How to configure Trunking between VLANs with ISL?

Trunking is a technique to carry different VLAN traffic using point to point link between two devices. ISL (InterSwitch Link) is a cisco proprietary protocol can work with Ethernet token ring and Fddi also. Trunking changes the formatting of the packets. The ports need to be in agreement as to which format is being use to transmit data on the trunk, if there is different trunking encapsulation on the two ends of the link they will not able to communicate. Similar situation will occur if one of your ports is configured in trunking mode and other one as in access mode. First create multiple VLANs with name, assign multiple ports to them then create...

Read more »

Posted in: Cisco

How to configure Trunking between VLANs with 802.1q?

Trunk link is used to carry the different VLANs traffic on a single link. There are two different protocols are used for Ethernet trunking, 802. 1q and ISL. Trunking change the formatting of the packets. The ports need to be in agreement as to which format is being use to transmit data on the trunk, if there is different trunking encapsulation on the two ends of the link they will not able to communicate. Similar situation will occur if one of your ports is configured in trunking mode and other one as in access mode. First create multiple VLANs with name, assign multiple ports to them then create 802.1q trunk link between the two switches to allow ...

Read more »

Posted in: Cisco

How to configure VTP Client and Server?

VTP (VLAN Trunking Protocol) is the protocol that propagates the information about which VLANs exist from one switch to another switch. If VTP did not provide this information, VLANs would have to be created on all switches individually in the network.VTP is a Cisco proprietary protocol. The default mode of a switch is configured as VTP server. In any case, the server services are turned off, use the following command to turn it back on as VTP server.     SwitchA#vlan database    SwitchA(vlan)#vtp server    SwitchA(vlan)#exitFirst create multiple VLANs with name, assign multiple ports to them then create 802.1q trunk link between the two switches to allow communication between VLANs. To ...

Read more »

Posted in: Cisco

How to hide your important data from other users?

 Normally when you need to secure your important data from other users, then your first choice is to burn it on CD or put it to removable drive instead of hard drive. But imagine if your data size is more than 100 GB then it is not easy to burn it on CD. No worry, you can save your full drive from other users access using this trick.Perform the given steps to hide your system data partition:     To enable this feature, you will need to be logged into your computer with administrative rights.          First click on Start button to open "Run" and type "CMD" (without the quotes) then press Ok button to open Command Prompt. Now type diskpart on the blinking cursor and wait for 5...

Read more »

Posted in: Computer Tricks,Tips