Showing posts with label CCNA Training Videos. Show all posts
Showing posts with label CCNA Training Videos. Show all posts
Wednesday, September 16, 2015
Cisco CCNA VTP - VLAN Trunking Protocol
On Cisco Devices, VTP (VLAN Trunking Protocol) maintains VLAN configuration consistency across the entire network. VTP uses Layer 2 trunk frames to manage the addition, deletion, and renaming of VLANs on a network-wide basis from a centralized switch in the VTP server mode. VTP is responsible for synchronizing VLAN information within a VTP domain and reduces the need to configure the same VLAN information on each switch.
VTP minimizes the possible configuration inconsistencies that arise when changes are made. These inconsistencies can result in security violations, because VLANs can cross connect when duplicate names are used. They also could become internally disconnected when they are mapped from one LAN type to another, for example, Ethernet to ATM LANE ELANs or FDDI 802.10 VLANs. VTP provides a mapping scheme that enables seamless trunking within a network employing mixed-media technologies.
Cisco CCNA VTP - VLAN Trunking Protocol pkt Sample
Cisco CCNA - Autonomous System
This Video in Hindi by Jagvinder Thind Explains What is Autonomous System (AS).
autonomous system in Hindi. Autonomous System (AS) is a collection of connected Internet Protocol (IP) routing prefixes or Networks under the control of one or more network operators that presents a common, clearly defined routing policy to the Internet.
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Cisco CCNA Routing Metrics
This Video in Hindi by Jagvinder Thind Explains What is Routing Metrics. CCNA Training Video. Metrics is a property of a route in computer networking, consisting of any value used by a routing protocol to determine whether one particular route should be chosen over another. CCNA 200-120
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IP Addressing and Subnetting in Hindi
This Video Series in Hindi explains Basics of IP Address, IP Addressing, Subnet, Subnetting and VLSM in Hindi. VLSM is important topic in Cisco CCNA CCNP Exam
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Networking Devices Repeaters, Hubs, Bridges, Switches working in Hindi
All Videos Networking Devices Repeaters, Hubs, Bridges, Switches working in Hindi
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TCP and UDP port numbers
In computer networking, a port serves as an end point in an operating system for many types of communication. It is not a hardware device, but a logical construct that identifies a service or process.
A port is always associated with an IP address of a host and the protocol type of the communication, and thus completes the destination or origination address of a communications session. A port is identified for each address and protocol by a 16-bit number, commonly known as the port number.
Specific port numbers are often used to identify specific services. Of the thousands of enumerated ports, 1024 well-known port numbers are reserved by convention to identify specific service types on a host. The protocols that primarily use ports are the Transport Layer protocols, such as the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) of the Internet Protocol Suite.
In the client-server model of application architecture, ports are used to provide a multiplexing service on each port number that network clients connect to for service initiation, after which communication is reestablished on another connection-specific port number.
This list of well-known port numbers .
1 TCP Port Service Multiplexer (TCPMUX)
5 Remote Job Entry (RJE)
7 ECHO
18 Message Send Protocol (MSP)
20 FTP -- Data
21 FTP -- Control
22 SSH Remote Login Protocol
23 Telnet
25 Simple Mail Transfer Protocol (SMTP)
29 MSG ICP
37 Time
42 Host Name Server (Nameserv)
43 WhoIs
49 Login Host Protocol (Login)
53 Domain Name System (DNS)
69 Trivial File Transfer Protocol (TFTP)
70 Gopher Services
79 Finger
80 HTTP
103 X.400 Standard
108 SNA Gateway Access Server
109 POP2
110 POP3
115 Simple File Transfer Protocol (SFTP)
118 SQL Services
119 Newsgroup (NNTP)
137 NetBIOS Name Service
139 NetBIOS Datagram Service
143 Interim Mail Access Protocol (IMAP)
150 NetBIOS Session Service
156 SQL Server
161 SNMP
179 Border Gateway Protocol (BGP)
190 Gateway Access Control Protocol (GACP)
194 Internet Relay Chat (IRC)
197 Directory Location Service (DLS)
389 Lightweight Directory Access Protocol (LDAP)
396 Novell Netware over IP
443 HTTPS
444 Simple Network Paging Protocol (SNPP)
445 Microsoft-DS
458 Apple QuickTime
546 DHCP Client
547 DHCP Server
563 SNEWS
569 MSN
1080 Socks
Tuesday, September 15, 2015
BGP Routing Protocol
Border Gateway Protocol (BGP) is a standardized exterior gateway protocol designed to exchange routing and reachability information between autonomous systems (AS) on the Internet. The protocol is often classified as a path vector protocol, but is sometimes also classed as a distance-vector routing protocol. The Border Gateway Protocol makes routing decisions based on paths, network policies or rule-sets configured by a network administrator, and is involved in making core routing decisions.
BGP may be used for routing within an AS. In this application it is referred to as Interior Border Gateway Protocol, Internal BGP or iBGP. In contrast, the Internet application of the protocol may be referred to as Exterior Border Gateway Protocol, External BGP or EBGP.
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Inter VLAN Routing - Another Method - VLAN Tutorial
Inter VLAN Routing - Another Method - VLAN Tutorial Video
Inter VLAN Routing - Another Method.pkt
Router on a Stick Inter-VLAN Routing tutorial
• Reduce the size of the broadcast domain – Each VLAN is a unique broadcast domain – Different IP subnets
• No communication between VLANs
• Inter-VLAN routing is the process of forwarding network traffic from one VLAN to another VLAN using a router.
Router on a Stick Inter-VLAN Routing tutorial video
Router on a Stick Inter-VLAN routing.pkt
Cisco CCNA Security In English By Danscourses
CCNA (Cisco Certified Network Associate) is an IT certification from Cisco.
CCNA Security certification is an associate-level Cisco Career certification.
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Routing Protocols and concepts (Hindi)
Cisco CCNA Routing Protocols and concepts and Practicals on EIGRP OSPF RIP EtcA routing protocol specifies how routers communicate with each other, disseminating information that enables them to select routes between any two nodes on a computer network. Routing algorithms determine the specific choice of route. Each router has a priori knowledge only of networks attached to it directly. A routing protocol shares this information first among immediate neighbors, and then throughout the network. This way, routers gain knowledge of the topology of the network.
Although there are many types of routing protocols, major classes are in widespread use on IP networks:
Interior gateway protocols (IGPs) exchange routing information within a single routing domain. Examples of IGPs include: Open Shortest Path First (OSPF) Routing Information Protocol (RIP) Intermediate System to Intermediate System (IS-IS) Enhanced Interior Gateway Routing Protocol (EIGRP)
Exterior gateway protocols exchange routing information between autonomous systems. Examples include: Exterior Gateway Protocol (EGP) Border Gateway Protocol (BGP)
Autonomous Systems, such as Border Gateway Protocol (BGP), Path Vector Routing Protocol.
Some versions of the Open System Interconnection (OSI) networking model distinguish routing protocols in a special sublayer of the Network Layer (Layer 3).
The specific characteristics of routing protocols include the manner in which they avoid routing loops, the manner in which they select preferred routes, using information about hop costs, the time they require to reach routing convergence, their scalability, and other factors.
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