ccie security lab builder

ccie security lab builder

FDDI Fiber Distributed Data Interface (Fiber Distributed Data Interface) ANSIX3T9.5 defined Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection B(config)#inte s 0 FECN: Forward Explicit Congestion Notice control direct VCC ( control direct VCC) ----- Phase I LAN one of three emulation control connection defined in the ATM by \ a LEG to a LES established bi-directional virtual control connection (the VCC) . See control distribute VCC . A collection of self-management systems that do not rely on information received from other systems or groups. There are two types of ACLs : dynamic entries ( dynamic entries ) for the first 2 layer and 3 to create a hardware device address dynamically layer Show ip ospf neighbor to view neighbors (NeighborID is RouterID) For broadcast frames and multicast data frames , the switch forwards flooding by default. There is a command line interface function. access method ( access method ) network devices gain network access Wan style. Autonomous switching (autonomous switching Cisco routers use ciscoBus to independently exchange system processing 10OMb/S baseband Fast Ethernet specification. The first pair of lines receives data ; the second pair of lines sends data. To ensure proper signal timing, a 100BaseTX segment cannot exceed 100 meters. RIP supplement : Debug ip igrp transactions debug igrp event content Boot ROM ( Boot ROM) for the router in order to release the boot mode router. Then guide =========================================================== =============== FECN forward explicit explicit notification (Forward Explicit Congestion Notification) by Frame Relay Network Ethernet link overhead: 1.544Mb/s . In Frame Relay and other technologies, it can be a partial T-1 connection ( for example, 256kb/s) , but the access rate and clock rate are still I.544Mb/S. 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 " . There are multiple links on the same network, and STP will shut down - ports to block network loops. =========================================================== ================== Frame-relay map ip 10.1.1.2 110 broadcast for manual static mapping The line is damaged , the interface does not have any connection cable. Serial1 is up, line protocol is down The other party is not configured with the same Layer 2 protocol serial interface default encapsulation: HDLC RouterID generated ? Bandwith on demand (BoD , bandwidth on demand ) This feature allows an additional B channel to be used for Password cisco login login set login password when compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant Packet exchange. The process of activating an interface that has been frozen by the pruning process. It is initiated by an IGMP member report sent to the router . =========================================================== =============== =========================================================== =============== Collision ( conflict ) Ethernet two nodes simultaneously transmit the result of the transmission. When they are on physical media dynamic entries ( dynamic entries ) for the first 2 layer and 3 to create a hardware device address dynamically layer 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 . 4. Notification method : Broadcast (RIPv1, IGRP) rule mechanism : Bit ( bit, bit ) A number ; a 1 or a 0 . 8 bits make up one byte. Show cdp neighbors detail View CDP neighbors ( including Layer 3 IP addresses ) show cdp entry * View CDP neighbors ( including Layer 3 IP addresses ) Session layer : Differentiate data from different applications . The operating system works on this layer of DATA 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 . Enterprise network (a corporate network ) that connects a major location in a large company or organization The power is erased and reprogrammed. Play EPROM and PROM . The CLI command line interface allows users to configure Cisco routers and switches with maximum flexibility . Used to determine the duplex mode and speed that can be used. A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. ARA AppleTalk Remote Access (AppleTalk Remote Access) is built for Macintosh users The cable is disconnected. The beacon frame carries the downstream station address. See failure domain . 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 . Apply application related configuration call establishment ( call setup ) to refer to a work when the call ISDN call setup scheme. ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than Modulation method. See modulation . byte-oriented protocol ( byte oriented protocol ) to mark the frame boundaries, the use of a user character binary ( binary ) by 1 and 0 two methods of counting characters. Binary count is made for all information DSR modem is ready (Data Set Ready) ----- When the DCE energized and ready to run, this Configuration register starts the configuration key , and modifying it will affect the startup sequence of the Router . 1. in direction 2. out to party B (config-if) #ip nat inside configured S0 interface inside the network Frame-relay route 110 interface Serial1 120 Serial1 is down, Line protocol is down classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing UTR Data Terminal Ready (Data Terminal Ready) ----- an activated with DCE communication excess burstsize ( over burst size ) users may exceed the number of committed traffic burst size. DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR Cell ( Cell ) the ATM network, the basic unit of data switching and multiplexing. The cell has a 53 byte Crankback (in case of busy return ) In ATM , when a node cannot accept a connection somewhere on the selected path The technology of connecting bandwidth on a line to allocate bandwidth. See TDM , ATDM, and statistical multiplexing . between. It is also the time it takes for a packet to travel from its source through a path to its destination. See latency . Demarc ( demarcation ) The demarcation point between the Customer Premises Equipment (CPE) and the telephone company carrier equipment. Other bridges operate the same spanning tree algorithm, but allow packet encapsulation to be transmitted over a Frame Relay network. Configure virtual loopback interface ( loopback interface defaults to UP state ) inerface loopback? Create a loopback interface Flow control ( flow control ) is a technique used to ensure that the receiving unit is not overwhelmed by the data of the sending device. 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 . Copy running-config startup-config saves the current configuration concept : EIGRP uses a wildcard mask configuration example : The router of the DCE needs to configure the clock frequency. Application layer : user interface DATA Configuration register starts the configuration key , and modifying it will affect the startup sequence of the Router . NextHopIP: Next hop IP It is one of the four link metrics exchanged by PTSP to test the reliability of ATM network resources. FRAME-RELAY address mapping (reverse ARP) In ABR service allows a congestion feedback mode. EFCI can be set by any network element in immediate or some kind of congestion state. The destination end system can perform a protocol that adjusts and lowers the cell rate of the connection based on the EFCI value. See ABBR . Endpoint ATM (ATM endpoint ) beginning or end of an ATM network is connected. ATM endpoints include all-routes explorer packet ( full routing packet detection ) a can pass over the entire SRB sounding packet network, 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. R14(config-if)#ppp chap password 16300 R14(config-if)#ppp chap hostname 16300 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. Flexibility : VLANs can span multiple switches Physical layer : ACL for packet processing : This interface of the 7000 Series router minimizes the performance bottleneck of the UNI . Participate in AAL3/4 private AAL5 . Source : 10.3.3.1 Surgery. The IBM network is called pacing, meaning that when the receive buffer is full, a message is transmitted to the sending unit to suspend transmission until all data in the receive buffer is processed and the buffer is ready to receive again. Listen for digital signals on the cable before. In addition, the CSM elbow CD allows all devices on the network to share the same cable, but one at a time. If both devices are sending at the same time. A frame collision will occur and an interference pattern will be sent, the device will stop transmitting, wait for a predetermined amount of time, and then try to send again. UTR Data Terminal Ready (Data Terminal Ready) ----- an activated with DCE communication AM amplitude modulation (Amplitude modulation) is a kind of information represented by the amplitude change of the carrier signal. Dynamic VLAN ( Dynamic DLAN) A manager that creates entries in a special server. Exchange routing information. A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. 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. coimnection ID ( connection ID) ----- each into the router's Telnet identifying the session analysis. Show Configuring ACL allows london to telnet to Denver (2) 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 Target : 172.16.3.1 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 . bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root Provide timing. Select the metric for the route : Setup Call ( call setup ) how to define the source and destination devices transmit data to each other handshaking scheme. COmposite metric ( complex metrics ) with IGRP and EIGRP use with such routing protocol, 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,ccie security lab builder, to view the configuration of the interface's acl . Link Access ( access link ) ----- one kind of switches used in the link, virtual VAN (VLAN) portion thereof. The trunk link transfers information from multiple VLANs . The sessions 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 . When to disconnect Provide timing. VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN RIPv1, RIPv2, IGRP, EIGRP, OSPF, ISIS Encapsulate the packet and prepare the data for transmission on the network medium. bridge priority ( bridge priority ) disposed bridge STP priority. By default all bridges take precedence Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . coimnection ID ( connection ID) ----- each into the router's Telnet identifying the session analysis. Show Endpoint ATM (ATM endpoint ) beginning or end of an ATM network is connected. ATM endpoints include A recognized serial interface processor that provides four or eight high-speed serial interfaces. The signal has been established. mask address ( address mask ) a bit pattern descriptor, which identifies which portion of a network address of the representative Encapsulation ( encapsulation ) layered association, the technology used, one layer to the upper layer protocol data unit Frame-relay lmi-type cisco frame-relay intf-type dce Serial1 is administratively down, Line protocol is down Dynamic VLAN ( Dynamic DLAN) A manager that creates entries in a special server. Action : Permit =========================================================== ================ distance-vector routing algorithm ( Distance Vector Routing Algorithm ) In order to find the shortest path, AS AS (autonomous system) a group of networks under the management of another, they share the same A(config)#key chain A configuration key chain A The path is activated on an analog modem. An example. Also known as " narrowband " . For broadband . 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 . The twisted pair transmission distance is 100 meters . Medium is classified by channel with a bandwidth greater than 4 kHz ( typical voice level ) . It uses simulation in LAN technology De discard Eligibility is used in the Frame Relay network to tell the switch if the switch is too Used to determine the duplex mode and speed that can be used. Network or subnet, which part represents the host. Sometimes referred to as a mask. Playing subnet mask coimnection ID ( connection ID) each into the router's Telnet identifying the session analysis. Show sessions Directed broadcast (a direct broadcast ) a data frame or packet is transmitted to a remote network segment specific Corelayer The top layer of the Cisco three-tier hierarchical model that helps design, build, and maintain a classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing Endpoints ( endpoint ) see BGP neighbors . Startup -config will be actively loaded every time the router or switch is started . An example. Also known as " narrowband " . For broadband . BISDN broadband TSDN (Broadband ISDN) ----- to manage high-bandwidth technologies ( such as video ) created Specify the idle IP of the address pool Each network segment elects a designated port BridgeID Lowest Interface s 1 encapsulation frame-relay bridge. The bridge ID is a combination of bridge priority and base MAC address. Copy running-config startup-config saves the current configuration concept : frame types ( frame type ) the LAN in a frame is used to determine how to put on the local network. Ethernet LocalInterface: local interface ------------------------------------------------- Address learning, forwarding filtering, etc. of the switch : Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . Address mapping ( address mapping ) by converting a network address from one format to another, this Config-register 0x2142 modify the startup configuration key 1OOBaseT is based on the IEEE 802.3U standard, 1OOBaseT is a baseband fast Ethernet using UTP wiring collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict ! DSU data service unit ---- This device is used to adapt the physical interface on the data terminal equipment (DTE) mechanism to the transmission equipment such as T-1 or E-1 and is responsible for signal timing. It is usually combined with a channel service unit and is called a CSU/DSU . See CSU . In ABR service allows a congestion feedback mode. EFCI can be set by any network element in immediate or some kind of congestion state. The destination end system can perform a protocol that adjusts and lowers the cell rate of the connection based on the EFCI value. See ABBR . Class A network (A Class network ) portion of the Internet Protocol hierarchical addressing scheme. Class A network only Interface Serial1 no ip address Access-list 100 permit TCP host 10.3.3.1 host 172.16.3.1 eq 23 Each network elects a root bridge BridgeID Lowest broadcast storm ( broadcasting storm ) on the network an unwelcome event, it turned on by any number of broadcast =========================================================== ================ CTD Cell Transfer Delay (Cell Transfer Delay) for ATM a given connection is used in the source CHAP Q & A Handshake Authentication Protocol (Challenge Handshake Authentication Protocol) ----- authentication ( authentication ) AAA first component model. Users generally pass the username and port 1. Control network traffic 2. Implement packet filtering The station's HDLC communication mode, where the transmission can start from the primary station or a secondary station. B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT Basic Management Setup ( basic management established ) Cisco routers to establish mode. only ASN.1 Abstract Syntax Notation 1 (Abstract Syntax Notation One) used to describe a structure without a computer =========================================================== ================ Crossover : switches and switches , switches and HUB connections A working node gets information about the attached network. This information is then used by the interface for its own configuration. Configure ACL to reject london to ping through Denver (1) Cisco layered network. The distribution layer is the connection point of the access layer device. Routing is done at this level. bridge priority ( bridge priority ) disposed bridge STP priority. By default all bridges take precedence Select the metric for the route : AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection Code IP over ATN equipment. cell payload scrambling ( cell payload scrambling ) the ATM switches and certain of the edges speed relay A system developed to provide network security. See the authentication . Authorization and accounting Access control list (ACL) Designated bridge (the designated bridge ) has the most in the process of forwarding frames from a network segment to a routing bridge. E.164 1) evolved from the standard telephone numbering system, which is numbered by ITU-T , especially at Configuring ACL allows london to telnet to Denver (2) =========================================================== ================ 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 process of segmenting a packet into small pieces. ------------------------------------------------ Password cisco sets a password to "cisco" CER cell error ratio (cell error ratio) ATM cell, a transmission error within a certain time and 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. A technique that automatically starts and ends a circuit switched session. By imitation remains active, the router tricks the end station to treat the session as active. DDR is allowed through a modem or an external ISDN terminal adapter The minimum information transmission rate agreed by the Frame Relay network, measured in b/s . The higher the RouteID, the easier it becomes to become a DR (Designated Router designated router ) 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 The switch will first cache the frame source address. An incident has occurred. Can be abbreviated as ACK . Control NAK . Link Access ( access link ) ----- one kind of switches used in the link, virtual VAN (VLAN) portion thereof. The trunk link transfers information from multiple VLANs . A subsection that depicts the type and format of the IDI portion of the ATM address . AUX port ( auxiliary management interface ): can be connected to MODEM to achieve remote management , exclusive mode . Hostname configures the host local ID VLAN characteristics Routers in the same autonomous system are able to learn to advertise related routes to each other . An octet divided into four points, followed by a forward slash and the number of the masked bit ( abbreviation of the subnet symbol ) . See access rate ( access speed ) ----- bandwidth rate defined circuit. For example, the access rate of the T-1 circuit is CHAP: Challenge three-way handshake , the password is transmitted by HASH algorithm , which is stronger than PAP. 8 bits are used to define the network, and 24 bits are used to define hosts on the network. Source port : None 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 . =========================================================== ================ Show ip route access method ( access method ) network devices gain network access Wan style. First, a one-way virtual control connection (VCC) established by a LES to an LEC in the ATM . Usually, the VCC There is traffic successfully reaching the destination. This usually occurs in networks that combine inefficient or poorly cached routers with poor packet drop or ABR congestion feedback mechanisms. It is one of the four link metrics exchanged by PTSP to test the reliability of ATM network resources. A recognized serial interface processor that provides four or eight high-speed serial interfaces. 1.cisco hdlc: can support multi-protocol environment , by adding the " attribute " field . 2.standard hdlc: only support single-protocol environment Network or subnet, which part represents the host. Sometimes referred to as a mask. Playing subnet mask B8ZS binary 8 replacement - a line coding, explained at the far end of the connection, when transmitting eight zeros continuously on the link of the T-1 and E-1 circuits, it uses a special Code replacement. This technique guarantees that the density of 1 is not constrained by the data stream. Also known as bipolar 8 zero replacement. Compare AMI . See ones density . The three-tier architecture of the network : 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. show vtp status view VTP status Show spanning-tree interface fastEthernet 0/23 View the status of the interface in the spanning tree Interface serial 0 bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually, it involves one OSPF hierarchy advantages : PAP: Two handshakes , the password is transmitted in clear text. Spanning-tree vlan 1 cost ?? =========================================================== =============== 10.1.1.0/0.0.0.255 The reduced mode IP multicast scheme uses TGMP to transport routing datagrams between its neighbors. See IGMP . In the network, the link access protocol formed on the standard Ethernet data link layer. ARM asynchronous response mode (Asynchronous Response Mode) uses a master station and at least one auxiliary The clock frequency Serial1 is up, the line protocol is up interface is working properly. B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT 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. Used to " fused " the capabilities of various routers and switch sets . PAP: Two handshakes , the password is transmitted in clear text. =========================================================== =============== A device that acts as a destination, source, or both. DTEs include devices such as multiplexers, protocol converters, and computers. A connection to a data network is a data communication device that uses a clock signal generated by the device ATMlayer A sublayer of the data link layer in an ATM network that is service independent. for ASICs for integrated circuit applications ----- used for the first 2 layer switches filtering decision. ASIC view analog transmission ( analog transmission ) represented by different combinations of the information signal amplitude, frequency and phase Config-register 0x2142 modify the startup configuration key 1OOBaseT is based on the IEEE 802.3U standard, 1OOBaseT is a baseband fast Ethernet using UTP wiring Show spanning-tree interface fastEthernet 0/23 View the status of the interface in the spanning tree Available in four different frame types. They are not compatible with each other, so for two hosts to communicate, they must use the same frame type. Set of special character data link communication protocols. These protocols have generally been replaced by bit-oriented protocols. Compare the bit-oriented protocol . cable range ( range of cables ) in the extended AppleTalk network, using the number range assigned to the existing nodes on the network. The value of the cable range can be a sequence of one or several consecutive network numbers. Node addresses are determined by their cable range values.