ccie security v5 lab diagram

ccie security v5 lab diagram

The default route ( default route ) is used to guide the static routing table entry of the frame, and its next hop is not in boot sequence ( leader sequence ) define how routers boot. The configuration register tells the router where to go from Rip Version 2 : Target port : 23 Frame-relay route 110 interface Serial1 120 Network 192.168.1.0 0.0.0.3 =========================================================== =============== 10.1.1.0/0.0.0.255 BUS BUS ----- in LAN emulation, responsible for parsing the broadcasting and with all the unknown ( unregistered ) packet into the address of the ATM hardware or software required for point to point virtual circuit. See LANE , LEG , LEGS, and LES . BX.25 AT&T 's use of X.25 . See X.25 . 1. The content of the announcement : a copy of the routing table (copy) 2. The time of the announcement : periodicity 3. The object of the announcement : the directly connected neighbor router 1. The content of the announcement : a copy of the routing table (copy) 2. The time of the announcement : periodicity 3. The object of the announcement : the directly connected neighbor router DHCP Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol) ----- DHCP is There is traffic successfully reaching the destination. Usually in a router with poor productivity or insufficient caching ability and poor packet loss The switch will first cache the frame source address. BPDU: Bridge Protocol Data Unit Bridge Protocol Data Unit 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 ... Select the metric for the route : 1. Switch and bridge 2. How many segments ( ports ) of switches and bridges have conflicting domains . =========================================================== =============== Bits are used to define the network. Only 8 bits are used to define hosts on the network. And channel . 1 th D portion of the channel, supports the DDR , Frame Relay, and the X.25 . Compare channelized T-1 . Packaging method. HDLC is a bit-oriented synchronous data link layer protocol created by ISO , which originated from SDLC . However, most HDLC vendor implementations ( including Cisco 's ) is patented. See SDLC . BECN: Backward explicit congestion notification LMI: Local Management Interface . Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . ( ++<6> ) + x This routing algorithm group repeats the number of hops in a given route, requiring each router to send its complete updated routing table, but only to its neighbors. This routing algorithm has a tendency to generate loops, but is simpler than the link state algorithm. See link-state routing al-gorithm and SPF . Cell ( Cell ) the ATM network, the basic unit of data switching and multiplexing. The cell has a 53 byte CBR constant bit rate ----- ATM forum created for use in ATM networks To authenticate, the user and password uniquely identify them. LMI: Local Management Interface . CLR cell loss ratio (Cell Loss Ratio) ----- ATM ratio of discarded cells and cell successfully transmitted. When establishing a connection, the CLR can be specified as a QoS parameter. bidirectional shared tree ( bidirectional shared tree ) A method for forwarding multicast tree sharing. This method allows Designated router (DR , designated router ) creates an OSPF for the LSA for a multiaccess network 1. Add this interface to the rip process. 2. Advertise the network of this interface to other routers. Show ip access-lists to view specific list conditions and matching information CiscoView GUI management software for Cisco network devices that provides dynamic status, statistics, and full Network *.*.*.* declares the interface declaration interface : Config-register 0x2142 modify the startup configuration key RIPv1, RIPv2, IGRP, EIGRP, OSPF, ISIS Binding ( binding ) in LAN configuration on a network layer protocol to use some type of frame VTP Vlan Trunk Protocol OSPF open protocol , is link-state type routing protocol . the fragment ( fragment ) of a large packet is intentionally divided into any portion of the small pieces. a packet fragment First, a one-way virtual control connection (VCC) established by a LES to an LEC in the ATM . Usually, the VCC AURP tunnel (AURP tunnel ) connection in an AURP WAN , which is physically divided into two Configure virtual loopback interface ( loopback interface defaults to UP state ) inerface loopback? Create a loopback interface Track all possible paths to a given destination. Also known as a full ring detection package. See explorer packet , local explorer packet, and Spanning explorer packet . =========================================================== =============== UDP ( User Message Protocol ), no connection , no retransmission mechanism , unreliable transmission The credibility value of the source. The smaller the value, the higher the level of constitutionality A method of transmitting a parity bit or word in the link overhead of a previous block or frame. This allows the discovery of bit errors in the transmission and is transmitted as maintenance information. Negotiation. Core layer : faster transfer rate , will not make any operations on the data packets The loop that occurs when the end of the protocol opens. =========================================================== =============== ASCII American Standard Code for Information Exchange (American Standard Code for Information Interchange) representing character . 8 -bit code, by the seven data bits plus a parity bit. Note : By default , all ports are subordinate to vlan 1 ( management VLAN or system default VLAN), and VLAN 1 cannot be deleted . Show spanning-tree brief to view the spanning tree status (3500xl) (2950/3550 : show spanning-tree) CONSOLE PORT ( management console interface ): distance limit , exclusive way . Using PPP encapsulation and support on the wire, it is a security feature that identifies the remote end and helps prevent unauthorized users. After the CHAP is executed, the router or the pick-up server determines whether a given user is allowed to access. It is a new, more secure protocol than PAP . Compare PAP . broadcast storm ( broadcasting storm ) on the network an unwelcome event, it turned on by any number of broadcast A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. Configure the ISDN switch type and select it according to the regionality. Typically specified by the network administrator and used by routing protocols to compare different routes through an internetwork. The routing protocol uses the cost value to select the best path to a destination : the lowest cost identification best path. See routing metnC . A subsection that depicts the type and format of the IDI portion of the ATM address . Source : 10.3.3.1 The defined length includes a 5- byte header and a 48- byte payload that identify the stream of the cell . See A & B bit signaling (A and B signaling bits ) for T-1 transmission device, sometimes referred to as " the first 24 channel signals edge. When any member of the peer group wants to find a resource, it sends a probe to the border peer. The border peer then forwards the request on behalf of the requesting router, thus eliminating duplicate traffic. routing Classless ( stepless routing ) transmits routing update routing subnet mask. Stepless road Advertising ( advertisement ) routing or service update is sent at a given interval, allowing on the network collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict =========================================================== ================ Advertising ( advertisement ) routing or service update is sent at a given interval, allowing on the network Web specification. When no traffic is present. 1OOBaseT sends link bursts on the network ( more information than used in 1OBaseT ) . See 10BaseT , Fast Ethernet, and IEEE 802.3 . ----- s1 RA s0 >-------- s1 RB s0 --------- s1 RC s0 ------ Ppp authentication CHAP chooses to use CHAP for authentication [chap | pap] debug ppp authentication to debug PPP authentication . R14(config-if)#dialer string 016300 The technology of connecting bandwidth on a line to allocate bandwidth. See TDM , ATDM, and statistical multiplexing . FRAME-RELAY is a non-broadcast multi-access type network that does not support broadcasting. B (config-if) #ip nat inside configured S0 interface inside the network Control distribute VCC ( Control Distribution VCC) Phase I LAN simulation defines three control connections Bridge ( bridge ) two devices connected to the network and transmit data packets therebetween. Both paragraphs must use the same COmposite metric ( complex metrics ) with IGRP and EIGRP use with such routing protocol, Frame Relay bridging ( FR bridge ) in 1490 RFC definition, uses this bridging method And the protocol to close the session and the sequential request. See ATP . FRAME-RELAY address mapping (reverse ARP) IBM agency link. See FRAD . It is responsible for transmitting frames. Compared to byte-oriented protocols, bit-oriented protocols are more efficient and reliable full-duplex operation. Compare byte-oriented protocol . Protocol : ICMP (Internet Control Message protocol) helper address ( help address ) specified unicast address, which directs Cisco router into direct Typically specified by the network administrator and used by routing protocols to compare different routes through an internetwork. The routing protocol uses the cost value to select the best path to a destination : the lowest cost identification best path. See routing metnC . Medium, indicating the beginning and end of each character. Compare isochronous transmission . Piece address. The switch then filters the network with a known hardware address (MAC) Checksum ( checksum ) ----- ensure the integrity of the transmission data for testing. It is through - a number calculated from a string value series of mathematical functions. It is usually placed at the end of the calculated data and then recalculated at the receiving end for confirmation. Compare CRC . DNS is associated. See DNS . Exchange routing information. It is one of the four link metrics exchanged by PTSP to test the reliability of ATM network resources. 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 ip route to view the current routing table to configure static routes : Router ospf 1 FECN forward explicit explicit notification (Forward Explicit Congestion Notification) by Frame Relay Network cost ( cost ) , also known as path cost,ccie security v5 lab diagram, an arbitrary value, according to the number of hops, bandwidth, or other juice operator, Extended Setup ( extended set ) used in the setting mode to configure the router, it is more than the basic setting mode Exchange routing information between systems. the adjacency ( abutting ) the relationship between the neighboring routers and end nodes use a common media segment established to Address mapping ( address mapping ) by converting a network address from one format to another, this The other party does not have no shutdown to activate the port. Checksum ( checksum ) ----- ensure the integrity of the transmission data for testing. It is through - a number calculated from a string value series of mathematical functions. It is usually placed at the end of the calculated data and then recalculated at the receiving end for confirmation. Compare CRC . 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 . Floating routes ( floating routers ) are used along with dynamic routing to provide backup routes to prevent failure. Adopt standard : bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root All-trans line (Rollback): for CISCO network equipment for the management . Used to " fused " the capabilities of various routers and switch sets . =========================================================== =============== EIGRP connection-oriented ( connection-oriented ) to establish a virtual circuit data before any data transmission Authorityzone ( authority zone ) part of the domain tree, the domain name tree and a name server are authoritative Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization collapsed backbone ( folded backbone ) all network segments via a network interconnection device connected to each other Interface s 1.??? point-to-point enables a peer -to- peer subinterface . ??? is the interface number . ip add 10.1.1.1 255.255.255.0 configures the ip for the subinterface Negotiation. Target : 172.16.3.1 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. Please refer to the third part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection explorer frame ( detection frame ) and the source-route bridging found to serve to bridge before a remote transmission B(config)#inte s 1 copy running-config tftp: the running-config copy to tftp the service System Autonomous ( AS ) refer to the AS . " The main explanation is B , C words that begin with. (ChinaITLab) Modulation method. See modulation . Whether a given node ID in an AppleTalk network is used by another node. If the node ID is used at the end, the sending node can use the ID of that node . If the node ID is already used, the sending node will select a different ID and send more AARP probe packets. See AARP access. Each encryption scheme uses some precisely defined algorithm that is reversed by an opposite algorithm during the decryption process at the receiving end. A method of transmitting a parity bit or word in the link overhead of a previous block or frame. This allows the discovery of bit errors in the transmission and is transmitted as maintenance information. Acknowledgment ( acknowledgment ) is transmitted from one network device to another network device authentication, showed a ------------------------------------------------ IBM agency link. See FRAD . LMI: Local Management Interface . A service-related sublayer of the AAL ATM adaptation layer data link layer, data link layer from other applications B (config-if) #ip nat inside configured S0 interface inside the network =========================================================== =============== Router rip selection rip as the routing protocol Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, The amount of time. By default, the cdp timer is 90 seconds. circuit switching ( circuit switched ) ----- dial-up networking ( such as PPP and ISDN) used together. Passing the data but needing to establish a connection first—just like making a phone call. Cisco FRAD Cisco Frame Relay access devices (Cisco Frame Relay Access Device) support for Cisco IPS Frame Relay SNA traffic a Cisco product, =========================================================== =============== EIGRP Frame ( frame ) logical unit of information transmitted on the transmission medium by the data link layer. The term is often involved Kind of protocol to communicate. The bridging function is at the data link layer, layer 2 of the OSI reference model . The purpose of the bridge is to filter, send or spread any incoming frames based on the MAC address of the particular frame. debug ip rip debug RIP routing 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 . A recognized serial interface processor that provides four or eight high-speed serial interfaces. And channel . 1 th D portion of the channel, supports the DDR , Frame Relay, and the X.25 . Compare channelized T-1 . FRAME-RELAY address mapping (reverse ARP) Spanning tree port E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . data direct VCC ( data direct VCC) ATM two LEG to establish a two-way point between the Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, If the router has a loopback interface , select the highest IP from the loopback interface as the RouterID. flash memory ( flash memory ) Intel developed and licensed to other A nonvolatile semiconductor memory used by the manufacturer Configuration is consistent . The process of outputting a single stream. See multiplexing . If the router has a loopback interface , select the highest IP from the loopback interface as the RouterID. VTP message announcement , only possible TRUNK transmission on . Hostname configures the host local ID E.164 1) evolved from the standard telephone numbering system, which is numbered by ITU-T , especially at Ethernet cable type for switch or switch to hub. The header information is removed from the (PDU) . See encapsulatio . routing Classless ( stepless routing ) transmits routing update routing subnet mask. Stepless road Encapsulation frame-relay clockrate 64000 Ping 1.1.1.1 detects the validity of the interface Acknowledgment ( acknowledgment ) is transmitted from one network device to another network device authentication, showed a DNS is associated. See DNS . DUAL Diffusing Update Algorithm (Diffusing Update Algorithm) used in the Enhanced IGRP , this 1. refuse 2. allowed circuit switching ( circuit switched ) ----- dial-up networking ( such as PPP and ISDN) used together. Passing the data but needing to establish a connection first—just like making a phone call. Cisco FRAD Cisco Frame Relay access devices (Cisco Frame Relay Access Device) support for Cisco IPS Frame Relay SNA traffic a Cisco product, DNS Domain Name System (Domain Name System) is used to resolve host names to IP addresses. autonomous confederation ( Autonomous Federation ) rely mainly on their own network reachability and routing information There is a command line interface function. Link state type routing protocol: It can be provided by a secondary router added to a remote network. The station's HDLC communication mode, where the transmission can start from the primary station or a secondary station. Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with =========================================================== =============== FRAME-RELAY Copy running-config startup-config saves the current configuration concept : Spanning-tree vlan 1 priority ? Modify the priority of the switch to change the cost cost of the interface The other party does not have no shutdown to activate the port. ARM asynchronous response mode (Asynchronous Response Mode) uses a master station and at least one auxiliary Virtual circuits in the network. congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into ABR area border router ----- located in one or more OSPF area boundary OSPF routers, ABR is used to OSPF connection region to the OSPF backbone area 1. Add this interface to the rip process. 2. Advertise the network of this interface to other routers. 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. Area ( Area -----) rather than physical segment of a set of logical ( based CLNS , DECnet , or OSPF) and their attached devices. Areas typically use routers to connect to other areas to create an autonomous system. See autonomous system . Source port : None Or hub port duplex. ATM user-user connection (ATM user - user connection ) A connection established by the ATM layer to provide block size ( block size ) available hosts in a subnet. The block size can generally be in increments of 4 , 8 , FQDN Fully Qualified Domain Name (fully qualified domain name) in the DNS for the domain structure due to Application layer : user interface DATA dial backup ( Dial Backup ) dial-up connection is typically used to provide redundancy backup frame relay connection. Backup chain The BPDU is exchanged between switches every two seconds. Periodic. Packet . Physical layer : rate , voltage , pin interface type Bit =========================================================== =============== baseline ( baseline ) baseline information, including historical data and information about the routine use of the network. This letter Configuring ACL allows london to telnet to Denver (2) outside interface address is unknown , how do PAT configuration commands Sended and is not reliable. Compare connection-oriented . See virtual circuit . Border peer ( boundary peer ) manages a peer group device that exists on the edge of a hierarchical design EIGRP external routing management distance : 170 EIGRP internal routing management distance : 90 show ip eigrp neighbors to view EIGRP neighbors Specify the idle IP of the address pool B(config)#inte s 1 De-encapsulation ( disassembly ) layered protocol technology, in which a layer of slave layer protocol data unit A random value selected by the BGP router when sending an OPEN message. Three forwarding modes of the switch : CO central office (central office) , all circuits in a certain area are connected here, is the subscriber line BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two Baud ( baud ) ----- bits per second (b / s) synonymous, if each cell represents one bit of the signal words. It is a unit of signaling speed equivalent to the number of individual signal units transmitted per second. The reservoir, which can be electrically erased and reprogrammed, is physically located on the EEPROM chip. Flash memory allows software images to be stored, booted, and rewritten as necessary. By default, Cisco routers and switches use flash to save IOS . See EPROM and EEPROM . =========================================================== =============== =========================================================== =============== =========================================================== =============== PPP: routing Classless ( stepless routing ) transmits routing update routing subnet mask. Stepless road Create a standard 5 sub-section ATM cells. The ATM layer receives 48- byte segments from the AAL and appends a 5- byte header to each segment . These cells are then sent to the physical layer for transmission over the physical medium. See AAL . B(config)#inte s 0 Interface fastethernet 0/1 enters Fast Ethernet 0/1 interface 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 1. Content of the announcement : Incremental update (OSPF lsa) 2. Announcement time : Trigger 3. Announced object : Router with neighbor relationship R14(config)#interface bri 0 R14(config-if)#encapsulation ppp Port 179 . Also known as "BGP peers " . =========================================================== =============== It consists of a router or access server or several routers or access servers, using inter-access tables and other methods to ensure the security of the private network. dixed configuration router ( fixed router ) can not be used to upgrade any new interfaces of the router. A corrective technique used to block the request. The path is restored to an intermediate node. Then use GCAC to try to find an alternate path to the final destination. 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 5.ExChange 6.Loading 7.Full coimnection ID ( connection ID) each into the router's Telnet identifying the session analysis. Show sessions The proposed circuit link. The full network type provides a large amount of redundancy, and because of its high cost, it is generally reserved as a network backbone. See CiscoView GUI management software for Cisco network devices that provides dynamic status, statistics, and full =========================================================== ============== Other routers maintain a record of existing available routes AEP AppleTalk Response Protocol (AppleTalk Echo The higher the RouteID, the easier it becomes to become a DR (Designated Router designated router ) The number of connections is reduced, thereby reducing the amount of plant routing traffic and the actual size of the database. The path is activated on an analog modem. Select the metric for the route : =========================================================== =============== The CLI command line interface allows users to configure Cisco routers and switches with maximum flexibility . CONSOLE PORT ( management console interface ): distance limit , exclusive way . BUS BUS ----- in LAN emulation, responsible for parsing the broadcasting and with all the unknown ( unregistered ) packet into the address of the ATM hardware or software required for point to point virtual circuit. See LANE , LEG , LEGS, and LES . BX.25 AT&T 's use of X.25 . See X.25 . Collision ( conflict ) Ethernet two nodes simultaneously transmit the result of the transmission. When they are on physical media Show ip route A bridge with low path overhead. 1900 only supports ISL trunk protocol 2950 only supports 802.1Q trunk protocol 3550 supports 802.1Q and =========================================================== =============== VLAN characteristics 1. in direction 2. out to party 4. Notification method : Broadcast (RIPv1, IGRP) rule mechanism : FRAD Frame Relay access device (Frame Relay access device) to provide LAN and Frame Relay WAN Ppp chap password cisco sends local password in CHAP mode 4. Ways of notification : Unicast & Multicast Spanning-tree vlan 1 priority ? Modify the priority of the switch to change the cost cost of the interface Any device connected between. See Cisco FRAD and FRAS . 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 Show ip route to view the current routing table to configure static routes : Data Link Control layer ( data link control layer ) the SNA first architecture model 2 layer, which is responsible for ATM ATM (Asynchronous Transfer Mode) by a fixed-length 53 -byte element identifier Exit returns to the upper mode Protocols : TCP 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 . =========================================================== =============== border gateway ( border gateway ) to facilitate a communication router routers in different autonomous systems with. The command gives the connection from the local router to the remote router. The snow users command displays the connection ID of the remote login to the local router user . CBR constant bit rate ----- ATM forum created for use in ATM networks B(config)#access-list 1 permit any Exit returns to the upper mode classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing AUX port ( auxiliary management interface ): can be connected to MODEM to achieve remote management , exclusive mode . Duplex Auto ( automatic duplex ) of a layer and 2 a device layer disposed on, it automatically switches provided BECN: Backward explicit congestion notification Encryption ( encryption ) converting the information into a form clutter to effectively disguise, so as to prevent an authorized end Target port : None R14(config-if)#dialer string 016300 Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , CHAP: Challenge three-way handshake , the password is transmitted by HASH algorithm , which is stronger than PAP. Cell ( Cell ) the ATM network, the basic unit of data switching and multiplexing. The cell has a 53 byte all-routes explorer packet ( full routing packet detection ) a can pass over the entire SRB sounding packet network, A technique for making more data. A bridge with low path overhead. CIP channel interface processor (Channel Interface Processor) ----- Cisco 7000 a channel series routers use additional interface, which is connected to a host computer a control device. This device eliminates the need for an FBP connection channel. Access-list 100 permit TCP host 10.3.3.1 host 172.16.3.1 eq 23 The default route ( default route ) is used to guide the static routing table entry of the frame, and its next hop is not in border router ( border router ) ----- generally Open Shortest Path First (OSPF) is defined as a region connected to the backbone routers region. But the border router can also be a router that connects a company to the Internet. See =========================================================== =============== Topology Bus ( bus topology ) a straight LAN off-line structure, wherein transmission from each station on the network Floating routes ( floating routers ) are used along with dynamic routing to provide backup routes to prevent failure. WAN : ANSI American National Standards Institute (American National Standards Institute) by the United States, government Protocols : TCP Passive-interface configures the corresponding interface to not send any notifications bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root data direct VCC ( data direct VCC) ATM two LEG to establish a two-way point between the Each network elects a root bridge BridgeID Lowest Devices that set frames can require higher priority protocols to take flow control if necessary. See BECN . Control distribute VCC ( Control Distribution VCC) Phase I LAN simulation defines three control connections Copy tftp: startup-config copy flash: tftp: 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. Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , Connectionless link. It is mainly used to send SMDS packets on the ATM network . See AAL ATM Forum (ATM Forum ) ----- by the Northern Telecom , Sprint , the Cisco Systems and Exit application and exit the database configuration mode of the VLAN 1. Neighbor table => all neighbors analog transmission ( analog transmission ) represented by different combinations of the information signal amplitude, frequency and phase reload reload Router ( restart ) 1. The content of the announcement : a copy of the routing table (copy) 2. The time of the announcement : periodicity 3. The object of the announcement : the directly connected neighbor router 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 . BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two =========================================================== =============== Crankback (in case of busy return ) In ATM , when a node cannot accept a connection somewhere on the selected path Hostname configures the host local ID 1.Down 2.Init 3.Two-Way 4.ExStart Ppp chap password cisco sends local password in CHAP mode frame identification (frame tagging) ( frame identifier, frame flag ) the VLAN can span multiple connections B(config)#access-list 1 permit any The address is all ones . For hardware addressing, the hardware address will be all 1s in hexadecimal ( ie all F) . Duplex Auto ( automatic duplex ) of a layer and 2 a device layer disposed on, it automatically switches provided Copy tftp: flash: Configuring VTP Frequent burst data from fast devices to compensate for differences in processing speed. The information entered before the data to be sent is received is stored. Also known as " information buffer " . Classical IP over ATM ( classical IP over ATM) is defined in RFC 1577 to make ATM features 1.Down 2.Init 3.Two-Way 4.ExStart bidirectional shared tree ( bidirectional shared tree ) A method for forwarding multicast tree sharing. This method allows 1. Standard Access Control List 1-99, 1300-1999 2. Extended Access Control List 100-199, 2000-2699 First, a one-way virtual control connection (VCC) established by a LES to an LEC in the ATM . Usually, the VCC lOBaseT is ten times faster, while retaining properties like MAC mechanism, MTU and frame format. These similarities enable existing lOBaseT applications and management tools to be used in Fast Ethernet networks. Fast Ethernet is an extension (IEEE 802.3U) based on the IEEE802.3 specification . Compare Ethemnet . See lOOBaseT , IOOBaseTX, and IEEE . Interface fastethernet 0/1 enters Fast Ethernet 0/1 interface EEPROM electrically erasable programmable read-only memory is programmed after shipment. These non-volatile memory chips can be used when needed. A connectionless protocol responsible for sending datagrams over an internetwork. Command Global ( global command ) is used to define the command Cisco terminology, which are used to change the entire router that configuration. In contrast, interface commands only affect that interface. Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best The area of ​​the possibility of being discarded. Cells with CLP=0 are considered to be guaranteed traffic and cannot be discarded. A cell with CLP = 1 is considered to be an effortful traffic, which can be discarded when congested, submitting more resources to handle the guaranteed traffic. =========================================================== ============== 1. Define the maximum number 2. Horizontal separation 3. Route poisoning , toxicity reversal 4. Silence timer 5. Trigger update administrative distance ( management distance ) from 0 to 255 a number between, which represents one routing information EPROM erasable programmable read-only memory----- DVMRP distance between the amount of multicast routing protocol (Distance Vector Multicast Routing Protocol) is mainly based on Routing Information Protocol (the RTP) , the Internet gateway protocol a common, strong IBM agency link. See FRAD . Layer Access ( Access Stratum ) ----- the Cisco three-layer hierarchical model. The access layer allows users to access the Internet. EIGRP see Enhanced IGRP . Kind of protocol to communicate. The bridging function is at the data link layer, layer 2 of the OSI reference model . The purpose of the bridge is to filter, send or spread any incoming frames based on the MAC address of the particular frame. The requested VCC determines the likelihood of a path containing the appropriate bandwidth. B(config)#ip nat pool abc 1.1.1.1 1.1.1.1 prefix-length 8 translate list 1 host IP to pool abc free IP B(config)#ip nat inside source list 1 pool abc overload 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability The protocol field, even the direct font size in the transport layer header, filters the IPX address table of the network . There is traffic successfully reaching the destination. Usually in a router with poor productivity or insufficient caching ability and poor packet loss ATM Forum (ATM Forum ) ----- by the Northern Telecom , Sprint , the Cisco Systems and =========================================================== =============== Modem and terminal. 5.ExChange 6.Loading 7.Full =========================================================== =============== Set a user password or authentication protocol The IGMP member report was initiated. AIP ATM Interface Processor (ATM Interface Processor) ----- supports AAL3 / 4 and AAL5. Cisco VTP is the use multicasting to advertise, VTP will intervals . 5 minutes announcement once , even if there is no change .VTP switch synchronized the last configuration . The client's local broadcast request is changed by unicasting the service to the server.administrative distance ( management distance ) from 0 to 255 a number between, which represents one routing information frame tagging ( frame flag ) see Frame Identification . UTR Data Terminal Ready (Data Terminal Ready) ----- an activated with DCE communication Anycast----- An ATM address that can be shared by multiple end systems, allowing requests to be sent to a node that provides special services. =========================================================== =============== No * do the reverse operation of the configuration Show ip route to view the current routing table to configure static routes : Is a point-to-multipoint connection. See control directVCC . =========================================================== ================ PAT configuration bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually, it involves one Line : PPP, HDLC, SLIP Asynchronous transmission ( digital transmission ) does not have a precisely timed digital signal, usually 1. Add this interface to the rip process. 2. Advertise the network of this interface to other routers. access method ( access method ) network devices gain network access Wan style. 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 . Password cisco login Description description interface comment Ip address 10.1.1.1 255.255.255.0 =========================================================== =============== Fast switching ( fast switching ) that utilizes a route cache to speed up packet switching through a router 100BaseTX is based on the IEEE 802.3U standard, 100BaseTX is wired using two pairs of UTP or STP broadcast storm ( broadcasting storm ) on the network an unwelcome event, it turned on by any number of broadcast At least two non-adjacent AppleTalk network through an external network ( such as TCP / IP) is a connection establishment AppleTalk the WAN . This connection is called an AURP tunnel. By exchanging routing information between external routers, AURP maintains a routing table for the full AppleTalk WAN . See AURP tunneL . The over rate is the maximum rate minus the insurance rate. Depending on the availability of network resources, excess traffic can be dropped during congestion. Contrast maximumraten Mesh Full ( full mesh ) network topology, wherein each node to other network nodes or virtual physical Crossover : switches and switches , switches and HUB connections =========================================================== =============== Routing on ISDN or telephone lines. Duplex Half ( half duplex ) can only capability between the side transmitting data between a transmitting and receiving stations. See fullduplex . The minimum information transmission rate agreed by the Frame Relay network, measured in b/s . access rate ( access speed ) ----- bandwidth rate defined circuit. For example, the access rate of the T-1 circuit is 1. Define the maximum number 2. Horizontal separation 3. Route poisoning , toxicity reversal 4. Silence timer 5. Trigger update When they meet, the frames of each node collide and are damaged. See collision domain . This routing algorithm group repeats the number of hops in a given route, requiring each router to send its complete updated routing table, but only to its neighbors. This routing algorithm has a tendency to generate loops, but is simpler than the link state algorithm. See link-state routing al-gorithm and SPF . ARA AppleTalk Remote Access (AppleTalk Remote Access) is built for Macintosh users At least two non-adjacent AppleTalk network through an external network ( such as TCP / IP) is a connection establishment AppleTalk the WAN . This connection is called an AURP tunnel. By exchanging routing information between external routers, AURP maintains a routing table for the full AppleTalk WAN . See AURP tunneL . WAN : 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 Dynamic VLAN ( Dynamic DLAN) A manager that creates entries in a special server. 1. Add this interface to the rip process. 2. Advertise the network of this interface to other routers. Interface s 1 no ip add 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 . Packet . congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into BGP H channel (H channel ) high-speed channel (high-speed channel): a full-duplex, the 384Kb / s work on rate ISDN primary rate channel. See B channe , D channel , and E channel . Enable HDLC on the interface : interface serial 0 encapsulation HDLC OSPF hierarchy advantages : =========================================================== =============== clear ip route * clear route table A digital device of the loop. Often referred to as a CSU/DSU along with a data service unit . See DSU . Please refer to the third part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection =========================================================== ================ Password cisco sets a password to "cisco" Flow control ( flow control ) is a technique used to ensure that the receiving unit is not overwhelmed by the data of the sending device. Enable HDLC on the interface : interface serial 0 encapsulation HDLC Abandonment or ABR congestion feedback mechanisms are combined in the composition of the network. Interface serial 0 Ripv2 is a multicast method to advertise the network , multicast address : 224.0.0.9 router rip collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict End exit the interface Topology Bus ( bus topology ) a straight LAN off-line structure, wherein transmission from each station on the network Banner motd [char c] also ends with [char c] another line Data rate between 622Mb/s and higher. See BRI , ISDN, and PRI . Node group. A direct broadcast is indicated by its broadcast address, which is a destination subnet address where all bits are one . A system developed to provide network security. See the authentication . Authorization and accounting LMI: Local Management Interface . collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict =========================================================== =============== Programs ( such as email or file transfers ) to provide services. This layer selects and determines the validity of the communication object and the resources needed to establish the connection, coordinates the cooperating application, and forms a consistent process in controlling data integrity and error recovery.