Cisco Switch WS-C3850-48P-S Catalyst 48 Port Gig, PoE+

Product Overview

●    Integrated wireless controller capability with:

◦    Up to 40G of wireless capacity per switch (48-port RJ45 models)

◦    Support for up to 100 access points and 2000 wireless clients on each switching entity (switch or stack)

●    24 and 48 10/100/1000Mbps data PoE+ and Cisco UPOE models with Energy-Efficient Ethernet (EEE)

●    24 and 48 100Mbps/1/2.5/5/10 Gbps Cisco UPOE models with Energy-Efficient Ethernet (EEE)

●    12- and 24-port 1 Gigabit Ethernet SFP-based models

●    12- and 24-port 1/10 Gigabit Ethernet SFP+-based models

●    48-port 1/10 Gigabit Ethernet SFP+ model with 4 fixed 40 Gigabit Ethernet QSFP+ uplinks

●    Cisco StackWise-480 technology provides scalability and resiliency with 480 Gbps of stack throughput^[1]

●    Cisco StackPower^® technology provides power stacking among stack members for power redundancy¹

●    Five optional uplink modules^[2] with 4 x Gigabit Ethernet, 2 x 10 Gigabit Ethernet, 4 x 10 Gigabit Ethernet^[3], 8 x 10 Gigabit Ethernet4, or 2 x 40 Gigabit Ethernet QSFP+^[4] 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

●    IEEE 802.3bz (2.5/5 G/s BASE-T) to go beyond 1 Gb/s with existing Cat5e and Cat6

●    IEEE 802.1ba AV Bridging (AVB) built-in to provide better AV experience for including improved time synchronization and QoS

●    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

●    Cisco DNA services delivered through Cisco ONE^™ Software, providing simplified, high-value solutions with license portability and flexibility

●    Support for AES-256 with the powerful MACSEC 256-bit for SFP+ and Multigigabit models and 128-bit encryption algorithm available on all models

●    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

Switch Models and Configurations

All switches ship with one of the five power supplies (350WAC, 715WAC, 750WAC, 1100WAC, or 440WDC)^[5]. Figures 1 through 4 show the Cisco Catalyst 3850 Series Switches.

Cisco Catalyst 3850 Series Switches

Cisco Catalyst 3850 Series Switches with 12 and 24 1/10 Gigabit Ethernet SFP+ ports

Cisco Catalyst 3850 Series Switches with 12 and 24 1 Gigabit Ethernet SFP ports

Cisco Catalyst 3850 Series Switches with 10 Gigabit Ethernet 48 ports

Table 1 shows the Cisco Catalyst 3850 Series configurations.

Table 1.      Cisco Catalyst 3850 Series configurations

Network modules

The Cisco Catalyst 3850 Series Switches support five optional network modules for uplink ports. The default switch configuration does not include the network module. At the time of switch purchase the customer has the flexibility to choose from the network modules described in Table 2.

Figure 5 shows the following 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 only on the 48-port Gigabit Ethernet models or on the 12-port or higher 10 Gigabit Ethernet models)

Network modules with four Gigabit Ethernet, two 10 Gigabit Ethernet SFP+, or four 10 Gigabit Ethernet SFP+ interfaces

Figure 6 shows the following network modules:

●    8 x 10 Gigabit Ethernet with Small Form-Factor Pluggable+ (SFP+) receptacles

●    2 x 40 Gigabit Ethernet with Quad Small Form-Factor Pluggable+ (QSFP+) receptacles

Network modules with two 40 Gigabit Ethernet QSFP+ or eight 10 Gigabit Ethernet SFP+ interfaces

The C3850-NM-4-10G module is supported only on the 48-port Gigabit Ethernet models or on the 12-port or higher 10 Gigabit Ethernet models. The C3850-NM-8x10G and C3850-NM-2x40G modules are supported on the 24-port and 48-port multigigabit switches and also on the 24-port 10G SFP+ switch model. The C3850-NM-4-1G and C3850-NM-2-10G modules are not supported on the 12-port and 24-port SFP+ models.

Table 2.        Network module compatibility matrix

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. In contrast, SFP receptacles can be used only as Gigabit Ethernet ports, as shown in the examples in Table 3.

Table 3.      Network module configuration examples

Dual redundant modular power supplies

The Cisco Catalyst 3850 Series Switches support dual redundant power supplies.^[6] 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 7.)

Dual redundant power supplies

Table 4 shows the different power supplies available in these switches and available PoE power.

Table 4.      Power supply models

In addition to the power supplies listed in Table 5, a 440WDC power supply is available as a configuration option and also as a spare (that is, it can be ordered separately) on all switch models. The DC power supply also delivers PoE capabilities for maximum flexibility (refer to Table 6 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

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 PoE-enabled 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.

Table 6.        Power supply requirements for PoE and PoE+

Cisco Universal Power over Ethernet (Cisco UPOE)

Cisco UPOE (Table 7) 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 Cisco UPOE

Cisco Catalyst Multigigabit Ethernet technology

Cisco Multigigabit Ethernet is a unique Cisco innovation to the new Cisco Catalyst Ethernet access switches. 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. In addition, the Multigigabit ports on select Cisco Catalyst switches support UPOE, which is increasingly important for next-generation workspaces and Internet of Things (IoT) ecosystems.

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 autonegotiation 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.

For more information, visit https://www.cisco.com/c/en/us/solutions/enterprise-networks/catalyst-multigigabit-switching/index.html.

SD-Access architecture

What if you could give time back to IT? And provide network access in minutes for any user or device to any application – without compromise?

Cisco Software-Defined Access (SD-Access) is the industry’s first intent-based networking solution for the enterprise, built on the principles of Cisco’s Digital Network Architecture (Cisco DNA). SD-Access provides automated, end-to-end segmentation to separate user, device, and application traffic without the need to redesign the network. SD-Access automates user access policy so organizations can make sure the right policies are established for any user or device with any application across the network. This is accomplished with a single network fabric across LAN and WLAN, which creates a consistent user experience anywhere without compromising on security.

Organizations have many challenges today in managing the network to drive business outcomes. These limitations are due to manual configuration and fragmented tool offerings. SD-Access provides:

●    A transformational management solution that reduces operational expenses and enhances business agility

●    Consistent management of wired and wireless network provisioning and policy

●    Automated network segmentation and group-based policy

●    Contextual insights for fast issue resolution and capacity planning

●    Open and programmable interfaces for integration with third-party solutions

For an overview of key use cases that SD-Access addresses, refer to the SD-Access Solution Overview.

SD-Access licensing

To be able to benefit from the SD-Access architecture, you must purchase an add-on licensing package. Such licensing package includes the Cisco DNA Essentials and Cisco DNA Advantage options. Add-on licenses have to be purchased for a 3-, 5-, (and hence are also known as term-based licenses). Product SKUs for these packages are given in Table 10 below.

Ordering and managing licenses with smart accounts: Creating smart accounts by using the Cisco Smart Software Manager (SSM) enables you to order devices and licensing packages and also to manage your software licenses from a centralized website. You can set up Cisco SSM to receive daily email alerts and to be notified of expiring add-on licenses that you want to renew. When the license term expires, you can either renew the add-on license to continue using it or deactivate the add-on license and then reload the switch to continue operating with the base license capabilities.

Note:    You are not required to deploy Cisco DNA Center just to use one of the license packages.

Table 8 shows the features included in the Essentials and Advantage packages.

Table 8.      Essentials and Advantage package features

Table 9 shows the product IDs for these licenses.

Table 9.      Essentials and Advantage package product IDs