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How to create and apply Cisco Extended Access List

Access list a rule that filters a traffic going through a router interface. Unlike Standard Access List, Extended Access List permits or denies traffic based on source, destination, port, or service. You would normally apply Extended Access List on the…
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How to create and apply Cisco Standard Access List (ACL)

Access List (ACL) is rule that filters a network traffic incoming to router interface or outgoing from a router interface. Each ACL’s rules tell the router which packets to discard, and which to permit. Standard Access list filters the traffic…
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How to configure static route on Cisco router

Static route is form of routing protocol used to route or link up different networks on a router. It’s a manual entry on the router configuration that sends traffic to specific network to a known route. All static routes must…
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Interior Gateway Protocol (IGP)

IGP – Interior Gateway Protocol is used to exchange routing information between multiple routers in Autonomous System (single organization network). It consists group of other routing protocols such as Open Shortest Path (OSPF), Routing Information Protocol (RIP), Intermediate System to…
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Extend Trace Route (Tracert)

Trace Route is command based tool that is widely used to trace the data path to the destination device. For example, to check the path from my router to spidertip.com. I would type trace rout spidertip.com and that would show…
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How Extended Ping works

The ping (Packet InterNet Groper) command is a handy tool that is widely used to troubleshoot connectivity between two networked devices. It uses ICMP (Internet Control Message Protocol) to send query to remote device and generate echo replies. The regular…
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Stacking Cisco Switches – Useful commands

Switch stacking is process of combining two or more switches into single switch by using special cable called Stacking-cable and connecting them through their StackWise ports. Stacked switches become single unit switch. TO build a stcking, the OIS must be…
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VTP Prunning is way to reduce broadcast traffic going to unnecessary switches on your LAN especially when VTP is enabled. To enable VTP Prunning on your Cisco switch, use the commands below: SW03#conf t Enter configuration commands, one per line.…
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