It is in the bottom of the layer which is used for transferring electrical signals one point to another point.
Data link layer
It transfers data frame one place to another destination with error free transmission over the link.
It controls operation of ip and subnets, here frame is converted to packets for transmission.
It creates end to end virtual circuits, makes error correction and flow control to avoid congestion and data loss.
It coordinates different sessions at a time, it separately manages creating, maintaining and terminating the communication sessions.
The presentation layer provides a variety of coding and conversion of functions that are applied by the application data.
The application layer is directly connected with end user who will interact with it, and when identifying communication partners, the application layer determines to identify the communication partner and transfer to data.
EASY VIRTUL NETWORK (EVN)
Easy virtual network is derived from one physical network , distributes the data through virtualization which creates the path send and recieve, security is ensured and one network and another network is not colluded.
- Simplify Layer 3 network virtualization
- Improve shared services support
- Enhance management, troubleshooting, and usability
The IPv6 128-bit addresses are represented as a series of eight 16-bit hexadecimal fields separated by
colons in the format: n:n:n:n:n:n:n:n. This is an example of an IPv6 address:
For easier implementation, leading zeros in each field are optional. This is the same address without
You can also use two colons (::) to represent successive
IPv6 Address Type
Table 1 Compressed IPv6 Address Formats
Loopback address ::1 as same as ipv4 127.0.0.1
:: Unspecified address is when the node is newly initialized is used unspecified address until source address is presented.
Global unique address : It is used for internet purpose and is public address , routable and starts with 2001/3(001)
unique local address routable no t public (starts with (FC OR FD))
Link local address fe80::/10
multicast address FF00::/8
anycast ipv6 address 2001:db8:1::1/64 anycast (any cast means one ip address with multiple devices connected with same address)