Routing of IP packets

Upon completion you will be able to: Review the features of an ATM WAN, understand how an a datagram can pass through an ATM WAN, understand how an IP packet is encapsulated in cells, understand how cells are routed in an ATM network, understand the function of ATMARP.

28p tangtuy09 26-04-2016 36 2   Download

This chapter describes the delivery and forwarding of IP packets. Delivery refers to the way a packet is handled by the underlying networks under the control of the network layer. Concepts such as direct and indirect delivery are discussed. Forwarding refers to the way a packet is delivered to the next station. We discuss two trends in forwarding: forwarding based on destination address of the packet and forwarding based on the label attached to the packet.

38p tangtuy09 26-04-2016 52 3   Download

In this chapter, you learned to: Describe OSPF terminology and operation within various enterprise environments, describe the function and operation of packets in OSPF routing, configure and verify basic OSPF, describe and configure OSPF in various WAN network types,...

192p youcanletgo_01 29-12-2015 41 2   Download

RIP version 2 is not a new protocol—it is RIP Version 1 with some additional fields in the route update packet, key among them being subnet mask information in each route entry. The underlying DV algorithms in RIP-2 are identical to those in RIP-1, implying that RIP-2 still suffers from convergence problems and the maximum hop- count limit of 16 hops.

13p dienham63 14-12-2015 59 4   Download

Topology A Cisco 1841 router has the following interfaces: Two Fast Ethernet interfaces: FastEthernet 0/0 and FastEthernet 0/1 Two serial interfaces: Serial 0/0/0 and Serial0/0/1 l The interfaces on your routers can vary. Packet Tracer Activities are referenced throughout these chapters for additional practices.Unlike most user PCs, a router will have multiple network interfaces. l These interfaces can include a variety of connectors.

110p vanmanh1008 21-05-2013 66 5   Download

Type: OSPF packet type: Hello (Type 1), DBD (Type 2), LS Request (Type 3), LS Update (Type 4), LS ACK (Type 5). Router ID: ID of the originating router. Area ID: Area from which the packet originated. Network Mask: Subnet mask associated with the sending interface. Hello Interval: Number of seconds between the sending router’s Hellos. Router Priority: Used in DR/BDR election (discussed later). Designated Router (DR): Router ID of the DR, if any. Backup Designated Router (BDR): Router ID of the BDR, if any. List of Neighbors: Lists the OSPF Router ID of the neighboring router(s)...

111p vanmanh1008 21-05-2013 52 4   Download

Link-State Routing Process 1. Each router learns about its own links, its own directly connected networks. (Interface is “up”) 2. Each router is responsible for meeting its neighbors on directly connected networks. (OSPF Hello packets) 3. Each router builds a link-state packet (LSP) containing the state of each directly connected link. (neighbor ID, link type, and bandwidth) 4. Each router floods the LSP to all neighbors, who then store all LSPs received in a database. Neighbors then flood the LSPs to their neighbors until all routers in the area have received the LSPs. 5.

51p vanmanh1008 21-05-2013 69 6   Download

A border router configured to pass or reject packets based on information in the header of each individual packet can theoretically be configured to pass/reject based on any field but usually done based on: protocol type IP addres TCP/UDP port Fragment number Source routing information

25p muathu_102 28-01-2013 66 3   Download

Used to communicate IP status and error messages between hosts and routers Uses IP to route its messages between hosts Must be implemented with IP remember, IP is just a packet delivery system transmits and routes datagrams from sources to destinations through a series of interconnected networks it has a checksum in the IP header to detect lost bits no error detection on the datagram payload though but has no native mechanism for source host notification This is where ICMP comes in its used to report IP errors to the source host ICMP data is carried as the payload of an IP datagram specifie...

19p muathu_102 28-01-2013 51 3   Download

Small frequently issued packets Discover neighbours and negotiate "adjacencies" Verify continued availability of adjacent neighbours Hello packets and Link State Advertisements (LSAs) build and maintain the topological database Hello packets are addressed to 224.0.0.5.

128p coc_xanh 15-01-2013 80 12   Download

VLSM and CIDR. Objectives: Compare and contrast classful and classless IP addressing. Review VLSM and explain the benefits of classless IP addressing. Describe the role of the Classless Inter-Domain Inter Domain Routing (CIDR) standard in making efficient use of scarce IPv4 addresses In addition to subnetting, it became possible to summarize a large collection of classful networks into an aggregate route, or supernet.

42p thanhtung_hk 05-11-2010 126 34   Download

Identify the role of the Network Layer, as it describes communication from one end device to another end device Examine the most common Network Layer protocol, Internet Protocol (IP), and its features for providing connectionless and best-effort service Understand the principles used to guide the division or grouping of devices into networks Understand the hierarchical addressing of devices and how this allows communication between networks Understand the fundamentals of routes, next hop addresses and packet forwarding to a destination network ...

64p thangvu89 15-04-2010 210 33   Download

This lab focuses on the ability to connect two simple LANs, each consisting of a workstation and a switch or hub, to form a basic router-to-router WAN. A router is a networking device that can be used to interconnect LANs which routes packets between different networks using Layer 3 IP addressing. Routers are typically used to connect the Internet. In addition to the physical and data link connections, which are layers 1 and 2, the computers and routers must also be configured with the correct IP network settings, which is Layer 3, so that they can communicate.

7p thanhha 27-08-2009 144 15   Download