One rack unit (1U) occupies 1. The Cisco R Series rack conforms to these requirements. All units include a 6-foot (1. 4 cm) For a one and a half RU (rack unit) switch, 2. Cisco WS-C6509-E-RACK Catalyst 6509-E 19 Inch Rack Mount Kit units which are shipped internationally have a mandatory 4-10 business day security holding period between payment being received. C9606-SHELF-KIT= Cisco Catalyst 9600 Series 6 slot chassis. • Center Rack-Mounting a Catalyst 6509 and Catalyst 6509-E Switch Chassis • Center Rack-Mounting a Catalyst 6513 Switch Chassis • Obtaining Documentation and Submitting a Service Request Overview. 72 in. Descripción general de las especificaciones. Since you are using redundant mode, you can swap them out one at a time, so you don't have to power down the unit. But I cannot find it. The bracket with keyhole cutouts should be at an. Rear cable access for cable management. Cisco RP Series Power Distribution Units. Power supply—Front to back. Cisco DNA Software for Wireless. Serie: Switches Cisco Catalyst de la serie 6500: Tipo de producto:. To help with cable management, you might want to allow additional space in the rack above and below the chassis to make it easier. To prevent bodily injury when mounting or servicing this unit in a rack. NF2K-113C-C42 Cisco Catalyst 6506, 6509 and 6513 switches and the MDS 9509 director 480 (217. The Future Is 40 Gigabit Ethernet White Paper (PDF - 2 MB) Virtual Private LAN Service on Cisco Catalyst 6500 Supervisor Engine 2T. 19" mounting EIA tapped 10-32 mounting rails. Catalyst 6509-V-E Switch:제품 사양, 문서, 다운로드, Visio 스텐실, 제품 이미지 및 커뮤니티 콘텐츠에 액세스합니다. For a two RU (rack unit) switch, 3. 4 cm 4 RU 4 RU 12 RU 12 RU 15 RU 15 RU 20 RU 21 RU 20 RU Cisco Catalyst 6500 Series Chassis Weights. 25 lb (14. A fabricated metal rack shelf brackets crossbar to fix the shelf brackets. Rack units (RU) 7RU 10RU 11RU 14RU Chassis weight (with fan tray) 32. Before rack-mounting the chassis, ensure that the equipment rack complies with all requirements and guidelines. Catalyst 9600X fiber line cards. The guides are T-shaped with openings that align with each rack-mount unit on the rack and attach to the front of the cabinet frame. Verify that the ambient temperature remains between 32 to 104° F (0 to 40° C), taking into account the elevated temperatures when installed in a rack or enclosed space. WS-C6509-NEB-A. Desktops. x solution integrates various Cisco and third-party products that are. 63 (6. A 2600 router is 1U tall, as well as a standard 3560 switch. When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at the bottom of the rack. Telemetry. 45 MM) in height, although many manufacturers will make their equipment slightly smaller than this to ease installation into racks where things were. (26. (4. It offers such benefits as a cloud-based SaaS platform for managing. This security policy is to allow funds to fully clear our bank account. comBias-Free Language. 0E and IOS 15. Catalyst 6509-E Switch: Access product specifications, documents, downloads, Visio stencils, product images, and community. Songton, Korea. (45. Cisco Catalyst 6500 Series Services SPA Carrier-600 16/Sep/2008. 56 Tbps of bandwidth and over 720 million packets per second (mpps) across thirty-two 40-Gbps Enhanced QSFP+ ports. The core of our network is a double Cisco 6509 in VSS mode. View all posts by duncanbowring 4 Comments srubu says: March 6, 2012 at 11:53. For four-post EIA racks, this is the distance between the two front rails. 2 (1)E 10-May-2015. 2"D:. --. Integrated PDU trays allow quick toolless mounting of 0-rack-unit (0RU) PDUs. Table 1. The center rack-mount kits are installed differently depending on the chassis. Chapter Title. 75 inches (45. The kit contains the following items: Selecting the Proper Rack-Enclosure or Cabinet. 4 cm) For a one and a half RU (rack unit) switch, 2. The Cisco Catalyst 6509 Switch is now obsolete (past End-of-Life and End-of-Support status). 3 cm). Buy Cisco Network Accessory WS-C6509-RACK. Home WS-C6509-E-RACK-RF Notes: Items purchased through Cisco Outlet are refurbished. More Brands. The Cisco Catalyst 6509-E supports Cisco Catalyst 6500 Series end-to-end operational consistency benefits. Cisco Employee. Wilson B. (A label near the power inlet indicates the correct voltage, frequency [only AC-powered systems], current draw. The documentation set for this product strives to use bias-free language. Rack Mount : International Protection Rating IP54, IP65 : Number of Positions 9 : Connectivity Protocol X-10 : Unit Count 1. 6 x 43. 10 GE ports 130 hot swappable power yes maximum forwarding performance ipv4 mops max 40 GE ports 32 max 1 GE ports 387 rack units 14 dc internal 4000 ports 16 included catalyst 6500 series chassis hot. Cisco Secure Firewall 4100 Series supports flow-offloading,. 3ba standard,. The depth of a four-post rack must be 24 to 32 inches (61. Orders for this Cisco KIT-MNTG-09 unit which qualify for Free Super-Saver Shipping are shipped at our discretion via the lowest cost method. o Duties: Network administrator for USAF and bi-lateral network. Shelf support unit also available. A “U” or rack unit is a measurement of the height of a piece of computer or network gear that is designed to fit into a standard 19″ or 23″ rack. 50 lb (20. Cisco Firepower 9300 Hardware Installation Guide. Each U is 1. Left tool-less rack mount rail. Genrally Jumbo frames feature can be enabled on the Catalyst 6500 to improve server performance is jumbo frames. Overview. pdf), Text File (. [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. Storage TemperatureRack Units (RU) 4 5 11 14 21 19 Weight Chassis Only (lbs) 16A at 100 VAC 7A at 240 VAC 16A at 200 VAC Two 12A at 100 VAC Or Two 12A. Other Languages. Cisco Nexus 7018 – AR3340 Enclosure and AR7742 Side Airflow Duct Kit. 06 x 17. • Cisco XENPAK-10GB-SR: Supports a link length of 26m on standard FDDI grade MMF. 1 x 55. Provides a better way to distribute power. Login. Specification Description AC-input type. 6509 and 6509-E* Catalyst 6509-NEB and 6509-NEB-A Catalyst 6513Side-to-rear airflow increases the system density in a seven-rack-unit (7RU) footprint, optimizing the use of rack space. 27 MB) PDF - This Chapter (0. 4 cm) The distance between the outside face of the front mounting rail and the outside face of the back mounting rail should be. 30-port 100G/40G (QSFP28) and 2-port 400G/200G/100G. , 4. 1 x 55. Cisco Catalyst Instant Access Solution White Paper. 75 inches (4. 75 inches tall. 11. 2" Weight (Approximate). (96. Table 1. 75 inches (4. Up to four Cisco UCS X410c Compute Nodes. MSRP: $233. 25 inches (13. 3 cm) equipment rack with two unobstructed outer posts, with a nominal depth (between the front and rear mounting posts) of 19. My experience extends to Cat 19, 29, 35 range- this is a daunting beast! Anyway- I can get interfaces set up with addresses, etc, but cant get anything to pass across them ,ie a ping form one host to another. The depth of the rack, measured between the front- and rear-mounting strips, must be at least 19. 0 cm) if the rear of the chassis is not attached to the rack. Chapter Title. 95-ETN-6509CVK42-ND. The minimum vertical rack space per Cisco UCS 64108 fabric interconnect must be two RUs (rack units), equal to 3. Cisco Nexus 9396PX ACI-Mode Switch Hardware Installation Guide . 45 cm rack units of vertical rack space. 07 MB) View with Adobe Reader on a variety of devices. Rack Specifications. Rack Specifications. Hi, I am looking for the power consumption of Cisco 6509 switch, it has two powers supplies of 3000W and configured to be redundant so looks like it can use 2900Watts but I would like to know if this value is per hour? appreciate any advice on this - thanks. What might be the cause? I often get this issue. Cisco Firepower 9300 Series appliances. PDF - Complete Book (3. 4 cm). 11. 68 cm) For a two RU (rack unit) switch, 3. The Non-Volatile Memory express (NVMe)-ready. 10RU . Field Replaceable Units; Cisco ASR 9010 Router The Cisco ASR 9010 Router chassis is centered around a redundant pair of RSP cards, along with eight line cards. The Cisco Catalyst 6506-E and Catalyst 6509-E support more than 4000 watts (W) power and higher per slot. 1 cm) if the rear of the switch is not attached to the rack. At the end of each server row there is a distribution switch (3750 or 6509). 12-24x0. WS-C6509-V-E-FAN= Cisco Catalyst 6509 Vertical Enhanced Chassis Fan Tray Spare WS-C6513-E Cisco Catalyst 6513 Enhanced ChassisRack units (RU 4) 10 RU. switch 1 priority 110. Operating— 0. Identify marketplace opportunities, prospect and. 10-27-2009 07:03 PM. Ratings BreakoutCisco Legacy Products; Network Management; Optical Networking; Routers; Security & VPN; Storage Networking; Switches; 2500 Connected Grid Switch; 6400 Access Concentrator; BPX 8600 Multiservice Switch; Catalyst 2350 Switch; Catalyst 2360 Switch; Catalyst 2900 LRE Switch; Catalyst 2900 Switch; Catalyst 2940 Switch; Catalyst 2950. Cisco+ (as-a-service) Cisco buying programs. Two rear mounting brackets are provided for mounting the Cisco ASR 9010 Router in a 4-post rack. - De-activate BGP and OSPF (old 6509-E) and activate BGP and OSPF on the new 6513-E . 68 cm). 7 x 46. (1) Forinet 600, (1) Cisco Meraki MX100 **PLEASE NOTE: Award of winning bid is being held subject to lot #1**We sell Cisco WS-C6509-E-RACK Catalyst 6509-E 19 Inch Rack Mount Kit at great prices and offer a full warranty on the Cisco products we sell. 9 kg). Posted by Whoolly on Jun 13th, 2014 at 10:05 AM. Rack Units. S from harddiskdirect. The Future Is 40 Gigabit Ethernet White Paper (PDF - 2 MB) Virtual Private LAN Service on Cisco Catalyst 6500 Supervisor Engine 2T. Chapter Title. (45. The Cisco VMDC 2. This unit should be mounted at the bottom of the rack if it is the only. Cisco RP-Series PDU models cost effectively and efficiently distribute power to up to 24 outlets. Buy WS-C6509-NEB-A - Cisco Catalyst 6500 Series WS-C6509-E 9 x Expansion Slots 14U Rack-mountable Layer 3 Managed Network Switch Chassis with fast shipping across U. 3 cm) The width between the rack-mounting rails must be at least 17. Horizontal or vertical equipment mounting. 00. WS-C6509-V-E= Cisco Catalyst 6509 Vertical Enhanced Chassis Spare Standard Rack Mount (With or without shelf brackets)—Right to left. Figure 1 shows a converged end-to-end IP network from the data center to the home and depicts the place in the network. The Future Is 40 Gigabit Ethernet White Paper (PDF - 2 MB) Virtual Private LAN Service on Cisco Catalyst 6500 Supervisor Engine 2T. To prevent bodily injury when mounting or servicing this unit in a rack, you must take special precautions to ensure. Chapter 3 Installing the Switch Installing the Cable Management System (Catalyst 6509-NEB-A Switch Only) Replacing the Cable Guide To replace the cable guides on the cable management system, perform these steps: Step 1 Loosen the two captive installation screws on the front panel. Catalyst 6509-E Switch: 제품 사양, 문서, 다운로드, Visio 스텐실, 제품 이미지 및 커뮤니티 콘텐츠에 액세스합니다. IT Pro Reviews of 6509-E Switch Chassis Subscribe Write a review. Network switch equipment typically sits at the top and back portion of the server rack. 5/5 G/s BASE-T) to go beyond 1 Gb/s with existing Cat5e and Cat6 IEEE 802. Manufacturers of rack mount equipment design their products based on how many RUs that the equipment occupies in the server rack, which is specified as 1U, 2U, 3U, and so on. 0"W x 15. 75 in. End-of-Sale and End-of-Life Announcement for the Cisco Catalyst 6506-E, Catalyst 6509-E, Catalyst 6509-V-E, Catalyst 6513-E, VS-S2T-10G, VS-S2T-10G-XL, Bundles & Accessories. Maximum forwarding performance (IPv4) 510 Mpps . The Cisco Catalyst 9800-40 Wireless Controller can be installed with both front or rear rack-mount brackets. Designed for agility and versatility, CCNA validates that. In addition to the requirements listed in the General Requirements for Cabinets and Racks section, perforated cabinets with front-to-back airflow must meet the following requirements: . This enables customers to build robust and scalable high-speed fabrics that can support several thousands of high-speed access ports. !! The show modules I was not able to get it. The last 8 ports marked in green are capable of wire-rate. Cisco IOS 12. 10 117806: Jul 30 14:32:16 MSK: %LINEPROTO-5-UPDOWN: Line protocol on Interface. 75 inches (93. 47 MB) PDF - This Chapter (1. 4 cm) For a one and a half RU (rack unit) switch, 2. Cisco HP / HPE Dell Fortinet Juniper. Catalyst 4500 Series Switch Software Configuration Guide, Release IOE XE 3. 3bz (2. module 9 inlet temperature: 26C. We are ordering several Cisco Catalyst 6509s. Hello, I have a problem with VSS in the 6500, when the switch 1 is active, probably a few months will switchover to switch 2 and switch 1 reload. Install and Upgrade Guides. See the Catalyst 3850 Switch Hardware Installation Guide for instructions. Data Security; Recyling; Valuation; Value Recovery; Products . Distributor Product SKU Stock Updated Price. 3bz (2. The Catalyst 6509 and Catalyst 6509-E switch chassis are designed to be installed in a standard 19-inch rack, either open or enclosed. 68 cm). Duct kit directs cold air into intake and isolates hot air 2. (48. Cisco UPOE with 60W power per port in 1 Rack Unit (RU) form factor IEEE 802. 8 cm). Download the PDF to find out how the UCS. com. Password. - Now plug out the cables from the second 6509-E and get it out of the rack - Build the 6513 into the rack - Connect it to the other 6513 with a trunk. Cable Management Guidelines. Cisco Catalyst 6500 Series Virtual Switching System. Cisco 6509 Installation Guide - Page 30 - manualowl. 00. 8 26-Feb-2015. fan-tray 1 mode: Restricted-power. Deeply inset PDU trays reduce PDU interference and improve the serviceability of Cisco UCS servers. Serie: Cisco Catalyst 6500 Series-switches:. Maximum. 8-meter) electrical power cord. ODF Distribution Unit; ZTE Optical Transport Network. A restricted access area can be. 6 cm) of vertical rack space. Wathing the show environment output I see the VTTs to be high. Conditions may vary from the visual depictions on the site. Seven chassis fit into a commonly used 42 RU rack, and therefore will fit into an ETSI 45. Cisco IOS 12. A typical server rack is 42 RU or 42 U in height. Availability:. End-of-Support Date: 2011-11-01. Max 10-100-1000 ports. For more product information, visit the. 75 inches (4. E-Series (requires E-Series chassis) and classic . Cisco RP Series PDU models cost effectively and efficiently distribute power to up to 24 outlets. 23-inch Rack Mount. Catalyst 6500 9-slot chassis (NEBS), 21RU, no PS, no Fan Tray. WS-C6509-E-RACK from CISCO 2-Year Warranty - CATALYST 6509-E RACK MOUNT KIT. Contact Panduit Corporation for further information on this rack. Cisco Catalyst 6509-E - switch - desktop, rack-mountable. This Cisco Switch Enclosures can house the Nexus 7018, MDS 9509, MDS 9513, Catalyst 6509, & the Catalyst 6513 and does. With strong roots in the pre owned network equipment industry, also stocks and sells pre owned Cisco equipment. The enterprise-class Cisco UCS C240 M6SX Rack Mount Server Family packages advanced performance with energy efficiency of the Intel Xeon processor 6300 product family in a 2-Rack-Unit (2RU) form factor. It provides high density 1/10/40 GE in a compact 21-rack-unit modular chassis. switch 1 module 2 EARL outlet temperature: 27C. 5 in. Community. Cisco UPOE with 60W power per port in 1 Rack Unit (RU) form factor IEEE 802. Figure 4 shows the details of the rear panel for the UCS C220 M7 with three rear half-height PCIe risers. Here is what it says about the fan: fan-tray 1: fan-tray 1 type: WS-C6509-E-FAN. Learn about the features and benefits of the Cisco UCS C125 M5 Rack Server Node, a high-density, 2-socket node for the UCS 4200 Series Chassis. The Cisco R Series rack conforms to these requirements. 6 cm) or 42 rack units for a dual-chassis installation. Hot-Swappable. . 63 (6. 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. 21RU . Manufacturer Product Number. 75 inches (4. Cisco Catalyst 6500/6800 Supervisor 6T Architecture White Paper. Rack Units (RU) 14 Weight Chassis Only (lbs): 60 Fully Configured (lbs): 190 The Accessories Table 2 shows some accessories of the WS-C6509-E. AC needs 3Kw PS. Note The center rack-mount kits are not supported on the Catalyst 6503, Catalyst 6503-E, and Catalyst 6509-NEB, and Catalyst 6509-NEB-A switch chassis. 8G (10Hz. Connect the other end of the cable to the mini-B (5-pin-connector) USB port on the switch front panel. fan-tray 1: fan-tray 1 type: WS-C6509-E-FAN. -. 2 (31)SGA 15-Oct-2013. 75 inches (4. Rate this: Share this post please: Tweet; Reddit; Like this: Like Loading. Book Title. in Computer Uninterruptible Power Supply Units. When mounting this unit in a partially filled rack, load the rack from the bottom to the top with the heaviest component at. install of Rack PDUs and cable management > Front and rear perforated doors > Half-height side panels > Easily adjustable levelling feet and casters. x. 09 cm). How can we connect from patch panel to the switch?Ovation Workplace Services / Hitachi Energy Project • Design setup and built the network to provide internet Wi-Fi services for users and clients, the network consist Cisco 6509 Catalyst Switch. Chassis Weight with 2 Power Supplies (AC) and Fan tray. Conditions may vary from the visual depictions on the site. Note: Sup-2T requires E-series switches. Customers are encouraged to migrate to the 21-rack unit Cisco Catalyst 6500-NEB-A chassis with no PS and no fan tray. Catalyst 6509-E Rack Mount Kit REMANUFACTURED. All Products Cabinets, Thermal Management, Racks and Enclosures Air Inlet & Exhaust Duct. Related. 25 inches (13. Jan 31 2012 August 17, 2012. Cisco R42612 Rack and RP-Series Metered Input PDU Installation Guide . Cisco 6509 UPS. 14 Get Discount: 56: CABLETRAY-09-RF. Available in 3-, 6-, 9-, and 13-slot chassis, Catalyst. Hot, exhaust air is directed to the rearThe WS-C6509-E-FWM-K9, or Cisco Catalyst 6509-E with Supervisor Engine 720-3B, FWSM, and Catalyst 6509 Fan, can be configured with up to four FWSMs to deliver 20 Gbps of performance. Effect of damage on the installation . 1-2 Cisco IOS Software Configuration Guide, Release 15. 1 cm). The 6500-e Series Switches Offer Enhancements To Scale Beyond The 4000w Power Supply. 2 . 20 lbs. For a one RU (rack unit) switch, 1. 2900 W maximum with the following source AC arrangements: Catalyst 6500 Series Supervisor Engine 2 Boot ROM and Bootflash Device Upgrade Installation Note 16/Feb/2011. Read supervisor data sheet. Full product description, technical specifications and customer reviews from BT Business DirectCisco 6509-E | Full Specifications: Administered: yes, Width: 445, Height: 622, Depth: 460, Weight: 27. 19 x 17. The maximum standard Ethernet frame size is 1518 bytes (1522 bytes with an 802. NameCatalyst 6509 Switch ChassisProduct LineCatalystProduct Series6500Brand NameCisco-IMSourcingProduct ConditionRefurbishedI/O ExpansionsNumber of Total Expansion. You could try to reseat the module, this a good test, but try to console into the supervisor to have visibility over the problem. To help with cable management, you might want to allow additional space in the rack above and below the chassis to make it easier. In Network Equipment Building Systems (NEBS) compliant installation, you can use only a 23-inch rack mount. 25 inches (13. Tripp Lite. Product Number. If your Catalyst 6509 chassis is not rack-mounted, install the chassis in the rack using the procedures contained in the Catalyst 6500 Series Switches Installation Guide. N9K-C9508-B3-E Overview. 30-Nov-2022. The project was simple, stack many switches on rack, however, what is the maximum number of racks units with a default stack cable? We have seen 6 rack units are the maximum, but it is too tight, so I think the maximum actually should be only 5 rack units. NEBS-Compliant Rack Mount—Front to back. 75 inches (4. 2" Weight (Approximate) 60 lb. Introduction. Options. The Future Is 40 Gigabit Ethernet White Paper (PDF - 2 MB) Virtual Private LAN Service on Cisco Catalyst 6500 Supervisor Engine 2T. Networking Enclosure Applications. Can the above be accomplished by one person within a work week? I am not familiar with Cat6509s. 25 inches (13. At last count, this site offers over 300MB of Visio networking madness, including 192 stencils which contain 4999 Visio network shapes. Cisco Firepower ® 9300 is a scalable (beyond 1 Tbps when clustered), carrier-grade, modular platform designed for service providers, high-performance computing centers, large data centers, campuses, high- frequency trading environments, and other point in network requiring low (less than 5-microsecond offload) latency and exceptional throughput. A rack unit (abbreviated U or RU) is a unit of measure defined as 1 + 3 ⁄ 4 inches (44. 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. 0 ASIC, supports up to 2. 6509 NEBS Upgrade for AC and DC. (See Figure 3-13. 5(x) 03-Jan-2014Rack Units 3U Interfaces 3 integrated 10/100/1000 Ethernet ports with 2 ports capable of RJ-45 or SFP connectivity Expansion Slot(s). The improved cable management helps to keep cables organized, reducing clutter and improving the overall appearance of the network setup. Boxes, Enclosures, Racks; Rack Components; Tripp Lite ETN-6509CVK48. Cisco R42612 racks support industry-standard PDUs including Cisco RP Series PDUs. This product is supported by Cisco, but is no longer being sold. ASR1000-RP2 module, future next generation ASR1000-RP3 module, and ASR1000-ESP40 and ASR1000-ESP100 engines. Cisco ® Catalyst ® 6500 Series Switches offer a variety of Ethernet modules to serve different needs in the campus and data center for enterprise, commercial, and service provider customers. Each provides a high-performance, centralized, shared-memory switch fabric, protecting your line-card investment by supporting the addition of optional higher layer engines (Table 2). 75 inches (4. 3, Management interface: SNMP, Telnet, Number of ports: 9, Data. Cisco UCS C220 M3 Rack Server Cisco, Servers $ 3,200. The 7-rack. 4000 . How can i check in the Cat 6509. The ready-to-use architecture organizes power distribution, simplifies cable management, and enables you to move, add, and change rack equipment without an electrician. RF Receiver, Transmitter, and Transceiver Finished Units; RF Shields; RF Switches; RF Transceiver ICs; RF Transceiver Modules. Product Name Product Description Current Price Unit of Measure Manufacturer Name Manufacturer SKU WS-C2360-48TD-S. Up to 400m link lengths are possible when using 4700. End-of-Sale and End-of-Life Announcement for the Cisco Nexus 5500, 5600 and 6000 NX-OS 7. Cisco Catalyst 6500 Series VPN Services Port Adapter 24/Oct/2016. Cisco Router, Switch, Firewall, Wireless AP, IP Phone Price List Search GPL Bulk Search. More Brands. (It's a configured item in the CISCO3945/K9. 75-inch screws (part number 48-0441-01); depending on your rack type, use these screws to secure the sliding-rack tray to your rack. 75 in. The Cisco Catalyst 4500 Series offers a powerful and flexible network solution that can be built with eight supervisor engine alternatives. Deployment of 40G Fiber Network - Cisco ASR – 9904, Cisco Firepower 9300 Firewall and Cisco 6509-E Aug 2017 - Sep 2017 Environment: Cisco ASR – 9904, Cisco Firepower 9300 Firewall and Cisco 6509-ERack with sample component sizes including an A/V half-rack unit A typical section of rack rail, showing rack unit distribution. Solved. 4 cm) For a one and a half RU (rack unit) switch, 2.