osi layer protocols and functions

allowed, and communication between them still requires routers. 4) Comparison of vro functions: vro provides firewall services. A vro only forwards data packets of a specific address. It does not support packet transmission through the routing protocol or unknown destination network, thus preventing broadcast storms. The switch is generally used for the LAN-WAN connection, the third layer switch belongs to

content of the source address and destination address of the third-level data packet header. You can take corresponding actions based on the observed information, implement the key functions of bandwidth allocation, fault diagnosis, and access control over TCP/IP application data streams. The layer-4 switch optimizes the network through task allocation and Server Load balancer, and provides detailed traffi

It is very useful to know some basic router functions. Here we mainly analyze the practical application of the network layer in the basic router functions. Traditionally, a router operates on Layer 3 of the OSI Layer 7 Protocol. I

At present, layer-3 routing switches are widely used. Here we mainly introduce the differences between layer-3 routing switches and routing functions. As we mentioned earlier, layer-3 routing switches also have certain "routing" functions to achieve connections between diffe

Layer-7 network protocol functions layer functions in the TCP/IP family OSI TCP/IP protocol family www.2cto.com Application Layer file transmission, email, file service, virtual terminal TFTP, HTTP, SNMP, FTP, SMTP, DNS, RIP, Tel