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Category Archives: Networking
EIGRP Route Filtering with ACLs
There are a number of reasons to implement route filtering. The filters can be used to control what routes are sent as well as what routes are learned from a neighbor. With ACLs the configuration is very flexible so just about anything is possible! Continue reading
IPv6 Access List Basics
Chances are that if you have worked with IPv4 on the IOS platform for any length of time you are familiar with the access list formats, both standard and extended. Assuming you know at least the basics of the addressing structure you should have no issue establishing similar ACLs for IPv6. Creating IPv6 ACLs The first considerations are that IPv6 ACLs have to be the “extended” format meaning the both the source and destinations have to be defined. The ACLs also have to be named with a string as numbered ACLs are not acceptable. The ACL name can contain numbers … Continue reading
Verifying Cisco IOS File Integrity
Moving files on Cisco devices is important to know how to do but knowing the files are free of errors is also important. If you have every upgraded a device and find that it won’t boot because the image file corrupted you certainly know what I’m talking about. While this happens very rarely it’s important none the less. Additionally, knowing that you got the IOS from Cisco without it being tampered with is also important from a security standpoint. First, jump onto Cisco.com and log in with your Cisco ID. Access the download section for a device you have support … Continue reading
APC Network Management Card CLI Setup
In this quick article I will give you a crash course in the CLI and cover the basic IP setup of one of these units. Once the unit is IP addressed you can access the web GUI to configure it further. The box the network management card came in will include a console cable to administration. It will have a serial connector on one end and what looks like an 1/8 inch male audio connector on the other end. This is what connects to the net management card. Connect to the unit with your laptop using 9600 baud and other … Continue reading
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