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Step 1 :  S tart the system and unplug the power cable few times  immediately. After few abnormal shut down system will prompt for Startup Repair option. Step 2 : System will prompted with two options in the boot screen (again), select the first option - "Launch Start-up Repair(recommended)" Step 3 : Wait for Scan to complete Step 4 : Click on " Cancle " option Step 5 : After some time an error report screen will pop-up, asking to send information or not.  click on "View Problem Details" , scroll down to the end of the report, then click a link stating X:\windows\ (the link starts with an"X") Step 6 : Window will pop-up, and will look like a notepad Click File then select Open, and another window will pop-up Navigate to C: drive (drive on which windows is installed), click Windows, then System32, after that click on the arrow beside the "File Type" option and select "all files" Step 7

To configure the Lotus Notes client Step 1: Click Start, then type notes then click Lotus Notes. Because this is the first time you have run Lotus Notes, the Lotus Notes Client Configuration Wizard starts. Click Next. Step 2: On the Welcome page, select online and click Next. Step 3: When prompted, type in the name you set up for the user ID for Lotus Notes and enter the name of Domino server. Select I want to connect to a Domino server. Click Next. On the How Do You Want to Connect to a Domino Server page, select Set up a connection to a local area network (LAN), and then click Next. Step 4: On the Domino Server Network Information page, leave the setting as it is and click next. Step 5: When asked if you want the User ID file copied to your data directory, click Yes. Type in the password for the user ID file. Step 6: If prompted to set up Instant Messaging, clear the Setup instant messaging check box, and then click Next. Step 7: On the Additional

To communicate between different VLAN with a router or L3 Switch Router On A Stick (ROAS) R1(config)#interface fastEthernet 0/0 R1(config-if)#no shutdown R1(config-if)#exit R1(config)#interface fastEthernet 0/0.10 R1(config-subif)#encapsulation dot1Q 10 R1(config-subif)#ip address 192.168.10.254 255.255.255.0 R1(config-subif)#exit R1(config)#interface fastEthernet 0/0.20 R1(config-subif)#encapsulation dot1Q 20                 R1(config-subif)#ip address 192.168.20.254 255.255.255.0 Above you can see my two sub-interfaces and the IP addresses that I assigned to them. IP address 192.168.10.254 will be the default gateway for computers in VLAN 10 and 192.168.20.254 for computers in VLAN 20. SVI (Switch Virtual Interface) SW(config-if)#interface vlan 10 SW(config-if)#ip address 192.168.10.1 255.255.255.0 SW(config-if)#no shu SW(config-if)#interface vlan 20 SW(config-if)#ip address 192.168.20.1 255.255.255.0 SW(config-if)#exit

VLAN Trunking Protocol (VTP) is a Cisco proprietary protocol that propagates the definition of Virtual Local Area Networks (VLAN) on the whole local area network. To do this, VTP carries VLAN information to all the switches in a VTP domain. VTP advertisements can be sent over 802.1Q, and ISL trunks. Three VLAN division with three broadcast domain VTP pruning is a feature in cisco switches, which stops VLAN updates information traffic from being sent down trunk links if the updates are not needed. VLAN 1 can never be prune because it’s an administrative VL AN. VTP Pruning VTP-SERVER Switch1(config)#vtp domain VtpDomain Switch1(config)#vtp password VtpPassword Switch1(config)#vtp pruning VTP-CLIENT Switch2(config)#vtp mode client Switch2(config)# vtp domain VtpDomain Switch2(config)# vtp password VtpPassword VTP-TRANSPARENT Switch3(config)#vtp mode transparent Switch3(config)# vtp domain VtpDomain Switch3(config)# vtp password VtpPasswo

Vlan : Virtual Local Area Network subdivide a network into virtual LANs. Creating seperate broadcast domain. Access Port: An access port transports traffic to and from only the specified VLAN allotted to it Trunk Port: A trunk port is a port that is assigned to carry traffic for all the VLANs that are accessible by a specific switch, a process known as trunking. Trunk ports mark frames with unique identifying tags – either 802.1Q tags or Interswitch Link (ISL) tags – as they move between switches. Therefore, every single frame can be directed to its designated VLAN. Vlan Creation: switch# configure terminal switch(config)# vlan 15 switch(config)# name Test Access Port switch# configure terminal switch(config)# interface ethernet 1/13 switch(config-if)# switchport mode access switch(config-if)# switchport access vlan 15 Trunk Port switch(config)# interface ethernet 1/14 switch(config-if)# switchport mode trunk switch(config-if)#switchport trunk encapsulation

Learning subnetting is much easier that it looks. All you need is basic understanding of  IP Addressing and Maths Formulas Of Subnetting 1. Number of Valid Host (2n-2) Where n is number of Host bits (0's) 2. Number of Valid Network (2y) Where y is number of borrowed Network bits   (1's) NOTE : With ip-subnet command we can use 1st & last ip NOTE : Block size remain same for all classes Learn the following table or save it for solving subnetting much faster.   Wild Card is always 1 less then block size. Example : \30 Wildcard will be (Block size -1) (4-1) =3 \30= 0.0.0.3