Cisco Catalyst – Find out What Port an IP Address is Plugged Into

KB ID 0001022  Problem I networked some gear this afternoon, and I made a mental note of the ports I patched into on the switch. On the way back to the office I got side-tracked. By the time I got back to my desk I could not remember what port I had used, and I wanted to add a description to the port. This is not my server room 🙂 So I knew the IP address but not the port number, how can you find that out? Solution 1. My IP address is...

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Cisco Catalyst – Configure Ports for VMware ESXi NICs using VLANS
Nov17

Cisco Catalyst – Configure Ports for VMware ESXi NICs using VLANS

KB ID 0001065  Problem If you don’t need different virtual machines to be in different VLANS on your vSphere/ESXi servers then you probably just connect everything together and it all works fine. I was trying to carve off some hosts into their own VLAN today, and setup a new vSwitch. or if you prefer to work in the fat client. Now you can see (above), I’ve presented one physical NIC to this vSwitch (vmnic1). This is...

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Cisco IOS – Setup Remote Telnet/SSH Management

KB ID 000093 Problem Having the ability to remotely administer network devices, means I don’t have to get my lazy carcass out of my chair and start fishing console cables out of my bag, also it saves on shoe leather, and travelling time. Solution Cisco Router / Switch – Setup Telnet Access These days people frown at Telnet. It’s an insecure protocol so your password is sent in clear text over the wire, and can be...

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Cisco IOS – Return an Interface to Default (Remove all Settings)
Nov17

Cisco IOS – Return an Interface to Default (Remove all Settings)

KB ID 0001010 Problem The configuration for a particular interface can get quite long, you could go to interface configuration mode, and prefix all the commands with a ‘no’. But this can be a bit repetitive and time consuming. Solution To remove the configuration for interfaces use the ‘default’ command. for example take a look at the following config for FastEthernet1/0/5. Petes-Switch>enable...

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Cisco ISE – Basic 802.1x With WindowsPart Three – Adding Network Devices (Authenticators)
Nov17

Cisco ISE – Basic 802.1x With WindowsPart Three – Adding Network Devices (Authenticators)

KB ID 0001077  Problem Back in Part Two we configured the specific 802.1x policies in Cisco ISE. Remember with 802.1x it is a three tier system there is a supplicant, (a machine that wants to authenticate), the Authenticator, (the device the supplicant connect to, in our case a switch), and finally an Authentication server (Cisco ISE). Below I will add our switch into ISE, as a RADIUS device and create some groups, and locations for...

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