TFTP (Trivial File Transfer Protocol) is a lightweight file transfer protocol that is most commonly used for booting computers over a network or updating devices attached to the network.
What is the purpose of using the copy tftp flash command on a router? to back up the current IOS image to a server to restore the IOS image from a server to back up the router configuration to a server to restore the router configuration from flash
The Trivial File Transfer Protocol (TFTP) allows a local host to obtain files from a remote host but does not provide reliability or security. It uses the fundamental packet delivery services offered by UDP. The File Transfer Protocol (FTP) is the standard mechanism provided by TCP / IP for copying a file from one host to another. It uses the services offer by TCP and so is reliable and secure. It establishes two connections (virtual circuits) between the hosts, one for data transfer and another for control information.
FTP uses TCP.Usage of Transport Layer protocol (tcp or udp) depends upon various applications.Such as FTP uses TCP, TFTP uses UDP.
== == The basic difference between a web server and an application server is Webserver can execute only web applications i,e servlets and JSPs and has only a single container known as Web container which is used to interpret/execute web applications Application server can execute Enterprise application, i,e (servlets, jsps, and EJBs) it is having two containers 1. Web Container(for interpreting/executing servlets and jsps) 2. EJB container(for executing EJBs). it can perform operations like load balancing , transaction demarcation etc etc
The main differences between the two models are as follows: 1.OSI is a reference model and TCP/IP is an implementation of OSI model.2.TCP/IP Protocols are considered to be standards around which the internethas developed.The OSI model however is a "generic, protocol-independent standard."3.TCP/IP combines the presentation and session layer issues into itsapplication layer.4.TCP/IP combines the OSI data link and physical layers into the networkaccess layer.5.TCP/IP appears to be a simpler model and this is mainly due to the fact thatit has fewer layers.6.TCP/IP is considered to be a more credible model- This is mainly due to the fact because TCP/IP protocols are the standards around which the internet was developed therefore it mainly gains creditability due to this reason. Where as in contrast networks are not usually built around the OSI model as it is merely used as a guidance tool. 7.The OSI model consists of 7 architectural layers whereas the TCP/IP onlyhas 4 layers. 8.The TCP/IP design generally favors decisions based on simplicity, efficiency and ease of implementation
because TFTP is not capable of encrypting transmissions and FTP is.
Port 69 and UDP are used for tftp transmissions.
RouterC#cpoy tftp running-config [ cpoy tftp run ]
RouterC#copy running-config tftp [copy run tftp]
Either from below is possible:Link to TFTP server is temporarily damaged.Link to TFTP server is permanently damaged.TFTP is shut down.
it copies the ios FLASH to TFTP SERVER
to TFTP
Port 69 and UDP are used for tftp transmissions.
config tftp run
Nope, TFTP Relys on the UDP Checksums, and even those are optional, that's why its not used often exept for Bootloaders etc. Also there is no Encryption for tftp packets
TFTP server, Flash
TFTP uses UDP - TFTP stands for Trivial FTP, and it is called trivial because it does not check to ensure delivery, it uses UDP which makes a best-effort delivery attempt