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Remove or Move Interface from VSAN Database

This will guide you through adding and removing interfaces from VSAN Database. Even though I have tested this on Cisco MDS 9124, the process is virtually the same on the Cisco Nexus platforms with a slight difference on interface names.

When you issue the command show VSAN membership will tell you which VSAN member an interface is part of.

Interfaces are usually in VSAN 1 being the default and it can be moved to other VSAN by using the following commend.

vsan database
 vsan 100 interface fc1/1

If you want to remove an interface from a particular VSAN, you need to move it back to VSAN 1.

How to flash Cisco Autonomous Access Point to Lightweight

The following method will enable a Cisco Aironet Autonomous Access Points to be converted into Lightwright mode by flashing the code. I have tested this on c1252 model but the same method should work as long as the models are supported by Cisco.

Download the recovery image and place it in the TFTP Server.

Remove the trailing .tar from the image filename, it should look something like the following.

Set the Laptop IP Address as follows…
IP Address:
Subnet Mask:
Default Gateway:
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How to check IPSec VPN Uptime Cisco IOS

Run the following command and find the Uptime:

show crypto session detail

How to remember BGP Selection Process

“We Love Oranges AS Oranges Mean Pure Refreshment”

W – Weight (Highest)
L – LOCAL_PREF (Highest)
O – Originate (local) routes that are advertise through the “network” command or redistributed from an IGP.
AS – AS_PATH (shortest)
O – ORIGIN Code (IGP > EGP > Incomplete)
MMED (lowest)
P – Paths (External > Internal)
RRID (lowest)

How to Clear IPSec VPN Remote Peer on Cisco IOS

The following command clears the crypto sessions for a remote IKE peer. You can use context sensitive help ? to find other options.


clear crypto session remote IP_ADDRESS


clear crypto session remote

Configure WPA2 (AES-CCMP) on Cisco 877w

It is possible to configure WPA2 (AES-CCMP) on a Cisco 877w Router and these are the steps required to achieve them.

First of all, do make sure you have the right IOS version. This is important because some versions of the IOS does not support the latest WPA2 Key Management type along with AES-CCMP Encryption. This configuration is based on the following IOS.

Cisco IOS Software, C870 Software (C870-ADVIPSERVICESK9-M), Version 12.4(22)T5, RELEASE SOFTWARE (fc3)

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