06. conf . Also can i achieve virtual stack using 50CM. com. 05. Figures 1 through 4 show the Cisco Catalyst 3850 Series Switches. Network Advantage for Catalyst 9000 family. 03. After the switch boots the IOS-XE, copy the IOS-XE file into the switch's flash. Configuration Guides. Cisco Catalyst 3850 Series Switches Data Sheet Updated. Cisco Catalyst 3850 Series Switches Data Sheet. While holding the MODE button down, restore power to the switch. 1. Cisco announces the end-of-sale and end-of-life dates for the Cisco Catalyst 3850 switches. Reviewed by. Cisco Catalyst 3850 Series Switches are the next generation of enterprise class stackable access layer switches, with the new and improved 480-Gbps StackWise. Reload the switch (use the power cable). The example below, shows how to properly connect a stack of six 3850 switches, together with a power-stack connection example. It is not predictable which one goes into this state. 06. Catalyst 3650 and 3850 series switches have been certified by the Avnu Alliance. For the purposes of this documentation set, bias-free is defined as language. Switch# (config) ip routing. Each switch has two stack-wise ports (left), let's name the stack wise ports P1 and P2 as shown in the picture. I pulled a brand new Cisco 3850 Switch out of the box yesterday. The image for the 3850 is very big 250Mb+ so copying via TFTP can take a while, a much better solution is to use a USB stick. This configuration allows the directly connected hosts to receive traffic from multicast source 200. Stack Member Numbers The stack member number (1 to 9) identifies each member in the switch stack. The Cisco Catalyst 3850 series is the enterprise-class stackable access-layer switches that provide full convergence between wired and wireless on a single platform. Prerequisites. This document describes how to troubleshoot Power over Ethernet (PoE) Imax errors on Catalyst 3650/3850 switches. SPA. Run no switch # provision. Step 4 The switch now operates like an unconfigured switch. Right-to-use (RTU) licensing allows you to order and activate a specific license type and level, and then to manage license usage on your switch. 1 RU. Through our monitoring system we saw an peak in the CPU usage on one of our C3850 switch stacks. Base Switch - C3850-24XS-S++ Catalyst 3850 24 Port 10G Fiber Switch IP Base TAA See Product Migration Options section for details. The Install mode uses a package-provisioning file named packages. Do the Express Setup to enter the initial IP information. Book Title. >>Check the config-value , it should be same for allow. 53. 2. 04. Go to solution. Figure 8. Standalone Cisco Catalyst 3850 Switch that supports SFP+ transceivers, 48 ports that support up to 10G, and 4 QSFP ports that support up to 40G, and 750WAC back-to-front power supply. Attempts to store packet captures on devices other than flash or USB flash devices connected to the active switch will probably result in errors. Run no switch # provision. Products. 8. Maybe contact Cisco and see if a 9300 with 24/48. The total AP-Count license of the stack is affected when stack members are added. WS-C3850-48XS-S. Beginner In response to Seb Rupik. Switch(config)#no boot system switch all flash:cat3k_caa-universalk9. Selects the trunk port for which VLANs should be pruned, and enter interface configuration mode. Products. 10. † In the Management Interface (VLAN ID) field, the default is 1. 06. 05. you must have Vlans in database ( usually stored on vlan. PDF - Complete Book (13. (optional) Copy tftp: flash: (or) Copy tftp: usbflash0: •2. Network Diagram. x (Catalyst 3850 Switches) Configuring Precision Time Protocol (PTP). Note: For proper functionality, the switch must be at the firmware version shown in Table 1 before proceeding with configuration. 3-meter StackPower cables and one 1. SPA. 1b80 - Local Mac Address Mac persistency wait time: Indefinite H/W Current Switch# Role Mac Address Priority Version. 0 Helpful Reply. 08-20-2020 02:11 AM. 5 cm) (with the FAN FRUs installed but without the power supplies installed) Weight . Visit the Amazon Renewed Store. remaining Ports are down not providing power to AP's. To return to privileged EXEC mode, press Ctrl-Z or enter end. This configuration captures both ingress and egress on GigabitEthernet4/0/1, matches on any IPv4 packets, and stores it to the flash as. C9300-24S - C3850-32XS-E++ Cisco Catalyst 3850 32 Port 10G Fiber Switch IP Services TAA C9300X-24Y Catalyst 9300X 24x25G Fiber Ports, Base Switch -Please don't forget to rate all helpful responses and mark solutions! 01-30-2019 09:28 PM. 6% of my total CPU power, I. E into each switch connected to. (4. 03. Informations relatives à la conformité et à la sécurité du commutateur Catalyst 3850 (PDF - 7 MB) 29/Jan/2013. Find out more about the Cisco End-of. Cisco 3850 switches are part of the Cisco® Digital Network Architecture (Cisco DNA) portfolio, which helps connect IT and your business. All switches ship with one of the five power supplies (350WAC, 715WAC, 750WAC, 1100WAC, or 440WDC)5. Figure 3 shows the back panel of the WS-C3850-12S-E switch. The last day to order the affected product(s) is September 5, 2023. When correctly inserted, the 350-W and 715-W power supplies (excluding the power cord retainer) are flush with the switch rear panel. Updated on November 7, 2023. Obviously if you are intending to find the equivalent of a single 3850 switch the cost of this option will not stack up. The replacement switch must be a Catalyst 3850 switch. After approx. Take the configuration backup before proceeding upgrade. Cisco announces the end-of-sale and end-of-life dates for the Cisco Catalyst 3850 switches. Los switches Catalyst de Cisco serie 3850 ya no se venden, pero Cisco los sigue admitiendo. 11. )The RJ-45 console port is on the rear panel of the switch. Cisco's new Unified Access Data Plane (UADP) application-specific integrated circuit (ASIC) powers the switch and enables uniform wired-wireless policy. Network management Interface. 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 the Cisco Catalyst 3850 switch ships. Here is the output when trying to boot and all dir names. 4E. 77 shipping. Cisco Catalyst 3850 Series Switches with 12 and 24 1/10 Gigabit Ethernet SFP+ ports Figure 3. WS-C3850-24S- S supports. after i do these commands, then the switch take the new version. The C3850-NM-4-1G and C3850-NM-2-10GCisco WS-C3850-24XS-S Price and Datasheet, buy Cisco Systems Catalyst 3850 C3850-24XS-S 24 Port 10G Fiber Switch IP Base at Router-Switch. Stackable, with SFP+ transceivers, 48 ports that support up to 10 G, and 4 ports that support up to 40 G. We use the switch to supply DHCP for the VLANs. Table 1. There are minor differences between the two modes. Cisco Catalyst C3850-24P Switch Layer 2- Access Layer – 24 * 10/100/1000 Ethernet POE+ ports – LAN Base – managed- stackable $ 8,924. In the examples that follow, the switches are stacked in a vertical rack or on a table. bin. 7 CAT3K_CAA-UNIVERSALK9 INSTALL It appears it is measuring the CPU for switch 3. We are using Cisco 3850 Poe - 24 port Switch. The Cisco Catalyst 3850 series is the enterprise-class stackable access-layer switches that provide full convergence between wired and wireless on a single platform. On each switch, you can configure a maximum of 8 source sessions and 58 RSPAN destination sessions. The 3850, includes a feature called “Auto-Upgrade” which might be familiar if you are migrating from the 3750 series platform. Network Diagram. A network engineer. Simply changing the boot statement to the desired . The process is very simple and much easier than using tftp. Review. 06. Once the switch has booted you can copy the saved config back into the running config. Cisco’s Unified Access Data Plane (UADP) application-specific integrated circuit (ASIC) powers the switch and enables uniform wired-wireless policy enforcement. 2 x 10GE. Big Discount for Cisco 3850 price, buy Brand New Cisco Catalyst 3850 at Router-Switch. Cisco Catalyst 3850 Series Switches. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age,. Bundle mode: Bundle mode is where we boot the switch/stack using the . When managing a device stack, connect the PC to the Ethernet management port on a. Step 2: Power down the failed switch. Figure1:C3850-NM-4-1GNetworkModule 1 Captivescrews 3 LEDs 2 1GEthernetSFPslots Figure2:C3850-NM-2-10GNetworkModule 1 Captivescrews 3 1GEthernetSFPslotsSwitch # configure terminal Enters global configuration mode. 1b80 - Local Mac Address Mac persistency wait time: Indefinite H/W Current Switch# Role Mac Address Priority Version. The default is 0; the range is 1 to 1440 minutes. Configuration Guides. For the purposes of this documentation set, bias-free is defined as language that does not imply discrimination based on age,. † In the Management Interface (VLAN ID) field, the default is 1. After expanding the pkg files the reboots are working flawlessly. Catalyst 3850 Switch Hardware Installation Guide . Further, it supports up to 100 access points and 2. Obtenga más información sobre la política de fin de vida útil de Cisco. Cisco Catalyst 3850 Series Switches with 12 and 24 1/10 Gigabit Ethernet SFP+ ports Figure 3. This switch is stackable, meaning that multiple 3850 Series models can be. 8 27/Jun/2014. The LEDs stop blinking after 7 more seconds, and then the switch restarts. Jump to a Section. Take the configuration backup before proceeding upgrade. Then boot the switch. Switch>enable. WARNING : Emergency-Install command will erase the flash/bootflash of the appliance. 5 cm) (with the FAN FRUs installed but without the power supplies installed) Weight . Switch(config)#boot system switch all flash:packages. Please Login again. 47 MB) PDF - This Chapter (1. The last day to order the affected product(s) is October 30, 2020. While constructing any sort of office, the most fundamental piece of gear you will require is Switch. I am trying to issue the "switch 1 provision" command on a WS-C3850-48F switch with four GE uplinks. 3. You can use two AC modules, two DC modules, one AC and one DC module, or one module and a blank cover. After a few minutes, it is elected as the "Standby" and goes into "HA sync in progress" mode. When the router boots up it loads the 'startup configuration'. Remove AC or DC input power, and if the switch is part of a StackPower stack, remove the StackPower cables. Step 3: Make sure the replacement switch is powered off, and then connect it to the stack. conf file. Figures 1 through 4 show the Cisco Catalyst 3850 Series Switches. StackWise-480 supports a mixed stack of any Catalyst 3850 models (48 ports 10/100/1000, 24 ports 10/100/1000, and 12/24 Ethernet SFP ports; see Figure 1). Please check the release notes for details. The Catalyst 3850 family of switches are Ethernet switches to which you can connect devices such as Cisco IP Phones, Cisco Wireless Access Points, workstations,. Page 43 Product Overview Fan Module Note The WS-C3850 switches require three fans for proper cooling. You can use a routing protocol (EIGRP, OSPF, etc. 10 Helpful Reply. bin. Keep holding the button and apply power. When correctly inserted, the 350-W and 715-W power supplies (excluding the power cord retainer) are flush with the switch rear panel. The initial step is to power your switch off, on the off chance that you are running a Cisco 3850 series stack guarantee to expel all power cables and if. Cisco 3850 Ethernet Switch – 24 Ports – 24 x 10/100/1000 Ethernet port, 350WAC force supply, LAN Base list of capabilities – StackPower Cables NOT Included (WS-C3850-24T-L Datasheet). You can use the Ethernet management port instead of the device console port for network management. You need to unprovision 1st switch, renumber the 2nd switch and reload the switch so it would remove the configuration of already-removed switch and become 1st switch (choose 'Yes' for all questions and save the configuration before reloading it). 04. C3850-01#software install file <source>:<filename. The Ethernet management port, also referred to as the Gi0/0 or GigabitEthernet0/0 port, is a VRF (VPN routing/forwarding) interface to which you can connect a PC. exeforWindows32. I can do a dir flash:. Line configuration. Switch and/or router firmware had (past tense) a simple procedure, however, for IOS-XE each platform has different commands, process & procedures, and “gotchas”. X to 16. Once the switch has booted you can copy the saved config back into the running config. To reset the switch to factory default, issue the e rase startup-config or write erase command. "Wrong Credentials. You need to provide a RJ-45-to-DB-25 female DTE adapter if you want to connect the switch console port to a terminal. 3-meter StackPower cables and one 1. x 11/Oct/2019. The intent of this document is to help clear up some of the misunderstood configuration options. Procedure Step 1 Runsetup. For example, if you observe a spike to 100 percent every 30 minutes, you can conclude that something might be polling the switch on a regular schedule. Defines a standard IPv4 access list by using a source address and wildcard. 6) connect to the network by enabled 10GB interface. ws-c3850-48f-e datasheet, cisco catalyst c3850-48p switch layer 3 - 48 * 10/100/1000 ethernet poe+ ports - ip service, fast. If the master fails, the next highest priority will be the master. All the switches in the switch stack need to be running the same license level as the active switch. 31 MB) View with Adobe Reader on a variety of devices. 5. 3 at. Switch#. sh switch Switch/Stack Mac Address : c025. This will enable the member switch to join the stack successfully. In this example, the switches are stacked in a vertical rack or on a table. 36 MB) View with Adobe Reader on a variety of devicesBest Practice User Guide for the Catalyst 3850 and Catalyst 3650 Switch Series Note The configuration examples provided in this document begin in global configuration mode, unless noted otherwise. 3850-stack#. I was struggling with high CPU utilization problems happening on the distribution switch. WS-C3850-24S- S supports up to 1K VLANs and delivers comprehensive layer 2 switching and limited layer 3 capabilities by offering the feasible solution for access layer orI configured C3850-2 switch as stand-alone switch by erase config, reset switch to its factory by holding mode bottom 7 sec and issue command: no switch 2 provision ws-c3850-48t . All of them have read only mode on the flash for ROMMON and are unable to boot at all. Hi @roman. Download the new image from the TFTP server to the flash / USB on the switch. Management console port: RJ-45-to-DB9. 00SE. remaining Ports are down not providing power to AP's. 7. 99. 4 x 1GE. Show running-config. 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. I upgraded the firmware from 16. We have now found out that switch one of the two, is running constantly on 99% usage for core 4. CAT3850 switch has an. 3. I have already found out that the high core usage is only happening on switch 1. If you don't see "boot system switch all flash:XXXX. PoE is used by Catalyst 3650/3850 switches in order to provide power to external devices such as Wireless Access Points (APs), IP phones, and so on via the Ethernet cable that attaches them to. 00 (73% OFF) Buy Now 61: WS-C3850-48XS-F-E. 1 (0) 0 Helpful. This graph helps to formulate patterns. Switch specifications. To make your changes persistent over a reboot you need to copy the running configuration to the startup configuration with the 'copy run start command'. For 2960 series, there is previous post about it: Cisco Catalyst 2960X and 2960S Stacking Cisco Catalyst WS-C3850-48T-S and Components (Unboxed) Cisco Catalyst WS-C3850-48T-S and Components in the. WS-C3850-24XS-S Cisco Catalyst 3850 24 Port Switch JavaScript seems to be disabled in your browser. 2. Modelos admitidos. @robertkwild wrote:Same problem with our switch , WS-C3850-48T S/W 03. Table 11 UID/Beacon LED Indicator (Applies Only to the WS-C3850-12S, WS-C3850-24S , WS-C3850-12XS, and WS-C3850-24XS Switches) I do believe the mGig based switches should have this as well, but I need to cross check to keep myself honest. X. The Active switch is the one which is the current master of the stack. For example, on a Catalyst 3850 switch with 24 10/100/1000 ports and four small form-factor pluggable (SFP) module slots, port 3 is the Gigabit Ethernet 1/0/1 port, port 4 is the Gigabit Ethernet 1/0/2 port, and so forth. 2801 - Local Mac Address Mac persistency wait time: Indefinite H/W Current Switch# Role Mac Address Priority Version State ----- *1 Active 6c99. When we took a spare switch and. Guide d'installation matérielle du commutateur Catalyst 3850 (PDF - 6 MB) 17/Jul/2014. This means the . . This can also be seen in when stacks are configured in a half-ring setup. This switch with IP Base feature set can only stack with other Catalyst 3850 Series IP Base switches. Assign Initial Management Information • The following configurations should be performed in the same sequence in which they are listed here. Following the Quick Start Guide, I put in the power module, powered it on, and waited for it to complete POST. Neil Wurzel. Cisco Catalyst 3850 Series Switches also support full IEEE 802. better scalability. For the purposes of this documentation set, bias-free is defined as language that does. bin> new. C3850-NM-4-10G (four 10-Gigabit slots or four 1-Gigabit slots) The available configuration is based on which model NM you are using. Figures 1 through 4 show the Cisco Catalyst 3850 Series Switches. Figures 1 through 4 show the Cisco Catalyst 3850 Series Switches. $64,554. Model. xxxxx#sh int gi1/0/48 counters errors Port Align-Err FCS-Err Xmit-Err Rcv-Err UnderSize OutDiscards Gi1/0/48. Security Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) OL-30243-01 7 Using the Web Graphical User Interface Configuring the Switch Web GUI. 3-. Step 3. 2- switch# request platform software package install switch 1 file flash:cat3k_caa-universalk9. Note: For proper functionality, the switch must be at the firmware version shown in . Note: The process will be similar for stacks of 2, 3, 4,5,7,8 and 9. 53. 1 Allnetworkmodulesarehot-swappable. Cisco catalyst 3850 switch, a new industry’s first fixed, stackable GE switch that Cisco released earlier this year. The RJ-45 console port uses an 8-pin RJ-45 connection. The types of licenses available to order by duration are: Permanent licenses— For image-based licenses only. We use the switch to supply DHCP for the VLANs. The Active switch is the one which is the current master of the stack. 58, RELEASE SOFTWARE (P) STACKPROD uptime is 19 weeks, 6 days, 18 hours, 8 minutes. Note: 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. Cisco EnergyWise Cisco IOS Configuration Guide for Catalyst 3850 Switches, EnergyWise Version 2. This command is only valid if the current stack is running 3. Note: The process will be similar for stacks of 2,3,4,5,7,8 and 9 switches. The Cisco Catalyst 3850 Series Switch has two modes of operation: INSTALL and BUNDLE. You can mix the switches with different number of access ports (48, 24, and 12), different type of access ports (copper and fiber, PoE, and non-PoE-capable), and different network modules. conf. x (Catalyst 3850 Switches) Bias-Free Language. Step 2: Determine the CPU Queue that Causes the High CPU Usage Condition. access-list access-list-number {deny | permit} source source-wildcard [log] Example: Switch (config)# access-list 2 deny your_host. 3- boot. System-level (global) features that apply to all stack members Interface-level features for each stack member The active switch contains the saved and running configuration files for the switch stack. The example below, shows how to properly connect a stack of six 3850 switches, together with a power-stack connection example. Switch vendor Cisco Switch model Catalyst 3850 Switch firmware 03. Ethernet management port: RJ-45 connectors, 4-pair Cat-5 UTP cabling. 在将 . When you copy the . Price: $391. In Catalyst 4500/4000 and 6500/6000 series switches which run Cisco IOS. Best Practice User Guide for the Catalyst 3850 and Catalyst 3650 Switch Series Note The configuration examples provided in this document begin in global configuration mode, unless noted otherwise. You can alter the boot system parameters with the boot command. EX2. IP BaseWhat feature sets do the Cisco Catalyst 3850 switches support? A. Chapter Title. Updated:. The Cisco 3850 Series of switches is an industry-leading, enterprise-class series of access switches that offers superior performance, scalability, and reliability. Options. Cisco Catalyst 3850 Series Switches Data Sheets - Learn product details such as features and benefits, as well as hardware and software specifications. White Papers. It furnishes worked in remote regulator capacities with 40G remote throughput, uphold for 50 passageways and 2000 remote customers for every switch or stack, and backing for 802. 350 WAC. Position the module face up to install it in the module slot. Third, upgrading procedures and process. Catalyst 3850 24-port PoE switches. Table 1 shows the Quick Specs. First, you stated that you need to route between VLANs. switch: dir. Backed by the 90-day Amazon Renewed Guarantee. Chapter Title. Check IOS with “show version”. 5-meter cable. 7. Figure 1. C3850-NM-4-10G (four 10-Gigabit slots or four 1-Gigabit slots) The available configuration is based on which model NM you are using. 2. I changed to bundle mode and upgraded to 16. Examples of Auto-Advise Messages Auto-Upgrade Is Disabled and Incompatible Switch Attempting to Join: ExampleObviously if you are intending to find the equivalent of a single 3850 switch the cost of this option will not stack up. The last two right port LEDs on all switches in the stack should be green. 73 x 17. on 01-29-2019 12:39 AM. We got the dead member in C3850 stack switches Before add a new switch need to be done: >>Upgrade or downgrade the switch with same version of stack members. I found there are some caveats to the boot structure: Installed Boot ModeJust bought a 3850 12XS, updated to software to Denali 16. All you need is a USB stick that is recognised by the switch and a console connection. ISSU is supported only if both the switches in Stackwise Virtual are booted in install mode. Data Stack Cabling Configurations This is an example of a recommended configuration that uses the supplied 0. $189. 47 MB) PDF - This Chapter (2. From other small Cisco switches, one expects to use “mls qos vlan-based” on the physical ports. my plan to do the update : 1- upload the . X. I would like to know if the 3850 switches can become wireless. SPA. Hi Al, I am having an issue with a Cisco 3850 Catalyst switch, issue as below: - Current config register is 0x142 and have configured the config register to 0x102 but even after reload the new config register does not come in place. Most routers and switches by Cisco have default passwords of admin or cisco, and default IP addresses of 192. . Hi, on 2 WS-C3850-48T switches (stack of 4), software IOS-XE 03. 7) second switch C3850-1 which was master, intermediately stopped responding for pings. I upgraded the firmware from 16. UPS sizing for 3850. The 3850 Series offers up to 40G of wireless capacity per switch, support for up to 100 individual access points and 2000 wireless clients, and Stackwise-480 technology, allowing Cisco 3850 switches to. Book Title. System returned to ROM by SSO Switchover. When the fan is operating, a green LED is on in the top left corner of the fan. Lifewire / Tim Liedtke. reload Step 5. Priority 15 is the highest priority, and the highest priority will be the master. 06. Then boot. bin file. 02. 1a 23/Nov/2017. Cisco Catalyst 3850 Series Switches Figure 2. Log in to the switch through the console, and enter the upgrade command: 3. Catalyst 3850 Switch Hardware Installation Guide . Cisco Catalyst 3850 Series Switches - Learn product details such as features and benefits, as well as hardware and software specifications. View as List Grid. For cabling and power considerations that affect switch stacks, see the Catalyst 3850 Switch Hardware Installation Guide . Start copying new IOS universalk9- 07. The Cisco Catalyst 3850 Series Rack Mount Kit, C3850-RACK-KIT, is a professional-grade accessory meticulously designed to seamlessly integrate Cisco Catalyst 3850 Series switches into standard 19-inch racks. Configuring COAP Proxy Server. X. The Cisco Catalyst 3850 Series Switches are designed for power supplies that provide a single power voltage. When managing a device stack, connect the PC to the Ethernet management port on a. All switches ship with one of the five power supplies (350WAC, 715WAC, 750WAC, 1100WAC, or 440WDC)5. Step 1 : Connect your PC to the service port and configure an IPv4 address to use the same subnet as the switch. 3 at Power over Ethernet Plus (PoE+), modular and field replaceable network modules, redundant fans, and power supplies. Les clients ont jusqu'au 30 octobre 2020 pour commander les produits concernés. This switch with IP Base feature set can only stack with other Catalyst 3850 Series IP Base switches. Cisco Catalyst 3850 Series Switches Figure 2. 1. Its a standalone (no stack), see number of errors 638604 . The documentation set for this product strives to use bias-free language. Bundle mode: Bundle mode is where we boot the switch/stack using the . 47 MB) PDF - This Chapter (1. Models Description C3850-NM-4-10G Cisco 3850 Series Network Module C3850-NM-4-10G 4 x 10GE Network ModuleAll switches ship with one of the five power supplies (350WAC, 715WAC, 750WAC, 1100WAC, or 440WDC)5. I am trying to reset the password on a 3850 switch following the below procedure without success. VLAN Port Membership Modes. USB Type A-to-USB 5-Pin Mini-Type B Cable. The access-list. Figure 1. CleanAir Configuration Guide, Cisco IOS XE Release 3SE (Catalyst 3850 Switches) 16/Jun/2014; Lightweight Access Point Configuration Guide, Cisco IOS XE Release 3E. 0 KB) View. Customers with active service contracts will continue to receive support from the Cisco Technical AssistanceI have recently gotten a C3850-48U and got it reset to factory settings. 17 Get Discount: 62: WS-C3850-48XS-F-S. Hold the Mode button.