Back Dce Dte
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 NEW CAB 6060 Back to Back WIC 1T TO WIC 1T DTE DCE f3  US $8.70
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 100 NEW DB60 Serial DCE DTE back to back Cable 3 ft US $9.99
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 NEW CAB 6060 Back to Back WIC 1T TO WIC 1T 1T DTE DCE US $10.99
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Cisco Lab True Story
Part of your CCNA / CCNP education is deciding what network topology to use when you're putting together your home lab. Some of you are starting with one or two routers or switches, while others are starting with more. A customer recently sent me a list of his Cisco routers and switches that he has available for a home lab and asked for my help in coming up with the best way to use them.
There is no "right" or "wrong" answer to this question; again, part of the learning process is configuring and reconfiguring the physical topology of your lab. Let's look at the routers and switches he has available, including the interfaces on each, and come up with one possible CCNA / CCNP home lab setup.
The equipment list:
Two 3620 routers. Each has 1 serial port and 2 ethernet ports.
One 3640 router. This has two ethernet cards, each with two ports, and two AUI ports.
Three 2503s, my personal favorite for home labs! These have 1 AUI port, 2 serial interfaces, and one BRI interface apiece.
One 2524 router. This has one serial port, 1 ethernet port, and one BRI interface.
One 4500 router. This has eight BRI ports, 2 ethernet ports, and more importantly, four serial ports.
He also has a 5200 access server, an ISDN simulator, one 2924 switch, and one 1924 switch.
Now, if you don't have this much equipment to work with, don't panic! Most CCNA / CCNP candidates don't; this is more of an exercise in looking at what you do have and using it to the utmost.
As I've mentioned in many of my CCNA / CCNP home lab articles, an access server is a great thing to have. All he needs is an octal cable to connect his AS to the other devices we choose to use, and he's all set. (If you need an access server sample configuration, there is one on my website in the Home Lab section.)
A frame relay switch is also great to have, and the 4500 will make a great FR switch. Having a frame relay cloud in your CCNA / CCNP home lab is a great way to get experience configuring and troubleshooting frame relay, an essential skill for CCNA success.
I would put both of the 3620s on the frame relay cloud via the Serial interface, as well as two of the 2503s. That gives you four routers that will be using frame relay to communicate, and that's the most we can have since the 4500 has four serial ports. The 4500 will need to be configured as a frame relay switch and connected to the other routers via a DTE/DCE cable. (Again, if you need a frame relay switch configuration, the one I use in my pods is on the website in the same place as the access server configuration.)
The two 2503s that are on the frame relay cloud should also be connected via their BRI interfaces. The home lab also includes an ISDN simulator, which is necessary to allow routers to communicate via their BRI interfaces. Just get a couple of straight-through cables to connect those two routers to the ISDN simulator and that segment is ready to go. (Remember that you can't connect Cisco routers directly via their BRI interfaces.)
All of the routers in this lab have at least one ethernet or AUI port, so we can connect them all to either one of the switches. The switches should be connected via at least two crossover cables to allow practice with trunking, root bridge election, and VLANs. Having two switches really does add quite a bit to a CCNA / CCNP home lab's capabilities. You can experiment with different subnets and vlans with as well. Don't be afraid to dive in - that's what a home lab is all about!
So now we've got four routers connected via frame relay, two via ISDN, and the others via ethernet segments. Two of the routers that are not using their serial interfaces should be connected directly via their serial ports. For this, you'll just need another DTE/DCE cable. Knowing how to bring up the line between two directly connected serial ports is an important CCNA skill, and so is troubleshooting it. You should be able to bring such a connection up with your eyes closed, and once you work with your own CCNA / CCNP home lab, you'll be able to!
Also, don't forget to add a loopback interface to each one of your routers. I like to use 1.1.1.1 for R1, 2.2.2.2 for R2, and so on. Advertising loopbacks is another great way to get practice with RIP, OSPF, EIGRP, IGRP, and static routing.
We've taken a pile of routers and switches and turned them into a fantastic CCNA / CCNP home lab. Whether you're working with two Cisco devices or ten, coming up with your own home lab topology is a great learning experience and the beginning of developing your analytical and troubleshooting skills.
About the Author
For tips on limonium flowers, limonium perezii, sunflowers, mammoth sunflower , sunflower care and other information, visit the Gardening Central website.
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3FT Back to Back DCE DTE Crossover Cable for CISCO $7.2 DESCRIPTION * 3ft High-Density DCE/DTE DB60 Crossover Cable for CISCO * 100% New cable packed on plastic bag * This is V.35 DTE to DCE Cable using DB60 connector * For use with Cisco router / Switch for back to back crossover connect to join the large network * Use for connect Cisco 1600 1700 2500 2600 3600 * Please check with your Cisco device manual before buy * Molded plugsPackage Content * 3ft back to back DCE to DTE DB60 Crossover cable for CISCO |
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Cables To Go Serial DTE/DCE Cable $8.99 03046 1 1 x DB-9 Female 15 ft 8.16 oz EMI/RFI Beige CTG's line of Null Modem serial cables allows two DTE or DCE devices to communicate with no conflict in data transmission. The transmit and receive signals are crossed to ensure proper data transmission. CTG's inexpensive, high-quality cables deliver the data for you quickly and reliably over short distances (less than 100 feet). Each of our Null Modem cables are designed with a rugged, overmolded construction that provides added strain relief and a solid connection each time. As always, the cables are foil shielded for protection from EMI/RFI interference caused by surrounding office equipment and flourescent lights. Available in a wide array of stock lengths and gender combinations, our offering also allows connections to DB9 (AT) or DB25 (PC) serial ports. Cables in female-to-female versions are typically connecting two PC serial ports. Don't forget, custom lengths are our specialty. Cables To Go DB-9 Data Transfer Cable Lifetime Retail Serial Serial DTE/DCE Cable www.cablestogo.com |
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Digi Crossover DCE Cable $22.99 1 x 25-pin DB-25 Male 1 x RJ-45 Male 48" 76000238 Sun Microsystems DTE Sun SparcSun Microsystems DTE Sun UltraDigi Other DTE devices with DB-25 Female portsDigi Terminal Server PortServer TSDigi Terminal Server PortServer IIDigi Adapter Multiport with RJ-45 connectors Crossover Crossover DCE Cable DB-25 DCE Digi Digi International Network Cable RJ-45 Retail www.digi.com |
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03044 - Cables To Go Serial Dte/Dce Cable - Db-9 Female - Db-9 Female - 6Ft - Beige $3.47 Ctg's Line Of Null Modem Serial Cables Allows Two Dte Or Dce Devices To Communicate With No Conflict In Data Transmission. The Transmit And Receive Signals Are Crossed To Ensure Proper Data Transmission. Ctg's Inexpensive, High-quality Cables Deliver The Data For You Quickly And Reliably Over Short Distances (less Than 100 Feet). Each Of Our Null Modem Cables Are Designed With A Rugged, Overmolded Construction That Provides Added Strain Relief And A Solid Connection Each Time. As Always, The Cables Are Foil Shielded For Protection From Emi/rfi Interference Caused By Surrounding Office Equipment And Flourescent Lights. Available In A Wide Array Of Stock Lengths And Gender Combinations, Our Offering Also Allows Connections To Db9 (at) Or Db25 (pc) Serial Ports. Cables In Female-to-female Versions Are Typically Connecting Two Pc Serial Ports. Don't Forget, Custom Lengths Are Our Specialty. [1814294] UPC: 757120030447 UNSPC: 26121624 3.9L x 7.8W x 0.4H 0.25 LB 0.01 Cubes |
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03046 - Cables To Go Serial Dte/Dce Cable - Db-9 Female - Db-9 Female - 15Ft - Beige $4.65 Ctg's Line Of Null Modem Serial Cables Allows Two Dte Or Dce Devices To Communicate With No Conflict In Data Transmission. The Transmit And Receive Signals Are Crossed To Ensure Proper Data Transmission. Ctg's Inexpensive, High-quality Cables Deliver The Data For You Quickly And Reliably Over Short Distances (less Than 100 Feet). Each Of Our Null Modem Cables Are Designed With A Rugged, Overmolded Construction That Provides Added Strain Relief And A Solid Connection Each Time. As Always, The Cables Are Foil Shielded For Protection From Emi/rfi Interference Caused By Surrounding Office Equipment And Flourescent Lights. Available In A Wide Array Of Stock Lengths And Gender Combinations, Our Offering Also Allows Connections To Db9 (at) Or Db25 (pc) Serial Ports. Cables In Female-to-female Versions Are Typically Connecting Two Pc Serial Ports. Don't Forget, Custom Lengths Are Our Specialty. [1769613] UPC: 757120030461 UNSPC: 26121624 5.9L x 5.7W x 1.2H 0.4 LB 0.01 Cubes |
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Mozart: Ger Dce $6.49 Mozart: Ger Dce |
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Gespaltene Städte? $39.95 Gespaltene Städte? |
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Lantronix / Lantronix DCE Adapter / 200.2069A $23.95 Lantronix - Lantronix DCE Adapter - 200.2069A |
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Digi Serial Adapter DCE 76000700 $34.94 Digi Serial Adapter DCE 76000700 |
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Digi DCE Cable $22.99 1 x 9-pin DB-9 Female 1 x RJ-45 Male 48" 76000201 Modems and other DCE devices Copper DB-9 DCE DCE Cable Digi Digi International Network Cable RJ-45 www.digi.com |
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OSF DCE Introduction to OSF, DCE Release 1.1 $76.97 Provides an overview of DCE and serves as an introduction to the DCE documentation. Contains comprehensive glossary of DCE Author: Open Software/ Open Software Foundation, Software Found/ Open Software Foundation Binding Type: Paperback Number of Pages: 272 Publication Date: 1995/09/10 Language: English Dimensions: 9.21 x 7.09 x 0.57 inches |
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Lantronix / Lantronix DTE Adapter / 200.2071 $24.28 Lantronix - Lantronix DTE Adapter - 200.2071 |
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Null modem cable - DB-9 (F) - DB-9 (F) - 15 ft $15.99 Cables To Go's line of Null Modem serial cables allows two DTE or DCE devices to communicate with no conflict in data transmission. The transmit and receive signals are crosse |
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Datalogic DCE Coiled Cable $29.99 25-pin Female RS-232 CAB-471 Copper DCE Coiled Cable Datalogic Datalogic S.p.A Network Cable Not Applicable www.datalogic.com |
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Lantronix / RJ45 TO DB9F DCE ADAPTER FOR / 200.2070A $23.81 Lantronix - RJ45 TO DB9F DCE ADAPTER FOR - 200.2070A |
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Network V.35 DCE Rev E 022440101 $807.55 Network V.35 DCE Rev E 022440101 |
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HP Enhanced V.24 DCE Router Cable JE639A $6.98 HP Enhanced V.24 DCE Router Cable JE639A |
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3Com 11.8ft Router Cable X.21 DCE 3C13682 $4.98 3Com 11.8ft Router Cable X.21 DCE 3C13682 |
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HP Enhanced X.21 DCE Router Cable JE638A $6.98 HP Enhanced X.21 DCE Router Cable JE638A |
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Rachmaninov: Sym Dce Op45/Isle Of The Dead Op29: $6.49 Rachmaninov: Sym Dce Op45/Isle Of The Dead Op29: |
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Cisco Router to Router 3-foot Cable $21.59 Increase connectivity with Cisco router to router cablesA/V cable DB60 back to backCable helps to simulate Frame-Relay and other WAN topologiesComputer accessory used to connect two Cisco 1600/ 1700/ 2500/ 2600/ 3600 (WIC-1T, NM-4A/S, NM-8A/S on the 2600 and 3600) series routers via their serial portsDTE and DCE marking on both endsMeasures 3 feet long |
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Equinox Serial DCE Adapter $18.99 1 x 9-pin DB-9 Female 1 x RJ-45 Female 2 210120 - DB-9 Equinox Equinox Systems Network Adapter RJ-45 Serial DCE Adapter www.equinox.com |
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Avocent DCE Serial Adapter $24.99 1 x 9-pin DB-9 Female 1 x RJ-45 Female 2 210120 EIA/TIA-568 Category 5 Avocent Avocent Corporation DB-9 DCE Serial Adapter Network Adapter RJ-45 www.avocent.com |
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HP DCE Serial Adapter $56.99 1 x DB-89 1 x RJ-45 2 5 AF402A DB-89 DCE Serial Adapter Data Transfer Adapter HP Hewlett-Packard RJ-45 www.hp.com |
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Lantronix DCE Network Cable $11.99 1 x 25-pin DB-25 Male Network 1 x 8-pin RJ-45 Male Network 500-102 72" Lantronix Terminal Server ETS 16P, ETS 4P, ETS 8P, ETS 8PS, ETS 16PS, ETS 16PR, ETS 32PR Copper DB-25 DCE DCE Network Cable Lantronix Lantronix, Inc Network Cable RJ-45 Retail www.lantronix.com |
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Lantronix DCE Adapter $14.99 1 1 x 9-pin DB-9 Male 1 x RJ-45 Male 2 200.2069A Lantronix - Secure Console Server SCS1600, SCS3200, SCS3205, SCS4805 Lantronix offers accessory cables and adapters for use with SCS product line. DB-9 DCE Adapter Lantronix Lantronix, Inc Network Adapter RJ-45 www.lantronix.com |
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Digi DTE Crossover Cable $22.99 1 x 9-pin DB-9 Female Serial 1 x RJ-45 Male Network 48" 76000645 76000645 DTE Crossover Cable Adapter Copper DB-9 DTE Digi Digi International Network Cable Adapter Not Applicable RJ-45 www.digi.com |
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Network V.35 DTE I/F 11268 $807.55 Network V.35 DTE I/F 11268 |
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Cabletron V.35 DTE Cable For the FRX4000 FRX-V35DTE-CAB $350 Cabletron V.35 DTE Cable For the FRX4000 FRX-V35DTE-CAB |
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DIGI 8PORT DB25F DTE BOX 76000027 $75.97 DIGI 8PORT DB25F DTE BOX 76000027 |
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Cables To Go Null Modem Adapter. Each $2.72 Manufacturer: Cables To Go. Each. Convert a serial cable into a null modem cable with this handy adapter, a quick and easy fix for your DTE or DCE incompatibilities. Crossing the data transmission lines in straight-through serial cables, this adapter will |
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Digi Serial Adapter DCE $29.99 1 x 25-pin DB-25 Male Serial 1 x RJ-45 2 4 76000700 Digi One RealPort RJ-45 Digi One SP DB-9 Digi One TS H RJ-45 Digi One TS W RJ-45 Digi PortServer II RJ-45 DB-25 Digi Digi International Network Adapter RJ-45 Serial Adapter DCE www.digi.com |
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Equinox RJ-45 to DB-9 DCE Adapter $18.99 1 x 9-pin DB-9 Female 1 x RJ-45 Female 2 210095 Terminal - DEC DB-9 Equinox Equinox Systems Network Adapter RJ-45 RJ-45 to DB-9 DCE Adapter www.equinox.com |