Cisco Network Mapper
TcL Network Interface Mapper Is there a way to run a a TcL script that checks the MAC Address table, compares it to the ARP table, does an NSLookup for each entry, and gives a list of interfaces with the hostname of the device that's attached? Benefits Cisco’s software-defined wide area network (SD-WAN) solution allows user to quickly.
- Switch Miner is a lightweight utility for Windows that acts as a switch port mapper/switch port discovery tool for Cisco switches. It helps network engineers discover the devices that are connected to the all the ports of a switch. It will even discover neighboring switches via CDP and scan them also.
- Thanks everyone for the great tips. I am able to do a walk through if needed data center is about 20min away. And we do have solarwinds I just got access to the admin account of if hopefully its not a limited account. And I do have port mapper tool. I also have Cisco Network Assistant.
- Understand your network so you can defend it better 10 Free Or Low-Cost Network Discovery And Mapping Tools. 10 Free Or Low-Cost Network Discovery And Mapping Tools.
Python script to help map a network connected to Cisco switches.
Every time a cable is connected to (or disconnected from) a supported Cisco switch, a message is displayed over SSH, similar to the following:
This script aggregates these messages from multiple switches. By unplugging and plugging in devices at each network hop, a map of the network can slowly be formed. This is useful in situations where the network ports and patch panels have not been proplerly labeled. When first started, the script will create a CSV file (if it doesn't already exist) with all the necessary information. It will then ask the user where they are, ie. what hop of the network they are at. The user then needs to connect and disconnect each network cable and tell the script the name of the plug.
Each entry is checked against the current entry in the CSV file, and the new entry is saved. If the location is at the 'Wall Plug' then an additional description can be added.
Requirements
Solarwinds used to have a product. I think it was called LANSurveyor that was free and could create network diagrams directly in Visio. I don't know if they still have it or not. Most switch vendors have a tool (ie: Cisco's is Cisco Network Assistant) that you can download and use for free to create network documentation. Data is stored using a SQL database for scalability and speed. Layer-2 topology protocols such as CDP (Cisco Discovery Protocol) optionally provides automatic discovery of the network topology. The network is inventoried by both device model and operating system (like IOS).
Automatic Network Mapping Software
- Python 2.7
- Paramiko for SSH (http://www.paramiko.org/)
- Tested and designed to work with SG300-28P switches from Cisco.
- The Syslog Aggregator should be disabled in each switch so that the messages will appear immediately. (https://community.cisco.com/t5/small-business-support-documents/configure-log-aggregation-settings-on-an-sx350-series-managed/ta-p/3170437)
Instructions
Variables at the top of the file:
username - Log in name for the switch.
password - Log in password for the switch.
switches - The list of switches, formatted: [Switch Number/Name, IP Address, Number of ports]. Note: Switch Number/Name can also be text.
locations - Locations with patch panels and sockets, formatted: [Location Number, Location name].
header - Main header that appears at the top of every file, including the Switch Name, Port Number, and Port Name.
description_loc - Determines which location will trigger the request for a description. By default it's the Wall Plug.
file_name - The name of the file that will be generated and then used.
For debugging purposes, the line at the top of the script that calls logging.basicConfig can be uncommented to view SSH debug info:
Additionally, the main program can be run with just one switch to troubleshoot any connection issues:
What is Network Mapping?
Network mapping is a process used to discover new devices, interfaces and visualize physical and virtual network connectivity. Network mapping helps in breaking down the network thereby simplifying network maintenance and management. This is done with the help of a network mapping software or tool. Network scanners detect the network with all its components and delivers the list of devices. This can be used to create a network map or a network topology. Network mapping tools integrate the process of scanning and mapping and maps a network automatically. OpManager, the automated network mapping software lets you configure and generate network maps effortlessly.
Automate network map; visualize and pinpoint network outages and performance degradation with OpManager
When the number of monitored devices increases and when companies expand to multiple locations, it becomes impractical to maintain a static network map. Further, referring to a fixed network diagram in the event of a network failure or performance degradation is highly complex and an unwholesome experience.
Quickly create a network map layout by choosing the appropriate credentials.
Customize & export network maps to business views or even to Microsoft Visio.
Physical location network view of how the devices are arranged on the Datacenter racks; helps you locate the device swiftly.
Infrastructure displayed over real-world Google maps with automatic device status propagation.
OpManager infrastructure maps: Automatic L2/ L3 network maps (Network views), Custom network maps (Business views), 3D floor views (Datacenter floor) and Rack views.
3D Datacenter Floor: OpManager allows you to create an exact replica of your datacenter in 3D with all the racks.
Cisco Network Mapper App
A sample tree network layout of an enterprise network.
Automatic network mapper
The IT network is forever dynamic; the static network maps often fail to capture the new changes in the network. When a network fault occurs, it becomes impossible to track the affected device or business service using the static network diagrams. With OpManager’s automatic network mapping tool, administrators can:
- Visualize their complete IT infrastructure.
- Be assured of referring to the most up-to-date network maps, with periodic network scanning.
- With the network topology mapper tool, construct an easy-to-view network topology map that lets one choose the network’s seed device and preferred network layout type.
- Share network diagrams across peer groups in no time by exporting to Microsoft Visio.
Pinpoint network outages and performance degradation at–a–glance
OpManager's network mapper reflects the latest device and link status with color coded icons in the network maps, acting like a live Visio diagram that lets administrators:
- Spot any network problems at-a-glimpse.
- Quickly drill down to the problematic device or to the link from the network maps.
- Understand relationship between the parent and the dependent devices.
- See the intensity of the network issue identified by faithfully reproducing the network layout.
- Prioritize network faults and start remediation actions.
Keep an eye on critical business services and custom device groups
It makes sense to group the devices that need special attention under one consolidated view even when they are spread across subnets. That’s exactly what OpManager’s custom maps or Business views section offers.
Learn more about custom network maps and network topology mapping with OpManager, the automatic network diagram software.
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Cisco Networking Academy
- Proactively identify devices or business services that need immediate attention and start resolving the bottlenecks if any.
- Organize an enterprise network geographically.
- Find out not just the problematic device but also where it is located, visually.
- Create and share application or location specific network diagrams.