troubleshooting tcp ip show and debug

... Step 10 The show tcp commands Type the show tcp ? command to see TCP activity Particularly the show tcp statistics command gives a good summary of TCP traffic sent and received SanJose1 #show ... keepalive SanJose1 #show tcp brief Step 11 The debug ip rip command Type the debug ip rip command to see the result of RIP routing activities The timestamp on the left side shows the frequency ... between the show ip interface command and the show interface command As you saw in the examples the show ip interface command displays the status of features and options on the interface The show interface...

Ngày tải lên: 18/01/2014, 05:20

... Size TCP Checksum Urgent Pointer Options Data TCP Implementation Multiplexing Data Sequencing and Acknowledgment Flow Control TCP Connection Management TCP Open Initial Sequence Number (ISN) TCP ... The Push Flag TCP Sliding Windows Slow Start and Congestion Avoidance Nagle Algorithm Data Protection Case Study: TCP Checksum Errors TCP Expert Symptoms TCP Application Analysis TCP and Throughput ... read many good books on the TCP/ IP protocol, including W Richard Stevens’ TCP/ IP Illustrated (Addison-Wesley January 1994) and Douglas Comer’s Internetworking with TCP/ IP (Prentice Hall January...

Ngày tải lên: 14/08/2014, 12:20

... sent TCP packet to the same destination IP address and TCP port numbers TCP Reset Inactive Connection The sender has set the Reset (RST) flag in a TCP packet TCP Reset Connection One end of a TCP ... the source IP host TCP Zero Window The recipients TCP receive buffer is filling up (low window) or full (zero window) TCP Too Many Retransmissions The source IP node is sending another TCP packet ... recovery time and throughput TCP Slow Acknowledgement The recipient appears to be slow in acknowledging TCP data segments TCP Retransmission The source IP node is sending another TCP packet with...

Ngày tải lên: 14/08/2014, 12:20

... of the AND operation are that a AND = and a AND = The subnet mask is a pattern of ones and zeros you use to compare to the IP address, performing the AND operation on each bit of the IP address ... 00-7A-3D-15-B2-23 IP: 172.16.1.1 IP: 172.16.1.2 IP: 172.16.1.3 Client A Client B Client C IP: 172.16.1.1 MAC : 00-5C-7A-84-13-75 Server Figure 3-6 IP and NetBEUI network A node using the IP protocol ... even on, and its IP stack was nonfunctioning Reserved Addressing IP addresses are really just a series of 32 binary digits that make up the entire 4-byte IP address Hosts and routers on an IP network...

Ngày tải lên: 14/08/2014, 12:20

... Destination Address Figure 3-26 IPv6 header format The IPv6 Header Figure 3-26 shows the format of the IPv6 header The following shows an EtherPeek NX decode of the IPv6 header IP Version Header - Internet ... encrypt the data it sends across the network IPv6 uses the same security methods defined in the IPsec standards for IPv4 ■ ■ Network Service IPv6 retains IPv4’s ability to prioritize a packet’s transmission ... length, and protection of the IP header Packet flow fields, such as Type of Service, Fragmentation, and Time to Live, handle the end-to-end delivery of packets and problems with their transfer Multiplexing...

Ngày tải lên: 14/08/2014, 12:20

... 10.239.1.82 10.239.1.82 10.239.1.80 RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP RIP Response, 25 Entries (ver 1) Response, ... 69/udp 70 /tcp 79 /tcp 80 /tcp 88 /tcp 88/udp 101 /tcp 102 /tcp 107 /tcp 109 /tcp 110 /tcp 111 /tcp 111/udp 113 /tcp 117 /tcp 119 /tcp 123/udp 135 /tcp 135/udp 137 /tcp 137/udp 138/udp 139 /tcp 143 /tcp 158 /tcp 161/udp ... print-srv bgp irc ipx ldap 7 /tcp 7/udp 9 /tcp 9/udp 11 /tcp 11 /tcp 13 /tcp 13/udp 17 /tcp 17/udp 19 /tcp 19/udp 20 /tcp 21 /tcp 23 /tcp 25 /tcp 37 /tcp 37/udp 39/udp 42 /tcp 42/udp 43 /tcp 53 /tcp 53/udp 67/udp...

Ngày tải lên: 14/08/2014, 12:20

... tracemasters.com Server Source Server mail4.bellatlantic.net HTTP TCP HTTP TCP TCP TCP TCP Protocol DNS DNS Info Standard query A www.tracemasters.com Standard query response CNAME tracemasters.com A 216.119.99.47 ... take note of: ■ ■ TCP Zero Window ■ ■ TCP Stuck Window 217 218 Chapter ■ ■ TCP Low Window ■ ■ TCP Idle Too Long ■ ■ TCP Long ACK The second group of symptoms deals with how TCP is transferring ... wait and acknowledge all of the data with a single TCP acknowledgment rather than waste network bandwidth on individual ACKs Figure 6-28 Ethernet IP TCP HTTP Browser JAY Request (Frame 4) TCP...

Ngày tải lên: 14/08/2014, 12:20

... The figure shows the following: In Frames to 9, you see the normal FTP command and reply activity, with the last command set being the PORT command to tell the FTP server the IP address and port ... first and second digits FTP reply code categories from RFC 959 are listed in Table 7-5 265 266 Chapter Table 7-4 FTP Command Code Descriptions COMMAND DESCRIPTION ABOR Abort previous FTP command ... the PORT command, the client sends the PASV command in Frame 21 This PASV command is exactly opposite of the PORT command In Frame 23, you see the server responding with the port and IP address...

Ngày tải lên: 14/08/2014, 12:20

... chapter SMB Commands SMB commands are organized into top-level commands and subcommands A top-level command will specify the subcommand below it, and the subcommand will specify any subcommands below ... (ACK) Dest IP Addr 255.255.255.255 Source IP Addr Frame (Request) Dest IP Addr 255.255.255.255 Source IP Addr Frame (Offer) Dest IP Addr 255.255.255.255 Source IP Addr Source IP Addr Source IP Addr ... of UDP and TCP to provide clients and servers with various session-layer services such as name resolution, name registration, and resource location N OT E NetBIOS over TCP/ IP concepts and methods...

Ngày tải lên: 14/08/2014, 12:20

... \\ServerName\pipe\PipeName, where the ServerName is the name of the remote computer where the named pipe is located, and the PipeName is the name of the named pipe In Figure 8-22, I show a Windows ... ID: 65279 User ID: 2048 Multiplex ID: 48 Microsoft-Related Protocols Tree Connect AndX Request (0x75) Word Count (WCT): AndXCommand: No further commands Reserved: 00 AndXOffset: 76 Flags: 0x0008 ... 2048 Process ID: 65279 User ID: 2048 Multiplex ID: 48 Tree Connect AndX Response (0x75) Word Count (WCT): AndXCommand: No further commands Reserved: 00 AndXOffset: 56 Optional Support: 0x0001...

Ngày tải lên: 14/08/2014, 12:20

... NetBIOS over TCP/ IP NBTSTAT and, 314–315 NetBIOS names, 312–314 operations, 320–329 overview of, 312 services, 315–320 NetBIOS over TCP/ IP name server option (DHCP), 309 NetBIOS over TCP/ IP node type ... system requirements, 369–370 T TCP Checksum field, 182, 215–217 TCP Close, 192–193 TCP Half-Close, 193 TCP Open, 185–192 TCP Reset, 194–200 TCP retransmissions, 274 TCP (Transmission Control Protocol) ... failure, 276–278 commands and reply codes, 265–269 failure through firewall, 273–276 passive transfer failure, 272–273 PASV command, 271 PORT command, 269 TCP connections and, 268 G gateway, 82,...

Ngày tải lên: 14/08/2014, 12:20

... rights reserved xix TCP/ IP and System p: http://www.ibm.com/systems/p/library/index.html TCP/ IP and System i: http://www.ibm.com/servers/eserver/iseries/tcpip/index.html TCP/ IP and System x: http://www.ibm.com/servers/eserver/support/xseries/allproducts/insta ... protocols include IP version 6, quality of service protocols, and wireless IP TCP/ IP Tutorial and Technical Overview Chapter Architecture, history, standards, and trends Today, the Internet and World ... in the desktop and small computer market In the meantime, TCP/ IP and the Internet were developing rapidly, with deployment occurring at a very high rate 1.3 TCP/ IP standards TCP/ IP has been popular...

Ngày tải lên: 23/12/2013, 02:19

... telecommunications, and security, Ted teaches in the Networking and Security product lines and focuses on TCP/ IP, networking fundamentals and CISSP preparation He currently holds CISSP certification and has ... are many other techniques and tools for troubleshooting the physical and data link layers The ones suggested above are the most common and easiest for most people to use Troubleshooting OSI Layer ... use of a protocol analyzer in troubleshooting requires a substantial knowledge of the layer protocols, TCP, and UDP The analyzer shows each element of the datagram and each part of the associated...

Ngày tải lên: 17/01/2014, 06:20

... rights reserved xix TCP/ IP and System p: http://www.ibm.com/systems/p/library/index.html TCP/ IP and System i: http://www.ibm.com/servers/eserver/iseries/tcpip/index.html TCP/ IP and System x: http://www.ibm.com/servers/eserver/support/xseries/allproducts/insta ... protocols include IP version 6, quality of service protocols, and wireless IP TCP/ IP Tutorial and Technical Overview Chapter Architecture, history, standards, and trends Today, the Internet and World ... in the desktop and small computer market In the meantime, TCP/ IP and the Internet were developing rapidly, with deployment occurring at a very high rate 1.3 TCP/ IP standards TCP/ IP has been popular...

Ngày tải lên: 27/01/2014, 08:20

... TCP: Three way handshaking A B TCP: Window and Acknowledgment TCP: Sliding window and Acknowledgment TCP: Sequence and acknowledgment TCP: Sequence and acknowledgment Transport Layer: TCP ... description of the features and operation of well-known TCP/ IP applications Table of Content TCP/ IP Transport Layer TCP/ IP Application Layer TCP/ IP TRANSPORT LAYER Introduction to transport layer ... • Describe TCP and UDP header formats • Describe TCP and UDP port numbers • List the major protocols of the TCP/ IP application layer • Provide a brief description of the features and operation...

Ngày tải lên: 16/02/2014, 07:20

... rights reserved xix TCP/ IP and System p: http://www.ibm.com/systems/p/library/index.html TCP/ IP and System i: http://www.ibm.com/servers/eserver/iseries/tcpip/index.html TCP/ IP and System x: http://www.ibm.com/servers/eserver/support/xseries/allproducts/insta ... protocols include IP version 6, quality of service protocols, and wireless IP TCP/ IP Tutorial and Technical Overview Chapter Architecture, history, standards, and trends Today, the Internet and World ... in the desktop and small computer market In the meantime, TCP/ IP and the Internet were developing rapidly, with deployment occurring at a very high rate 1.3 TCP/ IP standards TCP/ IP has been popular...

Ngày tải lên: 18/02/2014, 00:20

... the standardization of a new generation of IP, often called IPng, was supported by the Internet Engineering Task Force (IETF) IPng is now known as IPv6 Version 3.0 TCP/ IP Model The TCP/ IP model ... of TCP/ IP • The U.S Department of Defense (DoD) created the TCP/ IP reference model because it wanted a network that could survive any conditions • The TCP/ IP model has since become the standard ... OSI and TCP/ IP Both have application layers, though they include very different services TCP/ IP combines the presentation and session layer into its application layer Combines the Data Link and...

Ngày tải lên: 27/06/2014, 19:20

... understanding of the TCP/ IP protocol suite and its set of support protocols for Windows-based network This includes an understanding of the architecture of the TCP/ IP protocol suite, IP addressing, ... 219 Figure 11-1: A TCP connection showing both inbound and outbound logical pipes 224 Figure 11-2: The TCP connection establishment process, showing the exchange of three TCP segments ... (MCTs) This book can be a standard reference for MCSEs and MCTs for the TCP/ IP protocol suite ■ General technical staff Because this book is mostly about TCP/ IP protocols and pro- cesses, independent...

Ngày tải lên: 09/08/2014, 09:21

... header and an IP datagram IP datagrams and ARP messages sent over FDDI networks also have the following constraints: ■ Only 6-byte FDDI source and destination addresses can be used ■ All IP and ... 1332 and 1877 describe the NCP for IP called Internet Protocol Control Protocol (IPCP) IPCP is used to negotiate an IP address, the addresses of name servers, and the use of the Van Jacobsen TCP ... 2008 and Windows Vista also support a unicast ARP Request and unicast ARP Reply exchange and a broadcast ARP Reply The ARP or Neighbor Cache As is common in many TCP/ IP implementations, TCP/ IP...

Ngày tải lên: 09/08/2014, 09:21

... protocols, such as TCP/ IP, and the additional PPP facilities of compression and encryption IPCP IPCP is used to automatically configure TCP/ IP configuration for a calling PPP peer IPCP as used by ... LCP LCP LCP LCP LCP LCP LCP CHAP LCP LCP CHAP CHAP CBCP CBCP CBCP CCP IPCP CCP CCP IPCP IPCP CCP IPCP IPCP IPCP IPCP IPCP Description Configure-Request, ID = Configure-Request, ID = Configure-Ack, ... networks and serves only as an example of a mixed-media subnet Fragmentation and TCP/ IP for Windows Server 2008 and Windows Vista TCP/ IP for Windows Server 2008 and Windows Vista supports IP fragmentation...

Ngày tải lên: 09/08/2014, 09:21