ine ccie security v5 download

ine ccie security v5 download

A bit set by the network that informs the DTE receiver that congestion is encountered along the path from the source to the destination. Received FECN bit R14(config-if)#dialer string 016300 E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . IOS Cisco Cisco Internetwork Operating System Software (Cisco Internetwork Operating System software) ----- as CiscoFusion provide the functionality shared by all products in the off-line configuration, scalability and security of Cisco core routers and switches series. See CiscoFusion . Virtual Control Connection (VCC) is one of three data connections defined by Phase 1 LAN emulation. Because the data is direct Change information, a spanning tree protocol that sends initialization packets at definable intervals. ------------------------------------------------- Packet Exchange : X.25, Frame-Relay, ATM AURP AppleTalk is based on the AppleTalk Update-based Routing Protocol, a technology for encapsulating AppleTalk traffic in the header of an external protocol. Fast Ethernet ( Fast Ethernet ) ---- speed lOOMb / s Ethernet specification. Fast Ethernet ratio A(config-if)#ip rip authentication mode md5 ciphertext authentication Communication between two ATM service users ( such as ATMM processes ) . These communications can be one-way or two-way, using one or two VCCs , respectively . See ATM layer and ATMM . B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT B#show ip nat translations view translation relationship table 1. Standard Access Control List 1-99, 1300-1999 2. Extended Access Control List 100-199, 2000-2699 Configure a static default route to indicate which interface to send to the unknown network , which interface to send the packet R14 (config) #ip route 0.0.0.0 0.0.0.0 bri 0 show flash: view flash in the IOS file Border peer ( boundary peer ) manages a peer group device that exists on the edge of a hierarchical design B(config)#inte s 1 1 1 2 1 2 1 Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection Flexibility : VLANs can span multiple switches Management distance: Determine which routing protocol generates routes will be adopted by the router. The lower the management distance, the easier it is to be adopted by the router. =========================================================== =============== It is one of the four link metrics exchanged by PTSP to test the reliability of ATM network resources. 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 . ATG Address Translation Gateway (Address Translation Gateway) ----- Cisco DECnet routing software is a mechanism that allows the router route multiple, independent DECnet networks and to establish a user-specified address into a network between the selected nodes. 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. R6(config-if)#ip address 1.1.1.1 255.255.255.0 NetMask: target network subnet mask ! Address learning, forwarding filtering, etc. of the switch : And track . 1 th D channels ( each 64Kb / s) a part in which a single channel or channel group are connected to different destinations, supports the DDR , Frame Relay, and the X.25 . Compare channelized E-1 . B(config)#inte s 1 VTP message announcement , only possible TRUNK transmission on . The other party does not have no shutdown to activate the port. The device has the hardware address of all devices on the internetwork. The server will then dynamically allocate the used VLANs . Layer file application ( application layer ) OSI seventh layer network reference model, the OSI applications outside Model autonomous confederation ( Autonomous Federation ) rely mainly on their own network reachability and routing information The protocol field, even the direct font size in the transport layer header, filters the IPX address table of the network . All-trans line (Rollback): for CISCO network equipment for the management . Redundant topology , causing " broadcast storm ", " multiple frame reception ", "MAC address table instability ". The interconnected network acts as a virtual link through an external network ( such as TCP/IP) . See AURP . Fast Ethernet ( Fast Ethernet ) ---- speed lOOMb / s Ethernet specification. Fast Ethernet ratio Configure a static default route to indicate which interface to send to the unknown network , which interface to send the packet R14 (config) #ip route 0.0.0.0 0.0.0.0 bri 0 Frame Relay ( FR ) ----- the X.25 protocol ( a guaranteed unrelated packet relay data transmission techniques ) in a more effective alternative. Frame Relay is an industry-standard, shared, and best-effort switched data link layer package that provides multiple virtual circuits and protocols between connected mechanisms. Interface fa0/24 The interconnected network acts as a virtual link through an external network ( such as TCP/IP) . See AURP . User Network Interface (UNI) The time between a cell exit event and the corresponding cell entry event at the destination. Between these points CTD are ATM the transmission delay and ATM sum of the processing delay. A system developed to provide network security. See the authentication . Authorization and accounting Each non-root bridge elects a root port 1) Bandwidth Cost Lowest 2) Recevied BridgeID Lowest CDP Cisco Discovery Protocol (Cisco Discovery Protocol) Cisco proprietary protocol, used to tell the neighbor =========================================================== =============== A remote AppleTalk location access protocol for resources and data. Target port : None 1. Transmission area ( backbone area ) 2. Common area ( non-backbone area ) 2. Topology Table => Network Map Ethernet ( Ethernet ) A baseband LAN specification created by Xerox , then via Xerox , Digital Telnet *.*.*.* is a telnet device . You need to set the password for line vty . If you need to enter privileged mode, you need to configure it. The loop that occurs when the end of the protocol opens. A service-related sublayer of the AAL ATM adaptation layer data link layer, data link layer from other applications Congestion ( congestion ) exceeds the amount of network traffic handling capacity. Access-list 100 deny ICMP host 10.3.3.1 host 172.16.3.1 =========================================================== ================ Exchange routing information between systems. Source port : None A technique for making more data. A & B bit signaling (A and B signaling bits ) for T-1 transmission device, sometimes referred to as " the first 24 channel signals Immediate execution , immediate effect The IGMP member report was initiated. ! The switch will first cache the frame source address. IBM agency link. See FRAD . Hostname configures the host local ID ETP Ethernet Interface Processor, a Cisco 7000 Series Router 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 =========================================================== =============== 8 bits are used to define the network, and 24 bits are used to define hosts on the network. 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, 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 . 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. 1 1 2 1 2 1 CDP timer (CDP timer ) By default, Cisco Discovery Protocol is transmitted to all router interfaces. Show spanning-tree interface fastEthernet 0/23 View the status of the interface in the spanning tree boot sequence ( leader sequence ) define how routers boot. The configuration register tells the router where to go from The description in the dynamic routing table is clear. Fallback (in the fall ) ATM network, this mechanism is used to get a path, if it can not use the regular side 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. 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 . Banner motd [char c] also ends with [char c] another line border gateway ( border gateway ) to facilitate a communication router routers in different autonomous systems with. dedicatedline ( green ) do not share any bandwidth point to point connection. 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. DCE/DTE only exists in the WAN Signal transmission. 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 . Line : PPP, HDLC, SLIP Show ip ospf interface serial 1 View the process ID of RouterID and OSPF and the associated network type . show ip protocols HUB Hub : A broadcast domain, a collision domain. Flooding forwarding . Shared bandwidth . Straight line : the host and switch or HUB connected UTR Data Terminal Ready (Data Terminal Ready) ----- an activated with DCE communication =========================================================== =============== To understanding call priority ( call priority ) circuit switched system, the originating port to the priority of each definition, it 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 . ITU-T standard. Currently BISDN uses ATM technology and SONET- based transmission circuits to provide 155Mb/s and Ciscoa.njut.edu.cn The address is all ones . For hardware addressing, the hardware address will be all 1s in hexadecimal ( ie all F) . Sended and is not reliable. Compare connection-oriented . See virtual circuit . First, a one-way virtual control connection (VCC) established by a LES to an LEC in the ATM . Usually, the VCC border gateway ( border gateway ) to facilitate a communication router routers in different autonomous systems with. Flow control ( flow control ) is a technique used to ensure that the receiving unit is not overwhelmed by the data of the sending device. 1.0.0.0 2.0.0.0 3.0.0.0 4.0.0.0 Caused by simultaneous transmission of the network segment. Its appearance may exhaust the network bandwidth and cause a timeout. 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 . Frame Relay bridging ( FR bridge ) in 1490 RFC definition, uses this bridging method =========================================================== =============== AS path prepending (AS path pre-planned ) use route maps by adding fake ASN extended from Application layer : user interface DATA Fast Ethernet ( Fast Ethernet ) ---- speed lOOMb / s Ethernet specification. Fast Ethernet ratio ANSI is a member of the IEC and ISO . Create a VLAN DHCP Dynamic Host Configuration Protocol (Dynamic Host Configuration Protocol) ----- DHCP is Action : Permit Rip management distance : 120 Source port : None 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. Holdtime CDP (CDP hold time ) routers to keep from neighboring routers received Cisco Discovery Protocol Configuration with multipoint subinterface A bridge with low path overhead. compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant =========================================================== =============== DNS Domain Name System (Domain Name System) is used to resolve host names to IP addresses. The line is damaged , the interface does not have any connection cable. Serial1 is up, line protocol is down ELAN emulation LAN (emulated LAN) emulates Ethernet or commands using a client / server model 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 A & B bit signaling (A and B signaling bits ) for T-1 transmission device, sometimes referred to as " the first 24 channel signals Telnet *.*.*.* is a telnet device . You need to set the password for line vty . If you need to enter privileged mode, you need to configure it. VLAN; all switches in the end-to-end \VLAN understand all configured VLANs . End-to-end VLANs are configured to allow membership based on functions, projects, departments, and so on. The process of segmenting a packet into small pieces. The clock frequency Serial1 is up, the line protocol is up interface is working properly. The other party is not configured with the same Layer 2 protocol serial interface default encapsulation: HDLC Network connection. B(config)#inte s 1 Interface Serial1 no ip address The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. Configure terminal enters global configuration mode VCC does not guarantee QoS, they are usually reserved for UBR and ABR connections. Compare control distribute VCC and Debug ip eigrp neighbor debug neighbor creation process 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 . In user mode and privileged mode. The mode boots the device with an operating system. The ROM can also hold a small Cisco IOS . 1. in direction 2. out to party 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 . An ATM network configured with a ring of LAN . Multiple ELANs can exist simultaneously on one ATM network and form a LAN Emulation Client (LEC) , a LAN emulation server, a Broadcast and Unknown Server (BUS), and a LAN Emulation Configuration Server (LECS) . ELAN is defined by the LANE specification. See LANE , LEG , LEGS, and LES . AFP AppleTalk Filing Protocol (AppleTalk Filing Protocol) a presentation layer protocol support Ppp chap password cisco sends local password in CHAP mode 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 . Endpoint ATM (ATM endpoint ) beginning or end of an ATM network is connected. ATM endpoints include 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability 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. Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization COmposite metric ( complex metrics ) with IGRP and EIGRP use with such routing protocol, 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 . BECN between the Explicit Congestion through-pipe (Backward Explicit Congestion Notification) BECN is =========================================================== ================ Duplex Half ( half duplex ) can only capability between the side transmitting data between a transmitting and receiving stations. See fullduplex . Target : 172.16.3.1 An example. Also known as " narrowband " . For broadband . Frame-relay map ip 10.1.1.2 110 broadcast for manual static mapping Partial mesh 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. (PDU) Add header information. For example, in Internet terminology. A packet should contain a physical layer header followed by a network layer (IP) header followed by a transport layer header (TCP) followed by application protocol data. CIR committed information rate (cormmitted imformation rate) is averaged over a minimum time range, Bits are used to define the network. Only 8 bits are used to define hosts on the network. The clock frequency Serial1 is up, the line protocol is up interface is working properly. Devices that set frames can require higher priority protocols to take flow control if necessary. See BECN . Switch function: A (config) #inte s 1 enters s 1 interface Autonomous switching (autonomous switching Cisco routers use ciscoBus to independently exchange system processing connection-oriented ( connection-oriented ) to establish a virtual circuit data before any data transmission Dynamic NAT configuration Exit connection-oriented ( connection-oriented ) to establish a virtual circuit data before any data transmission 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability The fixed length enables cells to be processed and exchanged in hardware at high rates, making this technology the basis for ATM and other high-speed network protocols. See cell . Ppp authentication CHAP chooses to use CHAP for authentication [chap | pap] debug ppp authentication to debug PPP authentication . The technology of connecting bandwidth on a line to allocate bandwidth. See TDM , ATDM, and statistical multiplexing . LMI: Local Management Interface . distance-vector routing algorithm ( Distance Vector Routing Algorithm ) In order to find the shortest path, Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, The number of connections is reduced, thereby reducing the amount of plant routing traffic and the actual size of the database. Endpoints ( endpoint ) see BGP neighbors . 1. Router 2. Routing implementation path selection ( routing decision ). Routing Table 3. WAN access . 4. Router broadcast domain division ( interruption ). Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection Bridge ( bridge ) two devices connected to the network and transmit data packets therebetween. Both paragraphs must use the same " The main explanation is F , G , H vocabulary beginning. Segmentation : Broadcast domain division Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . block size ( block size ) available hosts in a subnet. The block size can generally be in increments of 4 , 8 , CER cell error ratio (cell error ratio) ATM cell, a transmission error within a certain time and The quantity manages a QoS parameter specified when the connection is established . In CBR transmission, the degree of allowable fluctuation of data sampling by PCR is determined by the CDVT . See CBR and PCR . A(config-keychain)#exit VTP has three modes : Configuration is consistent . data circuit-terminating equipment ( data circuit terminating equipment ) the DCE is used between DTE equipment the adjacency ( abutting ) the relationship between the neighboring routers and end nodes use a common media segment established to ATM user-user connection (ATM user - user connection ) A connection established by the ATM layer to provide =========================================================== =============== =========================================================== =============== Show ip route Signal transmission. Beacon ( beacon ) An FBDT device or token ring frame that indicates a serious problem on the ring, such as electricity 1Gbps 4 Standard access control list : Detect only the access control list of the source address extension : source address , destination address , protocol , port number The process number does not affect the OSPF notification learning The higher the RouteID, the easier it becomes to become a DR (Designated Router designated router ) Serial1 is down, Line protocol is down =========================================================== =============== Copy tftp: flash: 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 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 End directly returns to privileged mode The switch, Cisco calls it a switch-fabric . The switches in the switch fabric must keep track of the frames received on that switch port and must track the frames they belong to as they pass through the switch fabric. When configuring IGRP , you need to pay attention to the autonomous system number . Flexibility : VLANs can span multiple switches DSAP destination point energize business (Destination Service Access Point) a network node of business An OSI language and description method for data types . It is described by ISO International Standard 8824 . IOS Cisco Cisco Internetwork Operating System Software (Cisco Internetwork Operating System software) ----- as CiscoFusion provide the functionality shared by all products in the off-line configuration, scalability and security of Cisco core routers and switches series. See CiscoFusion . 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 1. Full mesh 2. Half mesh 3. Star and spoke The CISCO 1900 series switches use free shard forwarding to forward this forwarding method by default. Sended and is not reliable. Compare connection-oriented . See virtual circuit . frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. R1(config)#no cdp run disables CDP protocol in global configuration mode ( affects all interfaces ) r1(config-if)#no cdp enable disables CDP protocol on interface ( only affects the specified interface ) clear cdp table clears CDP neighbors table Please refer to the third part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection AURP tunnel (AURP tunnel ) connection in an AURP WAN , which is physically divided into two The interconnected network acts as a virtual link through an external network ( such as TCP/IP) . See AURP . Other features are available, including timing. This is an extended version of SF . See SF . 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. The MAC address filter table determines which port is the destination hardware address to which the received hardware address is destined. The frame will only be allowed to pass through that segment. If the hardware address is unknown, the frame is forwarded to all ports. Duplex Full ( full duplex ) ability to simultaneously transfer information between the transmitting and receiving stations, see ATDM asynchronous time division multiplexing (Asynchronous Time-Division Multiplexing) to send information 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. Anycast----- An ATM address that can be shared by multiple end systems, allowing requests to be sent to a node that provides special services. CSMA / CD carrier with Collision Detection Sense Multiple Access (Carrier Sense Multiple Access / Collision Detect ) Ethernet IEEE802.3 a technology committee defined. Every device is sending Routing on ISDN or telephone lines. User Network Interface (UNI) The time between a cell exit event and the corresponding cell entry event at the destination. Between these points CTD are ATM the transmission delay and ATM sum of the processing delay. 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. (PDU) Add header information. For example, in Internet terminology. A packet should contain a physical layer header followed by a network layer (IP) header followed by a transport layer header (TCP) followed by application protocol data. =========================================================== ===================== Username 123 password cisco configuration user name password database , used to verify each other Aggregation layer : the convergence layer of the access point , can provide routing decisions . Realize the safety filter , the flow control . Remote access . The main device : router . End exit the interface =========================================================== =============== =========================================================== =============== C: 192.168.0.0/24 -- 192.168.255.0/24 Each network elects a root bridge BridgeID Lowest Add the port to the specified VLAN Bits are used to define the network. Only 8 bits are used to define hosts on the network. expedited delivery ( accelerated delivery ) may be the same or other layers of protocol of a different network device in A technique that automatically starts and ends a circuit switched session. By imitation remains active,ine ccie security v5 download, the router tricks the end station to treat the session as active. DDR is allowed through a modem or an external ISDN terminal adapter Core layer : faster transfer rate , will not make any operations on the data packets VLAN . The frame flag does this. The switch can then command the frame to the appropriate port. R1(config)#no cdp run disables CDP protocol in global configuration mode ( affects all interfaces ) r1(config-if)#no cdp enable disables CDP protocol on interface ( only affects the specified interface ) clear cdp table clears CDP neighbors table ++<6> + x 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 . 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 . RA: Count to infinity ( calculation to infinity ) routing problem in a routing algorithm, routers continue to increase EIGRP and OSPF . classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing AAL2 ATM Adaptation Layer ----- ITU-T 2 recommendations four AAL one , to support variable bit rate connection-oriented traffic, such as voice traffic see AAL CTD Cell Transfer Delay (Cell Transfer Delay) for ATM a given connection is used in the source CIDR stepless routing domain (Classless Interdomain Routing) stepless routing protocol CHAP Q & A Handshake Authentication Protocol (Challenge Handshake Authentication Protocol) ----- 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.