What is L2 switch and l3 switch?
What is L2 switch and l3 switch?
Layer 2 switches are used to reduce traffic on the local network, whereas Layer 3 switches mostly used to Implement VLAN. The advantage of Layer 2 switches is that it helps to forward packets based on unique MAC addresses. The advantage of Layer 3 switches offers flow accounting and high-speed scalability.
What is the difference between Layer 1/2 and 3 switches?
Simply put, a layer 3 switch can forward packets between different networks like a router while layer 2 switches forward packets to different segments/or within a given network.
What is difference between layer 2 and layer 3?
Layer 2 of the OSI model is known as the data link layer. The Layer 2 protocol you’re likely most familiar with is Ethernet. Layer 3 is the network layer and its protocol is the Internet Protocol or IP. Devices in an IP network are identified by an IP address, which can be dynamically assigned and may change over time.
What is the difference between router and L3 switch?
Hardware/Software decision making – The key difference between Layer 3 switch and router lies in the hardware technology used to making forwarding decision. Layer 3 switch uses ASICs for forwarding decisions. Conversely, the router makes forwarding decisions based on hierarchical Layer-3 addresses.
How is a L2 switch different from a L3 switch?
Assume we have a Layer 2 switch which has 3 different VLANs configured on it. If a host on VLAN 2 wants to communicate with a host on VLAN 3 (belonging to a different Layer 3 subnet) the L2 switch is not able to route the traffic between VLANs. Now, assume we have a Layer3 switch with 3 different VLANs.
What are the pros and cons of L2 switches?
L2 switches does not allow you to implement any intelligence while forwarding packets. Does not helps you to perform switching or IP address-based routing. Here are the cons/drawbacks of Layer2 switching: The cost of the L3 switch is quite high compared to the Layer 2 switch. Layer 3 switch does not offer WAN functionality.
How is a layer 3 switch different from a layer 2 switch?
A layer 3 switch includes the functionality of a layer 2 switch and also is able to use layer 3 information (IP addresses) to make its forwarding decisions. So a layer 3 switch is aware of subnets and networks in addition to being aware of VLANs. A layer 3 switch builds a layer 2 forwarding table to be able to forward within a VLAN.
How many L2 switches are in an organization?
Organization is consists of 10 depts, by 15-20 employees per department. Each department has own office with a 24 port L2 switch Catalyst 2950T and all PCs and printers in every dept are connected to that switch. All 10 switches are connected to L2 switch Catalyst 2970G-24TS-24.