tcp ip illustrated volume 2

Chapter I. OverviewChapter II Internet address structureChapter Three link LayerFourth Chapter Address Resolution ProtocolFifth Chapter Internet ProtocolSixth. System configuration: DHCP and automatic configurationSeventh chapter firewall and network address translationEighth chapter ICMPV4 and icmpv6:internet Control Message ProtocolNineth Broadcast and local multicast (IGMP and MLD)Tenth chapter User Datagram Protocol and IP Shard11th chapter name r

1. HTTP request format: Request-line Headers (0 or multiple) Body (valid only for post requests) The request-line format is: Request request-Uri HTTP Version Number 1) For a GET request, return any information specified by request-Uri. 2) A head request is similar to a GET request, but the server program only returns the header information of the specified document, excluding the actual document content. This request is usually used to test

;/*packetsreceivedoninterface*/u_longifi_ ierrors;/*inputerrorsoninterface*/u_longifi_opackets; /*packetssentoninterface*/u_longifi_oerrors;/* outputerrorsoninterface*/u_longifi_collisions;/* Collisionsoncsmainterfaces*/u_longifi_ibytes;/*totalnumberofoctets received*/u_longifi_obytes;/*totalnumberofoctets Sent*/u_longifi_imcasts;/*packetsreceivedviamulticast */u_longifi_omcasts;/*packetssentviamulticast*/ u_longifi_iqdrops;/*droppedoninput,thisinterface*/ u_longifi_noproto;/*destinedforunsuppor

Ping programThe ping program was written by Mike Muuss to test whether another host is available.The program sends an ICMP echo request message to the main clause and waits for an ICMP echo reply to be returned.The ping program can also detect the return time of this hostTraceroute ProgramThe Traceroute program is a handy tool to explore the TCP/IP protocol in more depthThe Traceroute program allows us to s

of the Next_hop attribute?What is the role of the Local_pref propertyWhat is the effect of the Multi_exit_disc attribute?The BGP speaker initiates an aggregated route which is useful for what or those attributes25. What is the administrative weight of BGP26. Assume that there are two routes to the same destination, one is EBGP and the other is IBGP, which route will be preferred by BGP27. The router has two routes to the same destination, the local_pref of path A is 300, and there are 3 as numb

This chapter describes the Internet Group Management Protocol (IGMP) that is used to support multicast for hosts and routersIt lets all systems on a physical network know which multicast group the host is currently in. Multicast routers require this information to know that multicast datagrams should be forwarded to those interfaces.Like ICMP, IGMP is also used as part of the IP layer, and IGMP packets are transmitted over an

==================================== Chapter 2 ==================================== Encapsulation formats of IEEE 802.2/802.3 (RFC 1042) and Ethernet (RFC 894) -------------------------------------------------------- Class A network number 1 2 7 is reserved for the loopback interface. According to the Convention, most systems allocate the I P address 1 2 7. 0. 0

A Send a connection request and wait for confirmation A, b Established Both establish a connection The four-time handshake close link is as follows:The specific steps are as follows:1.A send fin message, Mark Seq=m2.B after receiving fin message, send confirmation message, Mark Seq=m+1Fin messages are also sent after 3.B, labeled Seq=n4.A after receiving fin message, send confirmation message, Mark Seq=n+1At this point the two sides are disconnected, and

the IP multicast group. The network drive must be able to recognize this address. Level 2: The host can send and receive IP Multicast To receive IP multicast, the host must be able to join or leave Multicast Groups, and IGMP must be supported to exchange group member information on at least one interface. Multi-interf

request data. In the request, you can see that Ubuntu-2.local sent the ARP request.In the response message, the native responds to it and tells it its own hardware address. The response data length is 28.Then print out the local ARP cache entries, found that the addition of the second table, this shows that when the other host requests the hardware address of this host, but also add the hardware address of the end to the mapping table, so that later