Buy Cisco WS-C2940-8TF-S C2940 8-Port SwitchCisco WS-C2940-8TF-S C2940 8-Port Switch Product Description:
- WS-C2940-8TF-S Catalyst 2940 - 8 10/100 + 1 100BASEFX + 1 SFP slot
Product Description
Cisco 8 10/100 Ethernet ports and 1Cisco Catalyst 2940 - Switch - 8 ports - EN, Fast EN, Gigabit EN - 10Base-T, 100Base-FX, 100Base-TX + 1x100BaseFX(MT-RJ)(uplink) + 1 x SFP (empty)
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1 of 1 people found the following review helpful.
Good start for CCNA / CCIE studies. / Some important feature notes:
By Anonymous
This is a good device for CCNA / CCIE studies, the lightweight, compact size and quiet fanless operations along with CatOS makes it a worthy investment.It doesn't require an external power supply and uses the common C13 cord (Tripp Lite P007-006 6ft Power Cord C13 to 5-15P 120V 15A 14Awg SJT) cord still used in most desktops for the past 20 years.The 2940 was manufactured in 2004 and declared EndOfSale January 2010 with no more official software updates after January 2011. Cisco has further declared an official obsolescence January 2015 when all 2940's are unofficially unwanted embarrassments just like alcoholic children, once useful but useless annoyances that should be replaced or just disappear.It natively includes CatOS 12.x and supports Spanning tree protocol, it supports LinkAggregation and EtherChannel. The integrated GBIC is ready for uplink using an MTRJ fiber cable for vertical 100mbs Ethernet or just linking a compatible device including another 2940. 3M Duplex Fiber Optic Cable Mtrj/mtrj MMf 62.5/125The integrated 100BASE-FX is automatically disabled if inserting a Cisco Compliant 1000BASE-SX SFP Transceiver Module GLC-SX-MM-OEM and the 2940 DOESN'T support Cisco Stacking regardless of the connector type.You can always substitute GNS or PacketTracer but you are deprived of the physical configuration exercises when using software emulators.The devices autosensing ports are tenacious whether connecting to uplinks or serving clients, in one example I connected a PC using a cross over cable to a dumb ethernet extension adapter then to a straight through cable into one of the switch ports. After a few seconds, the switch detected the cable inversions and provided full duplex 100MBs throughput to Cisco and nonCisco routers and without complaint or collisions !Beware, it uses a rollover cable for console access instead of the DB9 serial, if your system doesn't have a serial port, you can use a combo setup for USB/Serial Plugable USB to RS-232 DB9 Serial Adapter (Prolific PL2303HX Chipset) <--> DB9/Rollover Diablo Cable 6ft Rollover Console Cable DB9 Female to RJ45 Male for Cisco 72-3383-01. That combo cable setup works seamlessly on Windows and contemporary versions of LINUX without requiring driver installs.ORYou can use the Devices Express Setup feature to access the HTML based web manager then enable TTY access via Telnet over CAT3 or newer as if you were using the console port / the following instructions are extracted from Cisco's web site documentation of 2004:(Amazon prohibits linking to external web sites)Step 1 Verify that no devices are connected to the switch, because during Express Setup, the switch acts as a DHCP server. If your PC has a static IP address, before you begin you should change your PC settings to temporarily use DHCP. Step 2 Connect the AC power cord to the switch and to a grounded AC outlet. The power-on self-test (POST) begins. During POST, the LEDs blink while a series of tests verify that the switch functions properly. Step 3 Wait for the switch to complete POST. It might take several minutes for the switch to complete POST. Step 4 Verify that POST has completed by confirming that the SYST and STAT LEDs are green. Step 5 Press and hold the Mode button for 3 seconds. When all of the LEDs above the Mode button turn green, release the Mode button. If the LEDs above the Mode button begin to blink after you press the button, release it. Blinking LEDs mean that the switch has already been configured and cannot go into Express Setup mode. For more information, see the "Resetting the Switch" section. Step 6 Verify that the switch is in Express Setup mode by confirming that all LEDs above the Mode button are green. Step 7 Connect a straight-through Category 5 Ethernet cable (not provided) to any 10/100 or 10/100/1000 Ethernet port on the switch front panel and to the Ethernet port on the PC. Step 8 Verify that the LEDs on both Ethernet ports are green. Step 9 Wait 30 seconds. Step 10 Launch a web browser on your PC. Enter the IP address 10.0.0.1 in the web browser, and press Enter.If your switch arrives with an existing config and without access, you can reset the switch with the following asset reclamation instructions extracted from Cisco's web site:Resetting the Switch This section describes how to reset the switch by rerunning Express Setup. These are reasons why you might want to reset the switch: *You installed the switch in your network and cannot connect to it because you assigned the wrong IP address. *You want to clear all configuration from the switch and assign a new IP address. *You are trying to enter Express Setup mode and the switch LEDs start blinking when you press the Mode button (which means that the switch is already configured with IP information).Caution Resetting the switch deletes the configuration and reboots the switch. To reset the switch: *Press and hold the Mode button. The switch LEDs begin blinking after about 2 seconds. Continue holding down the Mode button. The LEDs stop blinking after 8 more seconds, and then the switch reboots. The switch now behaves like an unconfigured switch. You can enter the switch IP information by using (the aforementioned) Express Setup
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