Layer 3 switches were conceived as a technology to improve network routing performance on large

Routing operates at layer 3, where packets are sent to a specific next-hop IP address, based on destination IP address. ... Kuliah Jaringan Komputer Sesi 45: Network Layer Control Plane (9)- Routing Protocols - SDN Part 2 - Duration: 2:57. When configuring Layer 3 subinterfaces, follow these guidelines and restrictions: A Layer 3 switch is a specialized hardware device used in network routing. This chapter consists of these sections: • Layer 3 Interface Configuration Guidelines and Restrictions • Configuring Subinterfaces on Layer 3 Interfaces • Configuring IPv4 Routing and Addresses • Configuring IPX Routing and Network Numbers • Configuring AppleTalk Routing, Cable Ranges, and Zones • Configuring Other Protocols on Layer 3 Interfaces Layer 3 switch supports all switching features, while also has some basic routing functions to route between the VLANs. The next few articles will step deeper into the routing methods and protocols that are used on real networks. Layer 2 Spanning Tree Protocol This is how a layer 3 switch acts as both a switch and a router. To configure IPv4 routing and an IPv4 address on a Layer 3 interface, perform this task: To configure a subinterface, perform this task: John Moy describes this decision process in "OSPF: Anatomy of an Internet Routing Protocol" (Section 3.2 "Encapsulation) very interesting by stating pros and cons.

Routing protocols, according to the OSI routing framework, are layer management protocols for the network layer, regardless of their transport mechanism:

This example shows how to enable IPX routing and assign an IPX network address to interface VLAN 100:

It's important to note that, regardless of the method used, they all have the same basic mission: routing a message from point A to point B. By using Lifewire, you accept ourCommon Questions and Answers on the OSI Network ModelThe Differences Between Routers, Switches, and HubsIntroduction to LANs, WANs, and Other Kinds of Area Networks This chapter contains information about how to configure Layer 3 interfaces in Cisco IOS Software Release 12.2SX.

So-called routing protocols are the family of network protocols that enable computer routers to communicate with each other and in turn to intelligently forward traffic between their respective networks. To configure routing protocol you have to configure it the way you do on normal routers. This chapter contains information about how to configure Layer 3 interfaces in Cisco IOS Software Release 12.2SX. This example shows how to configure an IPv4 address on Fast Ethernet port 5/4: Exists IPv4 routing protocol configuration mode. When configuring Layer 3 subinterfaces, follow these guidelines and restrictions: To configure IPv4 routing and an IPv4 address on a Layer 3 interface, perform this task: The key difference between Layer 3 switches and routers lies in the hardware internals.

Layer 3 is responsible for all packet forwarding between intermediate routers, as opposed to Layer 2 (the data link layer), which is responsible for media access control and flow control, as well as error checking of Layer 1 processes. See these publications for information about configuring other protocols on Layer 3 interfaces: Routing parameters for each VLAN interface must also be specified. While Layer 2 switches can be used, layer 2 switches would have to be uplink connected to a layer 3 switch. Exists IPv4 routing protocol configuration mode.

When you enable IPX routing on the interface, you can also specify an encapsulation type. A layer 3 switch is a device that forwards traffic (frames) based on layer 3 information (mainly through mac-address). (Required only if IPv4 routing is disabled.) This example shows how to enable IPX routing and assign an IPX network address to interface VLAN 100: Devices in the same layer 2 segment do not need routing to reach local peers. The naming has caused much confusion in the marketplace. See these publications for information about configuring other protocols on Layer 3 interfaces: When configuring IPv4 routing and addresses, follow these guidelines and restrictions: Basic Layer 3 Routing Concepts. This example shows how to enable AppleTalk routing and assign an AppleTalk cable-range and zone name to interface VLAN 100:

This would allow for the layer 3 switch to act as the traffic cop for the layer 2 switch. Features of a layer 3 … To configure routing for AppleTalk, perform this task beginning in global configuration mode:

Selects an interface and enters subinterface configuration mode. Selects an interface and enters subinterface configuration mode.

When configuring Layer 3 interfaces, follow these guidelines and restrictions: This example shows how to enable AppleTalk routing and assign an AppleTalk cable-range and zone name to interface VLAN 100: Enables IPv4 routing. Enables IPv4 routing. For complete information and procedures, see these publications: BUT very imp is that by default "ip routing" is disable you have to enable it first for any routing to work. For complete information and procedures, see these publications: The layer 2 switch would have to directly uplink to a layer 3 switch. When configuring Layer 3 interfaces, follow these guidelines and restrictions: The naming of these switches comes from concepts in the OSI model, where layer 3 is known as the Network Layer. Layer 2, and 3 refer to the layers of the OSI model, but it doesn’t fully explain the functional differences.The term layer 2 switch is a switch that forwards packets based on MAC addresses.

Without going too deep in to technical terms, this factoid is designed to give an overview of basic Layer 2 and 3 LAN switching.If you aren’t familiar with the OSI model you can research it on your own. Make sure you enable "ip routing" command on global config mode.

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