some of the central wireless functions, the converged access-based wireless deployment provides best-in-class scalability for wireless and significantly improved wireless throughput.
Figure 4. Mobility Controller (MC) and Mobility Agent (MA)
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For more information on Converged Wired plus Wireless Access, refer to the Q&A document here: http://www.cisco.com/c/dam/en/us/products/collateral/switches/catalyst-3850-series-switches/cisco-catalyst-3850- series-switches-faq.pdf.
Distributed Intelligent Services
Flexible NetFlow (FNF)
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.
Resiliency
Cisco StackWise-480 Technology
Cisco StackWise-480 technology is built on the highly successful industry-leading 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.
© 2015 Cisco and/or its affiliates. This document is Cisco Public Information. |
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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 the special connector at the back of the switch using the StackPower cable, which is different than the StackWise-480 cables. (See Figure 5.)
Figure 5. StackWise-480 and StackPower Connectors
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.
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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.
Software Features and Services on Cisco Catalyst 3850 Series Switches
Software services supported on the Cisco Catalyst 3850 Series Switches can be classified into five broad categories:
●Ease of operations
●Advanced security features
●Resiliency
●Application visibility and control
Ease of Operations
The Cisco Catalyst 3850 helps reduce the operating costs through:
●Cisco Catalyst Smart Operations
●Easy-to-use deployment and control features
●Efficient switch operations
●Network management tools
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.
© 2015 Cisco and/or its affiliates. This document is Cisco Public Information. |
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