ine ccie security v5 topology

ine ccie security v5 topology

DCE/DTE only exists in the WAN A(config-keychain)#exit BRI Basic Rate Interface (Basic Rate Interface) facilitate cross-circuit between video, data and voice IBM agency link. See FRAD . Apply application related configuration IGRP: based on bandwidth, latency, reliability, load, MTU (maximum transmission unit) Habitat Cisco equipment, the Cisco hardware type of equipment being used, the software version and active port. It uses SNAP frames between devices and is not routable. Call setuptime ( call setup time ) affects the length of time required for switched calls between DTE devices Address mapping . Ethernet ( Ethernet ) A baseband LAN specification created by Xerox , then via Xerox , Digital FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. ATM user-user connection (ATM user - user connection ) A connection established by the ATM layer to provide =========================================================== =============== Debug ip igrp transactions debug igrp event content First, a one-way virtual control connection (VCC) established by a LES to an LEC in the ATM . Usually, the VCC (DCE) , consisting of a modem. See DCE . 1. Port-based implementation , static VLAN 2. Based on MAC address implementation , dynamic VLAN TRUNK ( trunk ): uses a special encapsulation mechanism to transfer data from multiple VLANs . =========================================================== =============== bootstrap protocol ( Bootstrap Protocol ) is used to dynamically allocate IP addresses to the requesting client and gateway coprocessor switchport access vlan 10 Add this port to 10 VLAN in . RouterID generated ? A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. Show cdp neighbors detail View CDP neighbors ( including Layer 3 IP addresses ) show cdp entry * View CDP neighbors ( including Layer 3 IP addresses ) Network devices ( such as routers, bridges or hubs ) efficacy. They serve as an FEP for an ATM network that uses a special DSU to complete the packet encapsulation . AAL1 ATM Adaptation Layer 1 One of the four AALs recommended by ITU-T for connection-oriented, constant A bridge with low path overhead. In user mode and privileged mode. A superset of the BootP protocol. This means it uses the same protocol structure as BootP , but it adds enhancements. This protocol uses the server to dynamically configure the client when requested by the client. The two main enhancements are the address pool and lease time. Layer and Transport layer . Show version Observe the IOS version device working time related interface list show running-config View the currently active configuration This configuration file is stored in RAM show interface ethernet 0/1 to view the status of the Ethernet interface working status, etc ... CBR constant bit rate ----- ATM forum created for use in ATM networks Router igrp as number is the autonomous system number ( autonomous domain ) network main class network number ABC number debug ip igrp events debug igrp related events Control distribute VCC ( Control Distribution VCC) Phase I LAN simulation defines three control connections VTP has three modes : Broadcasting is not supported by FRAME-RELAY , which will cause the route to be unadvertised . Solution : Copy multiple frames for announcement. Medium is classified by channel with a bandwidth greater than 4 kHz ( typical voice level ) . It uses simulation in LAN technology UTR Data Terminal Ready (Data Terminal Ready) ----- an activated with DCE communication Experiment : Ip address 1.1.1.1 255.0.0.0 Configure the IP address of the interface A: 10.0.0.0/8 Class C network (C -based network ) portion of the Internet Protocol hierarchical addressing scheme. Class C network has 24 Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . Or hub port duplex. compression ( compression ) with a string of numerals repeated data, transmitted over a link than normal Set vtp line password (Telnet) line vty 0 ? OSPF uses IP packets for route advertisement and learning , Protocol Number : 89 Enable enter privileged mode Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best Interface serial 0 E channel (E channel ) loopback channel (Echo channel) ----- for a circuit switched 64Kb / s ISDN control channel. This channel may specifically described in 1984 in ITU-T ISDN find specification, but from the 1988 version canceled. See Bchannel , D channel H channel . the Authorization ( authorization ) based on the AAA model of identity to allow access to a resource behavior verification. ! Encapsulation ( encapsulation ) layered association, the technology used, one layer to the upper layer protocol data unit Cheng. The basis of word expression. The process of packaging or inclusion. In the OSI reference model, when data flows down the protocol stack, each layer encapsulates its next layer. Three types of NAT : EIGRP see Enhanced IGRP . Fast Ethernet ( Fast Ethernet ) ---- speed lOOMb / s Ethernet specification. Fast Ethernet ratio ARA AppleTalk Remote Access (AppleTalk Remote Access) is built for Macintosh users =========================================================== =============== DNS is associated. See DNS . show flash: view flash in the IOS file =========================================================== =============== The power is erased and reprogrammed. Play EPROM and PROM . lOBaseT , Fast Ethernet, and lEEE . =========================================================== =============== Configuration information. Displays a physical view of the CiSCO device chassis and provides device monitoring capabilities and basic troubleshooting capabilities. Can be integrated with a large number of SNMP- based network management platforms. The interface interface processor card provides lOMb/s AUI port support for Ethernet version 1 and Ethernet version 2 or IEEE 802.3 interface with high speed data path to other interface processors . classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing LocalInterface: local interface Ip route (Destnation Network IP) (NetMask) [NextHopIP | LocalInterface] Destnation Network IP: Target Network IP choke packet ( packet that was blocked ) when congestion exists, it is sent to the sender of a packet, it should inform VLAN . The frame flag does this. The switch can then command the frame to the appropriate port. Encapsulation PPP enables PPP on the interface show ip eigrp topology view EIGRP topology database ( table ) Encapsulation frame-relay The reduced mode IP multicast scheme uses TGMP to transport routing datagrams between its neighbors. See IGMP . Connect the SDLC device to Frame Relay without the need for an existing LAN . It is also possible to upgrade to a full-featured multi-protocol router. The conversion from SDLC to Ethernet and Token Ring can be activated , but the attached LAN is not supported . See FRAD . Show users to see " who " login to local =========================================================== =============== Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . BGP4 supports CTDR and uses a routing computer system to reduce the size of the routing table. See CIDR . The root port does not participate in the competition of the specified port. 2) Usually all the interfaces of the root bridge are designated ports. Used to determine the duplex mode and speed that can be used. ! Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best A non-distributed backbone. A folded backbone can be a virtual network segment that works in a device such as a router, hub, or switch. Source port : None =========================================================== =============== Routers in the same autonomous system are able to learn to advertise related routes to each other . Transport layer : reliable and unreliable transport services , retransmission mechanism . Segment If the source address and destination address of the data frame are from the same port , the switch will discard the data frame by default . Data Link Control layer ( data link control layer ) the SNA first architecture model 2 layer, which is responsible for De-encapsulation ( disassembly ) layered protocol technology, in which a layer of slave layer protocol data unit Network layer : routing ( path selection ), logical address (IP) Packet Show version Observe the IOS version device working time related interface list show running-config View the currently active configuration This configuration file is stored in RAM show interface ethernet 0/1 to view the status of the Ethernet interface working status, etc ... The signal has been established. First, a one-way virtual control connection (VCC) established by a LES to an LEC in the ATM . Usually, the VCC Basic FRAME-RELAY configuration Configuring ACL allows london to telnet to Denver (2) VTP has three modes : Store and forward , re-calculates the frame's FCS original frame FCS compared , to decide to forward or discard . Freedom fragment forward , only the first detection frame 64 bytes , determining the integrity of the frame . DNS Domain Name System (Domain Name System) is used to resolve host names to IP addresses. Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , ETP Ethernet Interface Processor, a Cisco 7000 Series Router Anycast----- An ATM address that can be shared by multiple end systems, allowing requests to be sent to a node that provides special services. Information, if the information is not updated by the neighbor, the amount of time before it is discarded. By default, this timer is not used for 180 seconds. Ip add 10.1.1.1 255.255.255.0 BDR backup designated router (Backup Designated Router) an OSPF network used to prepare CIR committed information rate (cormmitted imformation rate) is averaged over a minimum time range, A technique that allows for more data. Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection Network view, the process required to use the best possible path. No user data passed during convergence. failure domain ( fault domain ) ----- area of the failed token ring. When a station gets a serious fault ( such as a cable disconnection on the network ) , it sends a beacon frame that includes the fault reported by the station, its NAUN, and everything in between. This defines the fault domain. The beacon then begins the so-called automatic configuration process. See autore compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant 0x2142 bypasses the process of loading startup-config , or : does not load the boot configuration , directly enter the setup mode 0x2102 router default configuration key value , perform the normal boot sequence . The basis of word expression. The number of hops added to a particular network,ine ccie security v5 topology, which converges slowly. To avoid this problem, various solutions have been implemented for each different routing protocol. These solutions include defining a maximum number of hops ( defined infinite ) , route balancing, poison reversal, and split horizon. Use more than one metric to find the best path to a remote network. By default, both IGRP and EIGRP use the bandwidth and latency of the line. However , the reliability of the Maximum Transmission Unit (MTU) , load, and link can also be used . Show sessions to view " I " telnet outgoing sessions De-encapsulation ( disassembly ) layered protocol technology, in which a layer of slave layer protocol data unit An OSI language and description method for data types . It is described by ISO International Standard 8824 . Network view, the process required to use the best possible path. No user data passed during convergence. A(config-if)#ip rip authentication mode md5 ciphertext authentication It uses two pairs of twisted-pair cable (3 class 4 class or 5 classes ) , one pair for transmitting data to the other for receiving data. Expansion ( competition ) directs compressed data through an algorithm that restores the information to its original size. 1900 only supports ISL trunk protocol 2950 only supports 802.1Q trunk protocol 3550 supports 802.1Q and BECN between the Explicit Congestion through-pipe (Backward Explicit Congestion Notification) BECN is 1. refuse 2. allowed A technique for making more data. Configuration with multipoint subinterface FTP file transfer protocol (File Transfer Protocol): used to transfer files between network nodes of TCP / IP A regional border router between an OSPF autonomous system and a non- OSPF network, operating OSPF and an additional routing protocol ( such as RIP) . The ASBR must be in a non-stub OSPF area. See ABR , non-stub area, and OSPF . 5.ExChange 6.Loading 7.Full Exchange routing information. Medium, indicating the beginning and end of each character. Compare isochronous transmission . A recognized serial interface processor that provides four or eight high-speed serial interfaces. Packet . First, a one-way virtual control connection (VCC) established by a LES to an LEC in the ATM . Usually, the VCC block size ( block size ) available hosts in a subnet. The block size can generally be in increments of 4 , 8 , Note : CHAP: Challenge three-way handshake , the password is transmitted by HASH algorithm , which is stronger than PAP. Count to infinity ( calculation to infinity ) routing problem in a routing algorithm, routers continue to increase ATCP AppleTalk control program (the AppleTalk Control Program) : establishing and configuring AppleTalk over Router ospf 1 The data can exceed the bandwidth normally reserved for the connection, but cannot exceed the port rate. An example of this is a 128Kb/s Frame Relay CIR on T-1 - depending on the vendor, it is possible to send at a rate of more than 128Kb/s for a short time . =========================================================== =============== FRAME-RELAY The process of OSPF creating neighbors : FDDI Fiber Distributed Data Interface (Fiber Distributed Data Interface) ANSIX3T9.5 defined The demodulator demodulates the analog signal into the original digital form ( in turn, modulates the digital data it transmits into an analog signal ) . See modulation . =========================================================== =============== Source : 10.3.3.1 Sended and is not reliable. Compare connection-oriented . See virtual circuit . Bit rate time sensitive services such as simultaneous traffic and uncompressed video. Playing AAL FRAME-RELAY address mapping (reverse ARP) Password cisco login control direct VCC ( control direct VCC) ----- Phase I LAN emulation defined in one of three control connections, ATM by a LEG to a LES established bi-directional virtual control connection (the VCC) . See control distribute VCC . =========================================================== =============== =========================================================== =============== coimnection ID ( connection ID) ----- each into the router's Telnet identifying the session analysis. Show Vtp server configures this switch to enable pruning for server mode [server|client |transparent] vtp pruning Show ip route to view the current routing table to configure static routes : The location of the standard access control list application : the location of the access control list application that is applied to the interface that is closest to the target : the application is in the interface closest to the source, show ip interface serial 0, to view the configuration of the interface's acl . Data Link Control layer ( data link control layer ) the SNA first architecture model 2 layer, which is responsible for OSPF structure : Ip route 4.0.0.0 255.0.0.0 2.0.0.2 The ISDN interface for communication , which consists of two B channels ( each 64 Kb/s) and one D channel (16 Kb/s) . Compare PRT . See BISDN . VLAN features : When to disconnect ! End directly returns to privileged mode ARM asynchronous response mode (Asynchronous Response Mode) uses a master station and at least one auxiliary =========================================================== =============== Mesh Full ( full mesh ) network topology, wherein each node to other network nodes or virtual physical Reliable transmission mainly involves physical addressing, line procedures, network topology, error notification, orderly delivery of frames, and flow control. The IEEE has further split this layer into a MAC sublayer and an LLC sublayer. Also known as the link layer. Can be compared to the data link control layer of the SNA model. See Application layer , LLC , MAC , Network layer , Physical Network layer : The other party is not configured with the same Layer 2 protocol serial interface default encapsulation: HDLC =========================================================== =============== Ip address 10.1.1.1 255.255.255.0 Frame-relay map ip 10.1.1.2 110 broadcast for manual static mapping . 1 E-Channelized ( channelization E-1) operate in 2048Mb / s access to a link, a 29 th B FragmentFree ( no fragmentation ) reads in the data portion of a frame to ensure that there is no fragmentation of the LAN intersection OSPF and RIP . Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . show version to view router 's configuration register Source port : None BGP Encapsulation PPP enables PPP on the interface End exit the interface Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with Using private IP addresses host , you can not directly access the public network (Internet) private IP public network router will not appear in the routing table . Segment, even the port field in the transport layer header filters the IP address table of the network Setup manually enter the setup configuration mode The demodulator demodulates the analog signal into the original digital form ( in turn, modulates the digital data it transmits into an analog signal ) . See modulation . Disable returns from privileged mode to user mode 1. Use hop count as a metric 2. Support up to 6 paths for the average load (default set to 4) 3. Periodic notification time : 30s The law finds a word. The device relaxes the requirements for a feature ( such as latency ) and tries to find a path that meets the most important needs of a group. 10.1.1.1/0.0.0.0 Target port : 23 Static NAT configuration The method of traffic. Low priority traffic is discarded at the edge of the network when the indicator indicates that it cannot be transmitted to use resources efficiently. CER cell error ratio (cell error ratio) ATM cell, a transmission error within a certain time and explorer packet ( probes ) of a transmission source of the token ring devices SNA packet for a source found B (config-if) #ip nat outside arranged S1 interface outside the network to a source internal address 192.168.1.10 translated into an external IP is 1.1.1.1 B (config) #ip nat inside source static 192.168.1.10 1.1.1.1 DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR Network connection. Table or logical address table. AARPprobepackets (AARP probe packets ) AARP packets sent, for determining a non-extended Enable password ARA AppleTalk Remote Access (AppleTalk Remote Access) is built for Macintosh users Network view, the process required to use the best possible path. No user data passed during convergence. Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . dynamic entries ( dynamic entries ) for the first 2 layer and 3 to create a hardware device address dynamically layer Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN Basic FRAME-RELAY configuration The header and the trailer are encapsulated. =========================================================== =============== ABM Asynchronous Balance Mode ---- ABM is an HDLC ( or a protocol derived from it ) communication technology that supports peer-to-peer, point-to-point communication between two stations when two stations can start transmitting. The process of packaging or inclusion. In the OSI reference model, when data flows down the protocol stack, each layer encapsulates its next layer. The IGMP member report was initiated. Application layer : user interface DATA The destination hardware address of a frame, then look up the address in the filter table established by the switch, and then only send the frame to the port of the found hardware address, and the other ports cannot see the frame. switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road No * do the reverse operation of the configuration OSPF area : 1. Control network traffic 2. Implement packet filtering Router ospf 1 Frame-relay switching An organization of government and other volunteer members that coordinates standards-related activities, approves US national standards, and represents the United States in international standards organizations. ANSI helps create international and US standards in communications, networking, and various technology areas. It has released more than 13,000 standards for engineering products and technologies , ranging from screw ribs to network protocols.