Archive for June, 2022

Configuring GRE Tunnel

Posted: 29th June 2022 by ccna7guru in ITN

Introduction: Tunneling provides a mechanism to transport packets of one protocol within another protocol. The protocol that is carried is called as the passenger protocol, and the protocol that is used for carrying the passenger protocol is called as the transport protocol. Generic Routing Encapsulation (GRE) is one of the available tunneling mechanisms which uses […]

Troubleshooting VLANs and Trunks

Posted: 12th June 2022 by ccna7guru in Packet Tracer, SRWE
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List and briefly explain four common VLAN and trunk configuration errors:■ Native VLAN mismatches: Trunk ports are configured with different native VLANs. This configuration error generates console notifications, causes control and management traffic to be misdirected, and poses a security risk.■ Trunk mode mismatches: One trunk port is configured with trunk mode “off” and the […]

Dynamic Trunking Protocol (DTP) is a Cisco proprietary protocol that negotiates both the status oftrunk ports and the trunk encapsulation of trunk ports.A switch port on a Cisco Catalyst switch supports a number of trunking modes. The trunking modedefines how the port negotiates using DTP to set up a trunk link with its peer port. […]

VLAN Concepts

Posted: 12th June 2022 by ccna7guru in SRWE
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Defining VLANsA VLAN allows a network administrator to create groups of logically networked devices based onfunctions, departments, or project teams.For computers to communicate on the same VLAN, each must have an IP address and a subnet maskthat belong to the same subnet and are consistent for that VLAN. The switch has to be configuredwith the […]

RIP Characteristics and RIP Timers

Posted: 12th June 2022 by ccna7guru in Packet Tracer, SRWE
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RIP Characteristics: RIP has the following key characteristics: RIP is a distance vector routing protocol. RIP uses hop count as its only metric for path selection. Advertised routes with hop counts greater than 15 are unreachable. Messages are broadcast every 30 seconds. RIP TimersIn addition to the update timer, the IOS implements three additional timers […]

Understanding VLAN Trunk Protocol (VTP)

Posted: 12th June 2022 by ccna7guru in ITN
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Understanding VTP VTP is a Layer 2 messaging protocol that maintains VLAN configuration consistency by managing the addition, deletion, and renaming of VLANs on a network-wide basis. VTP minimizes misconfigurations and configuration inconsistencies that can result in a number of problems, such as duplicate VLAN names, incorrect VLAN-type specifications, and security violations.  You can use […]

By default, the switchport security feature is disabled on all switchports and must be enabled. Table 1 shows the steps required to enable the switchport security feature on an interface (This can cause some confusion, but when using Cisco IOS, switchport configuration is performed while in interface configuration mode. The terms interface and switchport are interchangeable). Enter privileged mode router>enable […]