Types of IPv6 Unicast Addresses (33.1.3)An IPv6 unicast address uniquely identifies an interface on an IPv6-enabled device. A packet sent to a unicast address is received by the interface that is assigned that address. Similar to IPv4, a source IPv6 address must be a unicast address. The destination IPv6 address can be either a unicast…
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IPv6 Addressing – Cisco 100-150 Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: Key Terms This chapter uses the following key terms. You can find the definitions in the Glossary.Extended Unique Identifier (EUI-64)global routing prefixglobal unicast address (GUA)interface IDlink-local address (LLA)Router Advertisement (RA) messageRouter Solicitation (RS) messagesolicited-node multicast addressStateless Address Autoconfiguration (SLAAC)stateful DHCPv6stateless…
IPv6 Neighbor Discovery – Cisco 100-150 Guide
Objectives Upon completion of this chapter, you will be able to answer the following questions: • What is the operation of IPv6 neighbor discovery? Key Terms There are no new terms in this chapter. Introduction (34.0) Webster here! Halimah is still investigating her company’s network. She is impressed with the way the IT team has…
Introduction to an IPv4 Routing Table
Introduction to an IPv4 Routing Table (32.2.6)Notice in Figure 32-10 that R2 is connected to the internet. Therefore, the administrator configured R1 with a default static route sending packets to R2 when there is no specific entry in the routing table that matches the destination IP address. R1 and R2 are also using OSPF routing…
Static Routing – Cisco 100-150 Guide
Static routes are route entries that are manually configured. Figure 32-6 shows an example of a static route that was manually configured on router R1. The static route includes the remote network address and the IP address of the next hop router. Figure 32-6 Static Routing Example If there is a change in the network…
Routing Tables – Cisco 100-150 Guide
This topic will introduce the role of the router in the routing process and an introduction their use of routing tables for forward packets. Router Packet Forwarding Decision (32.2.1) The previous topic discussed host routing tables. Most networks also contain routers, which are intermediary devices. Routers also contain routing tables. This topic covers router operations…
Default Gateway – Cisco 100-150 Guide
Default Gateway (32.1.2) The default gateway is the network device (i.e., router or Layer 3 switch) that can route traffic to other networks. If you use the analogy that a network is like a room, then the default gateway is like a doorway. If you want to get to another room or network you need…
Routing at the Network Layer
Objectives Upon completion of this chapter, you will be able to answer the following questions: • How do network devices use routing tables to direct packets to a destination network? • What is the function of fields in the routing table of a router? Key Terms This chapter uses the following key terms. You can…
Contention-Based Access — CSMA/CA
Another form of CSMA used by IEEE 802.11 WLANs is carrier sense multiple access/collision avoidance (CSMA/CA). CMSA/CA uses a method similar to CSMA/CD to detect if the media is clear. CMSA/CA uses additional techniques. In wireless environments it may not be possible for a device to detect a collision. CMSA/CA does not detect collisions but…
Contention-based Access – Cisco 100-150 Guide
Contention-based Access In contention-based multiaccess networks, all nodes are operating in half-duplex, competing for the use of the medium. However, only one device can send at a time. Therefore, there is a process if more than one device transmits at the same time. Examples of contention-based access methods include the following: • Carrier sense multiple…