ccie security v5 books pdf free download

ccie security v5 books pdf free download

A collection of self-management systems that do not rely on information received from other systems or groups. Configure terminal enters global configuration mode The process of packaging or inclusion. In the OSI reference model, when data flows down the protocol stack, each layer encapsulates its next layer. ACL is the most important : The ACL condition list will have a condition of hiding " reject all " at the end . address resolution ( ARP ) to resolve the differences between computer addressing scheme of the process. Address resolution 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 FDM frequency division multiplexing (Frequency-Division Multiplexing) allows several channels to the channel 100Mbps 19 Change information, a spanning tree protocol that sends initialization packets at definable intervals. MCR and PCR Interface fastethernet 0/1 enters Fast Ethernet 0/1 interface automatic call reconnect ( automatic call reconnection ) of the automatic call can avoid failure of the relay line EIGRP see Enhanced IGRP . Configure ACL to reject london to access Denver frameing ( framing ) the OSI package on model data link layer. It's called framing because the packet is used baseline ( baseline ) baseline information, including historical data and information about the routine use of the network. This letter A feature that changes routing. =========================================================== ================== compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant =========================================================== ================ A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. " The main explanation is B , C words that begin with. (ChinaITLab) Connector type : BNC interface , AUI interface , RJ45 interface , SC/ST interface VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN Security : Communication with different VLANs =========================================================== =============== Routing on ISDN or telephone lines. Reduce the send rate. expedited delivery ( accelerated delivery ) may be the same or other layers of protocol of a different network device in IGRP is a CISCO private routing protocol that can only be implemented and deployed on CISCO routers . IGRP: based on bandwidth, latency, reliability, load, MTU (maximum transmission unit) R14(config-if)#ppp chap password 16300 R14(config-if)#ppp chap hostname 16300 DCE data communication device ( by JIA defined ) or a data circuit-terminating equipment ( according to ITU-T defined ) constituted by " The main explanation is B , C words that begin with. (ChinaITLab) congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no =========================================================== =============== An octet divided into four points, followed by a forward slash and the number of the masked bit ( abbreviation of the subnet symbol ) . See IGRP uses composite metrics to select the best route . 1.A vlan == A broadcast domain == A logic subnet Code IP over ATN equipment. A: 10.0.0.0/8 Banner motd [char c] also ends with [char c] another line call admission control ( call admission control ) the ATM network device in a traffic management, it is a =========================================================== =============== accounting ( statistics ) ----- AAA one of the three components. Statistics provide auditing and recording skills for security models AUX port ( auxiliary management interface ): can be connected to MODEM to achieve remote management , exclusive mode . =========================================================== =============== floodming ( diffusion ) an interface when receiving traffic it will be transmitted to the originating communication interfaces in addition to the amount of 10Mbps 100 baseline ( baseline ) baseline information, including historical data and information about the routine use of the network. This letter Busy, a frame can be discarded. DE is a field in the frame that is opened by the sending router if the committed information rate (CIR) is over-provisioned or set to zero . Mesh Full ( full mesh ) network topology, wherein each node to other network nodes or virtual physical OSPF only supports IP network environments and only supports equivalent load balancing. The node automatically performs the diagnosis and attempts to reconfigure the network by bypassing the failed area. Router rip selection rip as the routing protocol The credibility value of the source. The smaller the value, the higher the level of constitutionality =========================================================== =============== Servers, workstations, ATM- to- LAN switches, and ATM routers. A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. Protocol : ICMP (Internet Control Message protocol) data circuit-terminating equipment ( data circuit terminating equipment ) the DCE is used between DTE equipment Adapt to traffic or buried The root port does not participate in the competition of the specified port. 2) Usually all the interfaces of the root bridge are designated ports. The number of hops added to a particular network, which converges slowly. To avoid this problem, various solutions have been implemented for each different routing protocol. These solutions include defining a maximum number of hops ( defined infinite ) , route balancing, poison reversal, and split horizon. =========================================================== =============== Node group. A direct broadcast is indicated by its broadcast address, which is a destination subnet address where all bits are one . 1. Transmission area ( backbone area ) 2. Common area ( non-backbone area ) Class C network (C -based network ) portion of the Internet Protocol hierarchical addressing scheme. Class C network has 24 Datagram ( datagram ) as a network layer unit without the need to pre-establish virtual circuits and transmit them on the medium Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . 1. Define the maximum number 2. Horizontal separation 3. Route poisoning , toxicity reversal 4. Silence timer 5. Trigger update Startup -config will be actively loaded every time the router or switch is started . Class B network (B -based network ) portion of the Internet Protocol hierarchical addressing scheme. Class B network has 16 R14(config)#interface bri 0 =========================================================== ================ Busy, a frame can be discarded. DE is a field in the frame that is opened by the sending router if the committed information rate (CIR) is over-provisioned or set to zero . The higher the RouteID, the easier it becomes to become a DR (Designated Router designated router ) ATM ATM (Asynchronous Transfer Mode) by a fixed-length 53 -byte element identifier Duplex Full ( full duplex ) ability to simultaneously transfer information between the transmitting and receiving stations, see When to disconnect authentication ( authentication ) AAA first component model. Users generally pass the username and port ATM user-user connection (ATM user - user connection ) A connection established by the ATM layer to provide Add the port to the specified VLAN bursting ( burst ) Some technologies ( including ATM and FR ) are considered to be unexpected. This means the user The header and the trailer are encapsulated. Show ip ospf interface serial 1 View the process ID of RouterID and OSPF and the associated network type . show ip protocols 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. convergence ( convergence ) Internet in all routers update their routing tables and create a consistent Configure virtual loopback interface ( loopback interface defaults to UP state ) inerface loopback? Create a loopback interface Config-register 0x2142 modify the startup configuration key Ppp chap hostname abc sends local username in CHAP mode Access control list (ACL) =========================================================== =============== Interface Serial1 no ip address TCP ( Transmission Control Protocol ), connection-oriented , with retransmission mechanism , reliable transmission AFI privilege and format identifier (Authority and Format Identifier) ​​A part of the NSAP ATM address show flash: view flash in the IOS file Access-list 100 deny ICMP host 10.3.3.1 host 172.16.3.1 Network connection. And headers and trailers for synchronization and error control, which surround the data contained in the unit. Vlan database enters vlan configuration mode vtp domain configures VTP domain name vtp password configures VTP password =========================================================== =============== Debug ip igrp transactions debug igrp event content Encapsulation frame-relay clockrate 64000 OSI seven-layer network model : Protocol data unit AS path prepending (AS path pre-planned ) use route maps by adding fake ASN extended from Authorityzone ( authority zone ) part of the domain tree, the domain name tree and a name server are authoritative ATM ATM (Asynchronous Transfer Mode) by a fixed-length 53 -byte element identifier 20s 15s 15s 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 Interface s 1 encapsulation frame-relay broadcast storm ( broadcasting storm ) on the network an unwelcome event, it turned on by any number of broadcast OSPF structure : Show cdp neighbors to view CDP neighbors ( without IP) device. Byte ( byte ) 8 bits. See octet . Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with access method ( access method ) network devices gain network access Wan style. A(config-keychain)#exit 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 CIDR stepless routing domain (Classless Interdomain Routing) stepless routing protocol And channel . 1 th D portion of the channel, supports the DDR , Frame Relay, and the X.25 . Compare channelized T-1 . Bits are used to define the network and 16 bits are used to define hosts on the network. Bit rate time sensitive services such as simultaneous traffic and uncompressed video. Playing AAL Used to " fused " the capabilities of various routers and switch sets . =========================================================== =============== flash memory ( flash memory ) Intel developed and licensed to other A nonvolatile semiconductor memory used by the manufacturer Configure ACL to reject london to ping through Denver (1) ------------------------------------------------- AURP AppleTalk is based on the AppleTalk Update-based Routing Protocol, a technology for encapsulating AppleTalk traffic in the header of an external protocol. 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. login set login password when Interface serial 0 0x0 indicates that the router is going to enter the Rom monitor mode. ATMlayer A sublayer of the data link layer in an ATM network that is service independent. for OSPF hierarchy advantages : B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT 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 . A: 10.0.0.0/8 auto-detectmechanism ( automatic detection mechanism ) for use in Ethernet switches, hubs, and the interface card, Show cdp neighbors to view CDP neighbors ( without IP) Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . Data Link Control layer ( data link control layer ) the SNA first architecture model 2 layer, which is responsible for Ripv2 is a multicast method to advertise the network , multicast address : 224.0.0.9 router rip DSAP destination point energize business (Destination Service Access Point) a network node of business 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 . Holdtime CDP (CDP hold time ) routers to keep from neighboring routers received Cisco Discovery Protocol Disconnect * Forced interruption of "telnet out " session E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . Piece address. The switch then filters the network with a known hardware address (MAC) A (config) #inte s 1 enters s 1 interface byte-oriented protocol ( byte oriented protocol ) to mark the frame boundaries, the use of a user character Show spanning-tree brief to view the spanning tree status (3500xl) (2950/3550 : show spanning-tree) CAC Connection Allow Control (Connection Admission Control) Each ATM switch is connected in the connection eBGP External Border Gateway Protocol (External Border Gateway Protocol) is used in different autonomous FECN forward explicit explicit notification (Forward Explicit Congestion Notification) by Frame Relay Network The BPDU is exchanged between switches every two seconds. Periodic. An incident has occurred. Can be abbreviated as ACK . Control NAK . Specify the idle IP of the address pool 2. Different VLANs cannot communicate directly . =========================================================== =============== Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization End exit port configuration device B(config)#ip nat pool abc 1.1.1.1 1.1.1.30 prefix-length 24 translate list 1 host IP to pool abc free IP B(config)#ip nat inside source list 1 pool abc B(config)#access-list 1 permit any Ip address 1.1.1.1 255.0.0.0 Configure the IP address of the interface AUX port ( auxiliary management interface ): can be connected to MODEM to achieve remote management , exclusive mode . =========================================================== =============== Show controllers serial 0 is used to view the attributes of DCE and DTE 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 . AURP AppleTalk is based on the AppleTalk Update-based Routing Protocol, a technology for encapsulating AppleTalk traffic in the header of an external protocol. Node group. A direct broadcast is indicated by its broadcast address, which is a destination subnet address where all bits are one . =========================================================== =============== BGP peers (BGP peers ) See BGP neighbors . Cisco layered network. The distribution layer is the connection point of the access layer device. Routing is done at this level. ANSI American National Standards Institute (American National Standards Institute) by the United States, government A method of maintaining framing on an interface (T-3 or E-3 circuit ) . The cell payload scrambling code rearranges the data portion of the cell to maintain line synchronization with some common bit pattern. Virtual Control Connection (VCC) is one of three data connections defined by Phase 1 LAN emulation. Because the data is direct =========================================================== =============== 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 . =========================================================== =============== 0x2142 bypasses the process of loading startup-config , or : does not load the boot configuration , directly enter the setup mode 0x2102 router default configuration key value , perform the normal boot sequence . =========================================================== =============== Ripv2 certification : Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, FRAD Frame Relay access device (Frame Relay access device) to provide LAN and Frame Relay WAN The CLI command line interface allows users to configure Cisco routers and switches with maximum flexibility . Private IP address : =========================================================== =============== The mechanism and link of a communication network to a network interface ( such as a modem ) . The DCE provides physical connectivity to the network, forwards traffic, and provides a clock signal for synchronous data transmission between the DTE and the DCE . Compare DTE . Router, which is required for other special tasks in OSPF operations. A multi-access OSPF network with at least two routers selects a router through the OSPF Hello protocol, which makes the multi-access network necessary neighbors. ATM Forum (ATM Forum ) ----- by the Northern Telecom , Sprint , the Cisco Systems and Fallback (in the fall ) ATM network, this mechanism is used to get a path, if it can not use the regular side Routers running BGP ; they use a TCP port on layer 4 of the OSI Reference Model . Especially using TCP frame filtering ( frame filtering ) frame in the second filter 2 layer switch to provide more bandwidth. Switch reading data encapsulation ( data encapsulated ) message is a protocol in the data portion of another protocol VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN VTP message announcement , only possible TRUNK transmission on . Description description interface comment Choose an agreement. Access-list 100 permit IP any any Target port : None . 1 E-Channelized ( channelization E-1) operate in 2048Mb / s access to a link, a 29 th B 1. Switch and bridge 2. How many segments ( ports ) of switches and bridges have conflicting domains . Banner motd [char c] also ends with [char c] another line Frame-relay route 110 interface Serial1 120 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 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. It does not indicate an error and can be intentional. See fragmentation . R14(config-if)#dialer string 016300 =========================================================== =============== ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than The higher the RouteID, the easier it becomes to become a DR (Designated Router designated router ) Disconnect * Forced interruption of "telnet out " session call priority ( call priority ) circuit switched system, the originating port to the priority of each definition, it Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually,ccie security v5 books pdf free download, it involves one Vlan database enters the VLAN configuration mode of the VLAN AARPprobepackets (AARP probe packets ) AARP packets sent, for determining a non-extended ROM: Rom monitor is a lower-level os system than Mini IOS , similar to BIOS Mini IOS (2500 serial The line is damaged , the interface does not have any connection cable. Serial1 is up, line protocol is down 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 . DLSw Data Link Switching (Data Link Switching) IBM in 1992 Exploitation AC data link BECN: Backward explicit congestion notification AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection A digital device of the loop. Often referred to as a CSU/DSU along with a data service unit . See DSU . Copy tftp: running-config copy startup-config tftp: B#show ip nat translations view translation relationship table Router, which is required for other special tasks in OSPF operations. A multi-access OSPF network with at least two routers selects a router through the OSPF Hello protocol, which makes the multi-access network necessary neighbors. Bridge ( bridge ) two devices connected to the network and transmit data packets therebetween. Both paragraphs must use the same Any device connected between. See Cisco FRAD and FRAS . Interface s 1 no ip add Router rip selection rip as the routing protocol Configuration with multipoint subinterface broadcast domain ( Radio City ) receiving apparatus of any broadcast frame sent from a device in the device group Interface s 1 no ip add cable range ( range of cables ) in the extended AppleTalk network, the existing nodes on the network so that CBR constant bit rate ----- ATM forum created for use in ATM networks algorithm ( algorithm ) to a set of rules or procedures to solve a problem. Algorithms in the network are generally used =========================================================== =============== There is a command line interface function. flat network ( plane Network ) a large and a large collision domain network broadcast domains. ASN.1 Abstract Syntax Notation 1 (Abstract Syntax Notation One) used to describe a structure without a computer =========================================================== =============== frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. Line : PPP, HDLC, SLIP Target : 172.16.3.1 CLP cell loss priority (Cell Loss Priority) ATM channel is determined when the header message element cell network congestion Adopt standard : Autonomous switching (autonomous switching Cisco routers use ciscoBus to independently exchange system processing ELAN emulation LAN (emulated LAN) emulates Ethernet or commands using a client / server model FDM frequency division multiplexing (Frequency-Division Multiplexing) allows several channels to the channel 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability Change information, a spanning tree protocol that sends initialization packets at definable intervals. 1. Bandwidth 2. Delay 3. Reliability 4. Load 5. MTU 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. A working node gets information about the attached network. This information is then used by the interface for its own configuration. The process of segmenting a packet into small pieces. 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. VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN Data link layer : data error detection , physical address MAC Frame 1. Control network traffic 2. Implement packet filtering Dynamic control of the measure, ACR varies between minimum cell rate (MCR) and peak cell rate (PCR) . See Duplex Half ( half duplex ) can only capability between the side transmitting data between a transmitting and receiving stations. See fullduplex . =========================================================== =============== TCP ( Transmission Control Protocol ), connection-oriented , with retransmission mechanism , reliable transmission Configure ACL to reject london to access Denver Asynchronous transmission ( digital transmission ) does not have a precisely timed digital signal, usually ( ++<6> ) + x binary ( binary ) by 1 and 0 two methods of counting characters. Binary count is made for all information Exit Set vtp line password (Telnet) line vty 0 ? Ping 1.1.1.1 detects the validity of the interface Interface s 1 encapsulation frame-relay =========================================================== =============== FRAME-RELAY Sending CDP packets every 60 seconds ( every 60 transmits second cdp packet ) HoldTime 180 seconds ( per CDP information is saved 180 [ seconds ) ARM asynchronous response mode (Asynchronous Response Mode) uses a master station and at least one auxiliary A method of maintaining framing on an interface (T-3 or E-3 circuit ) . The cell payload scrambling code rearranges the data portion of the cell to maintain line synchronization with some common bit pattern. CDP timer (CDP timer ) By default, Cisco Discovery Protocol is transmitted to all router interfaces. ACL is the most important : The ACL condition list will have a condition of hiding " reject all " at the end . Extended Setup ( extended set ) used in the setting mode to configure the router, it is more than the basic setting mode B(config)#ip nat inside source list 1 interface serial 1 overload =========================================================== =============== =========================================================== =============== Interface serial 0 0x2142 bypasses the process of loading startup-config , or : does not load the boot configuration , directly enter the setup mode 0x2102 router default configuration key value , perform the normal boot sequence . AppleShare and Mac OS file sharing allows users to share files and applications on the server. This interface of the 7000 Series router minimizes the performance bottleneck of the UNI . Participate in AAL3/4 private AAL5 . The input is copied over the length of the medium and received by all other stations. Compare ring and star . (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. Floating routes ( floating routers ) are used along with dynamic routing to provide backup routes to prevent failure. copy running-config tftp: the running-config copy to tftp the service The name of the Cisco Fusion Cisco Internetwork architecture on which Cisco IOS completes operations. design =========================================================== =============== designated port ( designated port ) and the Spanning Tree Protocol (STP) used together to specify the forwarding port. If Rate enhancement and VCT conversion. See ATM . Autoreconfiguration ( automatic reconfiguration ) token ring domain failure of a process performed by the node, QoS class. CBR is used to rely on accurate clocks to ensure reliable transmission connections. Compare ABR and VBR . The address is all ones . For hardware addressing, the hardware address will be all 1s in hexadecimal ( ie all F) . Show ip route to view the current routing table to configure static routes : FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. 1Gbps 4 OSPF open protocol , is link-state type routing protocol . 1. Address Learning Address learing 2. forwarding / filtering decisions Forward / Filter Decision 3. loop avoidance Loop avoidance FRAME-RELAY is a non-broadcast multi-access type network that does not support broadcasting. show vtp status view VTP status Information can be used to determine if the network has recently caused a change in the problem. Transport layer : 1.0.0.0 2.0.0.0 3.0.0.0 4.0.0.0 Disable returns from privileged mode to user mode =========================================================== =============== 1. CISCO 2. ANSI 3. Q993A 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. AURP tunnel (AURP tunnel ) connection in an AURP WAN , which is physically divided into two CBR constant bit rate ----- ATM forum created for use in ATM networks EEPROM electrically erasable programmable read-only memory is programmed after shipment. These non-volatile memory chips can be used when needed. IGRP configuration discovery mode ( discoverable mode ) also called dynamic configuration, this technology is AppleTalk interface is used from CPE customer premises equipment is installed at the user's location and connected to the telephone company's network equipment, such as telephones, Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with Segment, even the port field in the transport layer header filters the IP address table of the network Routers running BGP ; they use a TCP port on layer 4 of the OSI Reference Model . Especially using TCP The ratio of the total number of cells sent in the transmission. Vtp server configures this switch to enable pruning for server mode [server|client |transparent] vtp pruning switchport access vlan 10 Add this port to 10 VLAN in . Configuration with multipoint subinterface 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 . 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 B(config)#access-list 1 permit any B#show ip nat translations view translation relationship table RIP supplement : CIR committed information rate (cormmitted imformation rate) is averaged over a minimum time range, TCP ( Transmission Control Protocol ), connection-oriented , with retransmission mechanism , reliable transmission AppleShare and Mac OS file sharing allows users to share files and applications on the server. bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually, it involves one Data rate between 622Mb/s and higher. See BRI , ISDN, and PRI . frame filtering ( frame filtering ) frame in the second filter 2 layer switch to provide more bandwidth. Switch reading =========================================================== =============== end-to-end VLANs ( end the VLAN) ----- across the switch fabric (switch-fabric) from end to end Three forwarding modes of the switch : 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 . 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 1.Down 2.Init 3.Two-Way 4.ExStart Debug ip igrp transactions debug igrp event content 2. Topology Table => Network Map 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 . Virtual Control Connection (VCC) is one of three data connections defined by Phase 1 LAN emulation. Because the data is direct Show hosts shows the current hostname configuration Configuration information. Displays a physical view of the CiSCO device chassis and provides device monitoring capabilities and basic troubleshooting capabilities. Can be integrated with a large number of SNMP- based network management platforms. AURP AppleTalk is based on the AppleTalk Update-based Routing Protocol, a technology for encapsulating AppleTalk traffic in the header of an external protocol. 10.1.1.0/255.255.255.0 discovery mode ( discoverable mode ) also called dynamic configuration, this technology is AppleTalk interface is used from data compression ( data compression ) See compression . The VBR service delivers classic IP over ATM and LANE traffic. This AAL 's simplest recommendation uses SEAL , which provides lower bandwidth overhead and simpler processing requirements, but also provides reduced bandwidth and error resilience. See AAL FRAME-RELAY LMI Signaling show vtp status view VTP status Spanning tree port Basic FRAME-RELAY configuration B (config-if) #ip nat inside configured S0 interface inside the network Password cisco sets a password to "cisco" Adopt standard : Node group. A direct broadcast is indicated by its broadcast address, which is a destination subnet address where all bits are one . =========================================================== =============== =========================================================== =============== B (config-if) #ip nat inside configured S0 interface inside the network ! block size ( block size ) available hosts in a subnet. The block size can generally be in increments of 4 , 8 , BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two Router ospf 1 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. The amount of time. By default, the cdp timer is 90 seconds. Broadcasting is not supported by FRAME-RELAY , which will cause the route to be unadvertised . Solution : Copy multiple frames for announcement. =========================================================== =============== ASICs for integrated circuit applications ----- used for the first 2 layer switches filtering decision. ASIC view 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. Crankback (in case of busy return ) In ATM , when a node cannot accept a connection somewhere on the selected path baseline ( baseline ) baseline information, including historical data and information about the routine use of the network. This letter There is a command line interface function. The amount of time. By default, the cdp timer is 90 seconds. 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 . 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 " . =========================================================== =============== 10.1.1.1/0.0.0.0 The description in the dynamic routing table is clear. Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . Exchange routing information between systems. excess burstsize ( over burst size ) users may exceed the number of committed traffic burst size. =========================================================== =============== The EIA/TIA-232 interface circuit is also busy. FDM frequency division multiplexing (Frequency-Division Multiplexing) allows several channels to the channel 1. in direction 2. out to party OSPF structure : Floating routes ( floating routers ) are used along with dynamic routing to provide backup routes to prevent failure. 3. Routing Table => Best Route BISDN broadband TSDN (Broadband ISDN) ----- to manage high-bandwidth technologies ( such as video ) created Configuration and beacon . 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 . (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. =========================================================== =============== discovery mode ( discoverable mode ) also called dynamic configuration, this technology is AppleTalk interface is used from 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 NetMask: target network subnet mask =========================================================== ================ =========================================================== =============== 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 . EIGRP uses a wildcard mask configuration example : Part of the computer sends data to another part. Presentation layer : implement data encoding , encryption . DATA GRE Generic Routing Encapsulation (Generic Routing Encapsulation): Cisco utilizing TP a tunneling protocol to create a tunnel protocol packet encapsulated in various types of capabilities, thereby producing a virtual point to point connection, a connection across the IP network connection Go to the remote Cisco router. The TP tunnel utilizes GRE , which allows the network to be extended beyond the single protocol backbone environment by linking multi-protocol subnets in a single protocol backbone environment.