Ethernet Switching Summary (21.5) The following is a summary of each topic in the chapter and some questions for your reflection. What Did I Learn in this Module? (21.5.1) • Ethernet—There is no official local area networking standard protocol, but over time, one technology, Ethernet, has become more common than the others. Ethernet protocols define…
Find the Destination MAC Address
Find the Destination MAC Address If the destination MAC address is a unicast address, the switch will look for a match between the destination MAC address of the frame and an entry in its MAC address table. If the destination MAC address is in the table, it will forward the frame out the specified port….
Basic vs Standard pricing tiers
Basic vs Standard pricing tiers Public IP addresses are available at two pricing tiers (or SKUs): Basic or Standard. All public IP addresses created before the introduction of these tiers are mapped to the Basic tier. Standard tier public IP addresses support zone-redundant deployment, allowing you to use availability zones to protect your deployments against…
The MAC Address Table – 100-150 Exam Guide
The MAC Address Table (21.4) Compared to legacy Ethernet hubs, Ethernet switches improve efficiency and overall network performance. Although traditionally most LAN switches operate at Layer 2 of the OSI model, an increasing number of Layer 3 switches are now being implemented. This section focuses on Layer 2 switches. Layer 3 switches are beyond the…
Unicast MAC Address – 100-150 Exam Guide
Unicast MAC Address (21.3.2) In Ethernet, different MAC addresses are used for Layer 2 unicast, broadcast, and multicast communications. A unicast MAC address is the unique address that is used when a frame is sent from a single transmitting device to a single destination device. In Figure 21-8, the destination MAC address and the destination…
Create a VNet peering using the Azure portal
Create a VNet peering using the Azure portalTo create a peering connection between two VNets, the VNets must already have been created and must not have overlapping address spaces.To create a new VNet peering from VNet-hub to VNet-spoke, connect to the Azure portal and locate VNet-hub. Under Settings, click Peerings, and then click Add to…
Ethernet Frame Fields – 100-150 Exam Guide
Ethernet Frame Fields (21.2.4) The minimum Ethernet frame size is 64 bytes and the expected maximum is 1518 bytes. This includes all bytes from the destination MAC address field through the frame check sequence (FCS) field. The preamble field is not included when describing the size of the frame. Note: The frame size may be…
Service chaining and hub-and-spoke networks
Service chaining and hub-and-spoke networks A common way to reduce duplication of resources is to use a hub-and-spoke network topol- ogy. In this approach, shared resources (such as domain controllers, DNS servers, monitoring systems, and so on) are deployed into a dedicated hub VNet. These services are accessed from multiple applications, each deployed to their…
Ethernet Frames – 100-150 Exam Guide
Ethernet Frames (21.2) Ethernet operates in the data link layer and the physical layer. It is a family of networking technologies that are defined in the IEEE 802.2 and 802.3 standards. Ethernet Encapsulation (21.2.1) This module starts with a discussion of Ethernet technology including an explanation of MAC sublayer and the Ethernet frame fields. Ethernet…
Ethernet Switching – 100-150 Exam Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • How do the OSI model Layer 1 and Layer 2 function in an Ethernet network? • How do the Ethernet sublayers are related to the frame fields? • What is the Ethernet MAC address? • How does a switch…