AIR-CAP3702I-Z-K9 AIR-AP3802I-Z-K9 . 11ac Wave 2. The AIR-CT5520-K9 and AIR-CT8540-K9 controller models are based on Cisco UCS server C series, C220 and C240 M4 respectively. These controller models have CIMC utility that can edit or monitor low-level physical parts such as power, memory, disks, fan, temperature, and provide remote console access to the controllers. The last day to order the affected product(s) is March 31, 2018. wireless. Customers with active service contracts will continue to receive support from the Cisco. 10 - Let me know if my above understanding is rightAs the industry’s most deployed controller, the Cisco 5500 Series Wireless Controller provides the highest performance, security, and scalability to support business communications today and in the future. The AIR-CT5520-K9 and AIR-CT8540-K9 controller models are based on Cisco UCS server C series, C220 and C240 M4 respectively. Software Version 8. AIR-CT5520-CA-K9. The last day to order the affected product(s) is April 26, 2015. Explore our database of over 20,000 parts & never miss a critical date again. 既存の 802. 3Com. Look at the supported features and make sure the new version. Series Release Date. These controller models have CIMC utility that can edit or monitor low-level physical parts such as power, memory, disks, fan, temperature, and provide remote console access to the controllers. Be the first to review this product. 11ac Wave 2. What is the latest stable firmware version of air-ct5520-k9 WLC. $4,049. Upgrade Your Wireless Network with 802. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. Today, APC by Schneider Electric has limited availability of spare parts available to support the APC. C1-AIR-CT5520-K9. Options. Cisco5520WirelessController w/rackMountng kit REMANUFACTURED. The AIR-CT5520-K9 and AIR-CT8540-K9 controller models are based on Cisco UCS server C series, C220 and C240 M4 respectively. 24Mb: November 30 2014 at 05:05: AIR-WLCM-K9-5-2-178-0. End-of-Sale and End-of-Life Announcement for the Cisco Webex Share and its accessories 01/Oct/2021. 83. We have 2 Gbps internet up-links for these wireless clients, we want to to get maximum download speed. Introduction. Cisco5520WirelessController w/rackMountng kit REMANUFACTURED. EOS/EOL Check; SN Check; Download; Product Catalog. LIC-CT5520-UPG. 9 or later /Tanpa Merek 5520 Wireless Controller [AIR-CT5520-K9] 43222640-PKM-004729415. Cisco Aironet 1832I Series Access Point AIR-AP1832I-H-K9. - 8. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown. aes: 85. These controller models have CIMC utility that can edit or monitor low-level physical parts such as power, memory, disks, fan, temperature, and provide remote console access to the controllers. 100 Flex APs/Site. 10 16/Jun/2023. Catalyst C9800-40 Wireless. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. 10 and also an upgrade of the CIMC firmware is required. Highlight key service provider features. Cisco 5520 Wireless Controller supporting 50 access points. Cisco announces the end-of-sale and end-of-life dates for the Cisco AireOS Virtual Wireless controller. These controller models have CIMC utility that can edit or monitor low-level physical parts such as power, memory, disks, fan, temperature, and provide remote console access to the controllers. Table 1 describes the end-of-life milestones, definitions, and dates. networking, the Cisco. Explore our database of over 20,000 parts & never miss a critical date again. Date. 40 Gbps Throughput. 11n access points. 11a/g/n FCC Cfg5508-50 20AP WCS Demo Promo ends 8/1/10 Cisco announces the end-of-sale and end-of-life dates for the Cisco Secure Network Server 3615, 3655 and 3695. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. With expert remote engineers, onsite. Cisco ONE - 5520 Wireless Controller w/rack mounting kit. Only 2 left in stock - order soon. 5->8. 61 $30,141. Page 2 of 12 Contents Product overview 3 Features and benefits 3Cisco ® ® ® ® ®. Table 1 describes the end-of-life milestones, definitions, and. The last date to order the product through Cisco point-of-sale mechanisms. Explore our database of over 20,000 parts & never miss a. Solved: We are seeing Bulk status as "in progress" for more than a day. Weight (Approximate) 30 lb. The last day to order the affected product(s) is January 31, 2023. It won't work. Borderless NetworkingHi Nestor, Under Static WEP parameters, choose the WEP key size and key index. It is designed for medium to large enterprise environments and provides centralized control, management, and troubleshooting for wireless networks. It also enables a total aggregate. 11a/n (5-GHz) standards. End-of-Sale Date. Cisco announces the end-of-sale and end-of-life dates for the Cisco Aironet 1530 Series Access Points. 7, Firepower Management Center (FMC) 6. The last day to order the affected product(s) is August 1, 2022. Cisco's End-of-Life Policy. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. It offers flexibility to support multiple deployment modes in the same controller: for example, centralized mode for campus. The last day to order the affected product(s) is April 18, 2018. 01-12-2022 05:50 AM. Request a Quote. 0 is running. will this AIR-AP3802I-E-K9, AP model be reaching EOL anytime soon? If yes, please kindly assist with its replacement options?Cisco EOL Products; Cisco Training; 3rd Party Solutions. Please call or email us with your request. This Paper. Collapse. x Release EoL 31/Mar/2020. As a Cisco has announced EOSL on all. Additional resources. also pack AIR-CT5520-50-K9 with second box before shipping. 1 kg, Dimensions (WxDxH): 440 x 539 x 44. Cisco announces the end-of-sale and end-of-life dates for the Cisco Aironet Access Point Module for 802. It also describes the various packaging structures and configurations. I have a 5520 WLC with a defective HD in need of replacement. com // 800-409-3132. aes 的升级进程， 建议重启再升级， 那我们按照控制器的提示重启了5508 再升级新的IOS. Weight (Approximate) 30 lb. 2000 Site Tags. Cisco 5520 Wireless Controller supporting 50 APs w/rack kit. #capwap ap ip address <IP ADDR FROM AP> <NETMASK IP ADDR FROM AP>. have the AIR-CT5520-K9-8-10-162-0. Step 3 If DHCP is not available, use the command imm address <ip address> <net mask> <gateway ip>. 11ax) is Cisco Catalyst 9100 series access point which also needs to be running software version 8. WLC AIR-CT5520-K9 elecommeng. Cisco announces the end-of-life for the Cisco Wireless Software Version 8. 4200G 12-Port, 4200G 24-Port, 4500 26-Port, 6080, Baseline 2226-SFP Plus, Baseline 2250-SFP Plus, Baseline 2426 PWR Plus, Baseline 2920-SFP Plus, Baseline 2928-HPWR Plus, Baseline 2928-PWR Plus, Baseline 2928-SFP Plus, Baseline 2952-SFP Plus, Baseline S2226, Baseline S2226 Plus, Baseline S2250. Find accurate end of life & end of service life dates for Cisco AIR-CT5520-CA-K9 hardware. 31-OCT-2022 Details. Two side with same GLC-LH-SMD=. Cisco AIR-CT5520-50-K9 5520 Wireless Controller 50 Access Points. Cisco Aironet 1850 Series Access Points - Find out why a Cisco product has reached its end of life, what product upgrade and substitution options are available, and when these changes will take effect. AIR-CT5520-K9-RF. Cisco5520WirelessController w/rackMountng kit REMANUFACTURED. com. Eol transceiver to replacement model PDF. Cisco announces the end-of-sale and end-of-life dates for the Cisco Aironet 3600 Series. 2. The last day to order the affected product(s) is August 25, 2017. 11a/b/g/n/ac Ideal For Midsize or large enterprises that require advanced features Max Data Rate 5GHz 1. Catalyst C9800-40 Wireless Controller-EDU-CT5520-K9 Overview EOL12239 - Amended Cisco announces the end-of-sale and end-of-life dates for the Cisco 5508 Wireless Controller. The last day to order the affected product(s) is April 10, 2017. Table 2 lists the product part numbers affected by this announcement. End-of-Sale and End-of-Life Announcement for the Cisco Adaptive Security Appliance (ASA) Software Releases 9. The AP 1562E has 4 external antenna ports and contains a 2. 2->8. End-of-life milestones Table 1. Cisco 5520 Wireless LAN Controller Deployment Guide Cisco5520WirelessLANControllerDeploymentGuide4 Introduction 4 Prerequisites 4 ProductOverview 4. Cisco announces the end-of-sale and end-of life dates for the Cisco Ultra-M Hardware. End-of-Sale and End-of-Life Announcement for the Cisco 17. AIR-CT5520-K9. Table 2 lists the product part numbers affected by this announcement. End-of-Sale and End-of-Life Announcement for. All rights reserved. 10 - Let me know if my above understanding is right . 2. We have few dozens APs trying to register to WLC , The APs are getting DHCPs, default Gateways, The WLC is located at our DC, connectivity across the network is fine, I can ping the WLC from the LAN network, When I debug capwapp on the WLC i see no attempts from the APs trying to. LIC-CT5520-1A -- These are 464 adder licenses. 86. Make sure all your AP’s are supported by the new AireOS version. These new appliances offer better performance and come up in a better price also. End-of-Support Date: 2018-09-30. Top level SKU for 5520 AP adder licenses — LIC-CT5520-1A. The Cisco Aironet 1552C/1552CU Outdoor Mesh Access Points are dual-radio systems with DOCSIS 3. Table 1. Load on this wireless network is not much, there are approx 150 clients and on each access point there are not more then 20 client and approx 5 Ghz. 34Mb: November 28 2014 at 04:16: AIR-CT2500-K9-7-2-103-0. 永久ライセンス. Cisco AIR-CT5520-CA-K9 buy now refurbished & new items top prices purchase on account individual offers, consulting & services. Access Point: AIR-AP3802E-E-K9 . 【 ANBINHNET ™ 】 Phân Phối Cisco Wireless Controller 5500 AIR-CT5520-K9 For Up To 1500 Access Point Chính Hãng Giá Tốt tại ⭐ Hà Nội ⭐ Sài Gòn Đủ CO CQ BH 12 ThángCisco announces the end-of-sale and end-of-life dates for the Cisco Catalyst 3560V2 and 3750V2 Switches. End-of-Sale and End-of-Life Announcement for the Cisco ISE Express - ISE virtual machine + 150 Base Licenses 07/Aug/2019. The issue is related to reading the system info information from the ssh console. Cisco Aironet 3800 Series Access Points - Find out why a Cisco product has reached its end of life, what product upgrade and substitution options are available, and when these changes will take effect. In response to osamaps2. Since these are end of life I can get a new intel drive but I cannot find any information on the installation of the system. End-of-Life Announcement Date. 6 seems stable since past few months. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. Cisco announces the end-of-sale and end-of-life dates for the Select Cisco 891 and 892 Integrated Services Routers. N+1 HA Functionality with AIR-CT5520-50-K9 & AIR-CT5520-K9(HA SKU) That HA functionality will be same as 5508 WLC . 0 connectors. Enterprise Certifications Community. Download the datasheet of Cisco AIR-CT5508-50-K9. End-of-Support Date. Cisco announces the end-of-sale and end-of life dates for the Cisco 3365 Mobility Services Engine. Ship: Call for next available delivery. Cisco 5520 Wireless Controller upgrade. Product Type: Network Module. Please purchase two 5520 WLCs and 500 Access Point licenses with each 5520. (305m) of altitude above sea level Appliance nonoperating: -40° to 149°F (-40° to 65°C). The Cisco 5520 Wireless Controller, optimized for 802. If DHCP is not available, use the command imm address <ip address> <net mask> <gateway ip>. 20. Two Type A 3. 9393 Are you in EU? Call: +44 1782 576800. Model. Please note that, for platform-specific fixes, the End of Software Maintenance / End of Vulnerability/Security dates given in each platform’s EoLA supersede the 8. Find accurate end of life & end of service life dates for Cisco C1-AIR-CT5508-K9 hardware. Contrôleur sans fil gamme Cisco 5508 pour 500 points d'accès max. Condition : new. This popular UPS and Cooling combination was discontinued by the manufacturer several years ago. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. Beginner In response to ammahend. 11ax) with software version 8. Note:- The key size can be either 40 bits or 104 bits. The AIR-CT5520-K9 Cisco 5520 Wireless LAN Controller provides a variety of monitoring and troubleshooting tools that can help network administrators manage and troubleshoot wireless network issues. EOL11254. Cisco AIR-CT5520-K9 5520 Wireless Controller. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. The AIR-CT5520-K9 and AIR-CT8540-K9 controller models are based on Cisco UCS server C series, C220 and C240 M4 respectively. AIR-CONSADPT=. I have this problem too. Free PDF of Cisco AIR-CT5508-50-K9. Step 1 Connect the CIMC cable to the 10/100/1000 port in base T. With "Cisco ONE" the secondary unit does not need to have any license at all,. Marketing Information. 04-25-2016 12:20 PM. View Cisco air-ap1562i-e-k9 price and check specs at router-switch. Cisco5520WirelessController w/rackMountng kit REMANUFACTURED. AIR-CT5508-50-K9: 5508 Series Controller for up to 50 APs: AIR-CT3504-K9: Cisco 3504 Wireless Controller: C1-AIR-CT5508-K9: Cisco ONE - 5500 series WLAN Controller w/ 0 AP lics: C1-AIR-CT5520-K9: Cisco ONE - 5520 Wireless Controller w/rack mounting kit: AIR-CT50-1140A20: 802. 11 a/b/g/n Outdoor Access Points ; Detailed Channels and Maximum Power Settings for Cisco 1530 Series Outdoor Access Points (XLSX - 738 KB) Getting Started Guide Cisco Aironet 1530 Series Outdoor Access PointsThe Cisco Mobility Express wireless network solution comprises of at least one 802. With features like end-to-end security and fault tolerance, a new surplus or used AIR-CT5520-K9 wireless controller from Cisco is optimized to enable 802. aes: 91. Software Download is the webpage where you can find and download the latest software releases for the Cisco 5520 Wireless Controller (AIR-CT5520-K9), a scalable and flexible platform that supports up to 1500 access points and 20,000 clients. I read that it's better to do it from 8. This item: Cisco C1-AIR-CT5520-K9 ONE 5520 Wireless Controller. Can the 5520 be converted back to a UCS C-Series or is the Firmware Custom and it can only load the WLC firmware?If you need a specific firmware or series relating to C1-AIR-CT5520-K9, we probably have it. Air temperature: Appliance operating: 41° to 95°F (5° to 35°C), derate the maximum temperature by 1. The hierarchical wireless network design through the new converged access mode of deployment offers unparalleled scalability and future-proofs Wi-Fi networks. C1-AIR-CT5520-K9. Cisco 5520. These controller models have CIMC utility that can edit or monitor low-level physical parts such as power, memory, disks, fan, temperature, and provide remote console access to the controllers. 50 - Ursprünglicher Preis €2,356. 01-29-2021 03:28 PM. We've got a 5520 which has a damaged RP port, the device is currently a spare in our lab and we're wondering what we can do with the device. 5520 has less than one year left before EoS. Please troubleshoot this problem. 5 EOL dates. AIR-CT5520-K9-RF. Cisco5520WirelessLANControllerDeploymentGuide Cisco5520WirelessLANControllerDeploymentGuide 3 Introduction 3 Prerequisites 3. 18-MAY-2009. Step 2 Type Enable to go to privileged execution mode. $56,572. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. 3. It's easy to migrate to the Cisco Catalyst 9100 Family of Access Points, which offer greater performance and flexibility. The last day to order the affected product(s) is November 13, 2020. When upgrading a Cisco WLC follow these guidelines: Read the release notes and find the software for your needs. C1-AIR-CT5520-K9. 製品の概要. One Hour. Series: 5500Product. It offers flexibility to support multiple deployment modes in the same controller—a centralized mode for campus environments, Cisco FlexConnect mode for lean branches managed over the WAN, and a mesh (bridge) mode for deployments in which. Availability: Temporarily Out-of-Stock. Software for support of -B Domain Access Points. Cisco announces the end-of-sale and end-of-life dates for the Cisco ASA 5512-X and ASA 5515-X. - 8. End-of-Sale and End-of-Life Announcement for the Cisco 5508 Wireless Controller 14/Aug/2020. 66Mb: November 30 2014 at 08:06: AIR-CT2500-K9-7-2-110-0. The last day to order the affected product(s) is May 13, 2019. Supported Models: Cisco 5508 and 5520 Wireless Controllers. First of all you need to establish a console connection with a Cisco console (serial) cable. View Product. The Cisco 5520 AIR-CT5520-K9 Network Management Device is a highly scalable, service-rich, resilient, and flexible platform that is ideal for medium-sized to large. access points. Cisco announces the end-of-sale and end-of-life dates for the Cisco End-of-Sale and End-of-Life Announcement of 896 and 897 VDSL2/ADSL2+ Routers. It offers flexibility to support multiple deployment modes in the same controller: for example, centralized mode for campus, Cisco FlexConnect trade; mode for. Explore our database of over 20,000 parts &. In response to George Stefanick. Est. As part of the Cisco Unified Access Solution, the 5520 is optimized for the next generation of wireless networks, 802. The store will not work correctly in the case when cookies are disabled. Cisco AIR-CT5520-K9 Wireless Controller; Features; Content. con-snt-airt5550. Explore our database of over 20,000 parts & never miss a critical date again. The last day to order the affected product(s) is December 9, 2017. Support. Get a Quote. End-of-Sale Date: 2013-01-11 . 5500 Series Controller offers improved mobility and prepares the. Table 1 describes the end-of-life milestones, definitions, and. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. 50 AP 対応の Cisco 5520 ワイヤレス コントローラ w/ラック キット. End-of-Sale and End-of-Life Announcement for the Cisco 886 and 898 4G LTE Routers 06/Jul/2020. 103. 2600 Series sustains reliable connections at higher speeds. 3 code is effectively end of life so you should be looking to run 8. EOS/EOL Check; SN Check; Download; Product Catalog. Specification. It is recommended to upgrade the wlc to 8. End-of-Sale and End-of-Life Announcement for the Cisco Aironet 1810 Series Indoor Access Points. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. Get fast processing and low pricing on the Cisco LIC-CT5520-1A 5520 Wireless LAN Controller license at Hummingbird Networks- trusted Cisco partner. EOS/EOL Check; SN Check; Download; Product Catalog. AIR-CT5520-K9. For a quote or to request more information, please complete the form. No patches or maintenance releases will be provided for Cisco Wireless Software Versions 8. Cisco announces the end-of-sale and end-of-life dates for the Cisco ATA 190 Analog Telephone Adapter. Statement of Cisco TAC Support for Non-Cisco (Third Party) Antennas. The replacement for the 5520 (and can support 2000 APs) is the Catalyst 9800-40. The last day to order the affected product(s) is July 29, 2019. AIR-CT2500-K9-7-0-240-0. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. Our Story; Leadership Team; Blog; Contact; [email protected]. See Product Migration Options section for details. The AIR-CT5520-50-K9 is a Cisco 10 Gigabits Wireless LAN Controller. The last day to order the affected product(s) is August 25, 2017. $89. View Product. 4 03/Apr/2018. Cisco announces the end-of-life for the Cisco Wireless Software Version. Details. Cisco announces the end-of-sale and end-of-life dates for the Cisco North American DOCSIS and External Antenna, AC Power Model versions of Cisco Aironet 1570 Series Access Points. End-of-Life Announcement for 7510 Wireless Controller . The AIR-CT5520-K9 and AIR-CT8540-K9 controller models are based on Cisco UCS server C series, C220 and C240 M4 respectively. EOS/EOL Check; SN Check; Download; Product Catalog. Cisco Hardware; C891FJ-K9; Search our stock for refurbished used Cisco. The last day to order the affected product(s) is July 31, 2023. quantity: Overview Technical Specifications Why Choose Us to Buy The Cisco 5520 Wireless Controller provides centralized control, management, and troubleshooting for high-scale deployments in service provider and large campus deployments. business for the next wave of mobile devices and applications. The last day to order the affected product (s) is. Hello, I am in trouble with WLC Controller 5520. aes code but do I need to download any other file to re-image the new drive? End-of-Life Milestones and Dates. Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; Permalink; Print; Report Inappropriate Content 02-14-2022 12:43 AM. 166 to 8. 11ac. End-of-Sale and End-of-Life Announcement for the Cisco Firepower Threat Defense (FTD) 6. End-of-Support Date: 2018-01-31 . 2/2. Cisco Systems 5520 Wireless Controller AIR-CT5520-50-K9 is sealed in cisco original box. 44Mb: November 30 2014 at 07:44: AIR-CT2500-K9-7-2-111-3. For a quote or to request more information, please complete the form. Leo Laohoo. Part Number: AIR-CT5520-50-K9Manufacturer. -Scott. The Cisco 5520 Wireless Controller, optimized for 802. MS350-24P-HW Price MS350 Series Stackable Access Switches. Customers with active service contracts will continue to receive support from the Cisco Technical Assistance Center (TAC) as shown in Table 1 of the EoL bulletin. As part of the Cisco Unified Access Solution, the 5520 is optimized for the next generation of wireless networks, 802. C9800-L-F-K9 C9800-L-C-K9 Cisco Catalyst Embedded Wireless Controllers on Catalyst 9100 Series Access Points (C91xxAXx - EWC-x) - EDU-CT3504-K9 Cisco 3504 Wireless Controller for US K12 See Product Migration Options section for details. Borderless NetworkingAIR-AP1562E-x-K9. Explore our database of over 20,000 parts & never miss a critical date again. Find accurate end of life & end of service life dates for Cisco AIR-CT5520-K9 hardware. End-of-Sale and End-of-Life Announcement for the Cisco ASA 5500 Content Security and Control Licenses 16/Mar/2015. Cisco 5520 Wireless Controller w/rack mounting kit Cisco announces the end-of-sale and end-of life dates for the Cisco Intrusion Prevention System. English. The last day to order the affected product(s) is June 4, 2021. Borderless Networking Switches > Routers > Security >. Step 4 Complete the remaining steps to generate the. こんにちは。 AIR-CT5520-K9コントローラにC9120AXI-Qは参加可能でしょうか？ コントローラのファームを上げるとか、条件があればお助けください。 無理なら無理で。お願いします。Hi 5520 is the platform name , k9 is the crypto image for encryption it can come sometimes with or without k9 , that's same product same specs , 1500 aps supported or are you saying something else ? the doc I provided is for air-ct5520-k9 just with new version 8. I'm not an expert on what support options they can sell but I think hardware cover (RMA) always includes software support although you can get software support without hardware. 0 (8x4 HFC) compliant cable modem for power and backhaul. Have we any integration possibility with Wireless Controller C1-AIR-CT5520-K9 + Access Points AIR-AP1832I-Z-K9 using Cisco Connected Mobile Experiences and Cisco Identity Services Engine? It would be nice any integration, but have all networks viewed through the Meraki Dashboard will be perfect. Table 1 describes the end-of-life milestones, definitions, and. 08-28-2021 01:44 AM. Depth. Explore our database of over 20,000 parts & never miss a critical date again. 02. For the 3700, do not bother doing pre-download. $23,552. It offers flexibility to support multiple deploymentAdd to Cart. 11ac Wireless LAN Controller - 2. Table 1 describes the end-of-life milestones, definitions, and dates for the. com. 288. C1-AIR-CT5520-K9. For customers with active and paid service and support contracts, support will be available under the terms and conditions of customers' service contract. High Performance.