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Configuring Basic MPLS Using OSPF Introduction This document shows how to configure a basic Multiprotocol Label Switching (MPLS) network. Refer to  Configuration Examples and TechNotes  on the MPLS Support Page for more information on how to configure advanced topics such as VPN or Traffic Engineering (TE). Prerequisites Requirements Cisco recommends that you are familiar with the basic operation of MPLS. Refer to  Multiprotocol Label Switching Overview  for an overview of MPLS. Components Used The information in this document is based on these software and hardware versions: Cisco IOS® Software Releases 12.2(28) Cisco 3600 routers The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, make sure that you understand the potential impact of any command. Conventions Refer to  Cisco Technica...

How to configure Frame Relay on Cisco a Router. The figure below shows the basic  Frame Relay  configuration on a Cisco router, connected directly to a dedicated Frame Relay switch, or DCE. All router interface had been configured with IP addresses and routing protocol -  RIPv2 .     R1 R1# config t R1(config)# interface serial 0/0/0 R1(config-if)# encapsulation frame-relay R1(config-if)# frame-relay lmi-type ansi R1(config-if)# frame-relay map ip 10.1.2.2 102 broadcast R1(config-if)# no shutdown R2 R2# config t R2(config)# interface serial 0/0/1 R2(config-if)# encapsulation frame-relay R2(config-if)# frame-relay lmi-type ansi R2(config-if)# frame-relay map ip 10.1.2.1 201 broadcast R(config-if)# no shutdown How To Configure Frame Relay with Subinterfaces     In the topology above, the frame from R1 use  DLCI  value 102. It leaves the router (R1) using VC 102. This process of VC-port map...

Frame Relay Overview Today's LANs and computing equipment have the potential to run at much higher speeds and transfer very large quantities of data. With the diversity and complexity of today's networks, management can be a mammoth task if you don't have the proper tools. Each environment is a unique combination of equipment from different vendors. Frame Relay, which is a relatively new wide area networking method, is gaining popularity. Like X.25, it uses a packet-switching technology, but it's more efficient than X.25. As a result, it can make your networking quicker, simpler, and less costly. Frame Relay was developed to solve communication problems that other protocols could not: the increased need for higher speeds, an increased need for large bandwidth efficiency, particularly for clumping ("bursty" traffic), an increase in intelligent network devices that lower protocol processing, and the need to connect LANs and WANs. Like X.25, Frame Relay i...

Resolving Blue Screen errors in Windows Blue Screen errors (also sometimes called black screen errors or STOP code errors) can occur if a serious problem causes Windows to shut down or restart unexpectedly. You might see a message that says, "Windows  has been shut down to prevent damage to your computer." These errors can be caused by both hardware and software problems. If you added new hardware to your PC before the Blue Screen error, shut down your PC, remove the hardware, and try restarting. If you're having  trouble restarting, you can start (boot) your PC in safe mode. For more info, see  Windows Startup Settings (including safe mode) . You can also try the following: Get all the latest updates with Windows Update. Get help from other sources. Try restoring Windows back to an earlier point in time. Read through  Resolving stop (blue screen) errors in Windows 7  for troubleshooting tips that might be  helpful, even if you’re not ru...

Networking Basics: How ARP Works Understanding how ARP works can allow you to do many useful things. For example, a machine was recently set up accidentally with the IP address of another machine. This is an hour away, and accessing the system was tested before leaving the location, but after traveling back another machine was responding to that IP. Knowing ARP can allow you to fix this without having to go back to the location. Networking layers Outside of the classroom and interview environments, the OSI model network layers boil down mainly to layers 2, 3, and 7. The number of times I've encountered the other layers in the real world over the last several decades amounts to only a handful. For ARP, we are talking about layer 2. Layer 2 is the level that lower-end switches operate at, and is all about the MAC addresses. The MAC address is an ID, typically assigned by the manufacturer (though usually can be changed by software), which you see next to "HWaddr"...

What is dllhost.exe (dllhost.exe error)? dllhost.exe (dllhost.exe error) Description: Dllhost.exe  is a program which most likely arrived on your computer preinstalled, but there is also a virus / trojan under this same name. The actual disk location is also listed below, always verify where its located on your hard drive, as this makes sure it is not spyware or adware simply placed elsewhere on your computer, and using the same name in an attempt to fool you. This program is from Microsoft and its their DCOM software which is part of the operating system. The correct file location is shown below. Make sure you do not have a file under this name in a folder called "Wins" within the system32 folder, as that is a trojan and virus related file. The correct location for the system file (which is safe) is below. This software will appear in your startup as a service. This is a safe file and it is not considered to be virus or spyware related. dllhost.exe error: dllhost.ex...

The AIX® operating system is designed to deliver outstanding scalability, reliability, and manageability. Best of all, the AIX operating system comes from IBM, the world's leading technology company. IBM has broad experience in providing solutions to businesses of every size, in every industry, in every corner of the world. IBM has an excellent reputation for service and support. Whether you’re looking for planning services, integration and installation, tuning, migration, or everyday support, IBM provides service and support to help keep your business running. AIX is an open, standards-based operating system that conforms to The Open Group's Single UNIX Specification Version 3. It provides fully integrated support for 32- and 64-bit applications. The AIX operating system provides binary compatible support for the entire IBM UNIX product line including IBM Power™ Systems, System p™, System i™, pSeries®, iSeries™ servers as well as the BladeCenter® blade servers. AIX also sup...