Why Would a Layer 2 Switch Need an Ip Address
The Network layer adds a header including the source and destination IP address to generate a packet. Port 102 is a layer 3 port 1921682253 255255255248.
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Layer 3 switch or multilayer switch can do all the job of a layer 2 switch and additional static routing and dynamic routing as well.
. A Layer 3 switch is a special network device that has the functionality of a router and a switch combined into one chassis. The frame is then sent it to the Physical layer to transmit the bits. Port 103 trunk port that the SVI connect through to another device.
A layer 3 switch is a device that forwards traffic frames based on layer 3 information mainly through mac-address. Usually the default VLAN 1 acts like the switchs own NIC for connecting into a LAN to send IP packets. Layer 3 switch supports all switching features while also has some basic routing functions to route between the VLANs.
Much like the difference between Layer 3 and Layer 2 in the OSI the main difference between a Layer 2 switch and a Layer 3 switch is the routing function. Layer 3 switch is conceived as a technology to improve network routing performance on large LANs. The ip helper command was put on each SVI in the switch.
The connection on the switch to the router is a layer 3 connection with an IP of 1921682253 255255255248. The IP address is configured under a logical interface known as the management domain or VLAN. This packet is then sent to the Data Link layer.
It works in our network by simply allowing connected devices that are on the same subnet or virtual LAN VLAN to exchange information at lightning speed just like a switch that operates in the data link layer of the OSI model but it also has the IP routing. However to perform switch management over the network or use protocols such as SNMP the switch will need to have an IP address. A Layer 3 switch on the other hand can also do static routing and dynamic.
A Layer 2 switch only works with MAC addresses and doesnt interact with any higher layer addresses like an IP. That means a Layer 3 switch has both MAC address table and IP routing table and handles intra-VLAN communication and packets routing between different VLANs. All of my connections to the switch are as follows.
The Data Link layer adds a header containing the MAC address information to create a frame.
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