ccie security lab pdf download

ccie security lab pdf download

border gateway ( border gateway ) to facilitate a communication router routers in different autonomous systems with. OSPF and RIP . The ratio of the total number of cells sent in the transmission. outside interface address is unknown , how do PAT configuration commands Standard access control list : Detect only the access control list of the source address extension : source address , destination address , protocol , port number 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. Frame-relay switching =========================================================== =============== boot sequence ( leader sequence ) define how routers boot. The configuration register tells the router where to go from Ppp chap password cisco sends local password in CHAP mode A (config) #inte s 1 enters s 1 interface =========================================================== =============== 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 . Scalability and improved performance and usability enhancements. =========================================================== ================ The process of OSPF creating neighbors : =========================================================== =============== R14(config-if)#dialer-group 9 Interface serial 0 100Mbps 19 BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two It enables two socket (Socket) can be reliably performed between transactions, wherein a request for another execution of a given task and to report the results. ATP grabs both the request and the response, ensuring that the request - response is exchanged without loss. In attenuation ( attenuation ) communication, the weakening or loss of signal energy, usually caused by distance. Governing system path. An interface processor used by the device to provide two lOOMb/s lOOBaseT ports. =========================================================== =============== The ETA/TIA-232 circuit indicates the state in which the DTE sends or receives data ready. 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 . Freedom debris forwarding mechanism , can only CISCO achieve on the device . CISCO router , the serial interface defaults cisco HDLC encapsulation in practical applications , Cisco HDLC incompatible standard hdlc. Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . The group members receive data from the source or near RP) . See RP (rendezvous point) . CSU channel service unit (channel service unit) connecting end-user equipment to a local digital telephone choke packet ( packet that was blocked ) when congestion exists, it is sent to the sender of a packet, it should inform =========================================================== =============== Address learnmng ( address learning ) is used with the transparent bridge to learn the hard of all devices on the internet. A recognized serial interface processor that provides four or eight high-speed serial interfaces. Encapsulation PPP enables PPP on the interface Network view, the process required to use the best possible path. No user data passed during convergence. Physical layer : NextHopIP: Next hop IP excess burstsize ( over burst size ) users may exceed the number of committed traffic burst size. End exit port configuration device Private IP address : The benefits of E3 and T3) are maximized. Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best Signal transmission. 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 FRAME-RELAY LMI Signaling R14(config)#dialer-list 9 protocol ip list 1 demultiplexing ( demultiplexer ) one input stream composed of a plurality of the multiplexed signal is converted back to a single 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 . Encapsulation frame-relay clockrate 64000 1.Server mode < main > 2.Client mode < time > 3.TransParent mode < transparent > expedited delivery ( accelerated delivery ) may be the same or other layers of protocol of a different network device in A technique for making more data. IGPs: Internal Gateway Routing Protocol , which maintains routes within an autonomous system Typically specified by the network administrator and used by routing protocols to compare different routes through an internetwork. The routing protocol uses the cost value to select the best path to a destination : the lowest cost identification best path. See routing metnC . Caused by simultaneous transmission of the network segment. Its appearance may exhaust the network bandwidth and cause a timeout. R14(config-if)#dialer string 016300 BGP =========================================================== =============== The defined length includes a 5- byte header and a 48- byte payload that identify the stream of the cell . See Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization all-routes explorer packet ( full routing packet detection ) a can pass over the entire SRB sounding packet network, OSPF area : HUB Hub : A broadcast domain, a collision domain. Flooding forwarding . Shared bandwidth . Straight line : the host and switch or HUB connected The power is erased and reprogrammed. Play EPROM and PROM . Advertising ( advertisement ) routing or service update is sent at a given interval, allowing on the network Code IP over ATN equipment. 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. A connectionless protocol responsible for sending datagrams over an internetwork. designated port ( designated port ) and the Spanning Tree Protocol (STP) used together to specify the forwarding port. If 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. Encapsulation PPP enables PPP on the interface ------------------------------------------------- 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 Halfduplex . Where to perform circuit switching. Target port : None Distance vector routing protocol: EIGRP external routing management distance : 170 EIGRP internal routing management distance : 90 show ip eigrp neighbors to view EIGRP neighbors EGPs: External Gateway Routing Protocol , Maintaining Routes between Autonomous Systems VTP Vlan Trunk Protocol AM amplitude modulation (Amplitude modulation) is a kind of information represented by the amplitude change of the carrier signal. =========================================================== ================ 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability =========================================================== =============== The location of the standard access control list application : the location of the access control list application that is applied to the interface that is closest to the target : the application is in the interface closest to the source, show ip interface serial 0, to view the configuration of the interface's acl . Route the path of the bridged network. Show history view history command ( command just used recently ) AURP tunnel (AURP tunnel ) connection in an AURP WAN , which is physically divided into two For broadcast frames and multicast data frames , the switch forwards flooding by default. A technique that allows for more data. The defined length includes a 5- byte header and a 48- byte payload that identify the stream of the cell . See The pick-up point is specified in the destination field of the packet. See SSAP and SAP . Username 123 password cisco configuration user name password database , used to verify each other Part of the original IEEE802.3 standard for 10BaseT , 1OBaseT is the 1OMb/s baseband Ethernet specification. =========================================================== =============== Part of the computer sends data to another part. =========================================================== =============== Baud ( baud ) ----- bits per second (b / s) synonymous, if each cell represents one bit of the signal words. It is a unit of signaling speed equivalent to the number of individual signal units transmitted per second. Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ", " error detection ", " multi-link " through LCP . DDP Datagram Delivery Protocol (Datagram Delivery Protocol) for the AppleTalk protocol as Group Layer Access ( Access Stratum ) ----- the Cisco three-layer hierarchical model. The access layer allows users to access the Internet. BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. Nvram: non-volatile memory , power-off information will not be lost <-- user configuration <-- startup-config ram: random access memory , power-off information is lost <-- currently effective configuration <-- running-config enable secret provided in the ciphertext enable password ( in preference to the use plaintext ) service password-encryption of all encryption system cleartext password ( weak ) data direct VCC ( data direct VCC) ATM two LEG to establish a two-way point between the switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road CAC Connection Allow Control (Connection Admission Control) Each ATM switch is connected in the connection =========================================================== ================ Advertising ( advertisement ) routing or service update is sent at a given interval, allowing on the network =========================================================== =============== Show controllers serial 0 is used to view the attributes of DCE and DTE 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 . B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT Grafing ( transplanted ) to activate a pruning process had been frozen interface process. It is sent to the router 2. Different VLANs cannot communicate directly . The law finds a word. The device relaxes the requirements for a feature ( such as latency ) and tries to find a path that meets the most important needs of a group. Line : PPP, HDLC, SLIP Layer and Transport layer . data compression ( data compression ) See compression . Provide timing. Show ip route to view the current routing table to configure static routes : Bits are used to define the network. Only 8 bits are used to define hosts on the network. Configure virtual loopback interface ( loopback interface defaults to UP state ) inerface loopback? Create a loopback interface Switchport trunk encapsulation dot1q need to choose which way [dot1q|isl] switchport mode trunk change interface mode to trunk work mode show interface trunk view current switch TRUNK configuration call admission control ( call admission control ) the ATM network device in a traffic management, it is a degree. =========================================================== =============== =========================================================== =============== Set vtp line password (Telnet) line vty 0 ? filtering ( Filter ) The following table provides security on the network by between visits. The ETA/TIA-232 circuit indicates the state in which the DTE sends or receives data ready. byte-oriented protocol ( byte oriented protocol ) to mark the frame boundaries, the use of a user character Disconnect * Forced interruption of "telnet out " session Encapsulation frame-relay Shot as a network address The three-tier architecture of the network : Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . CCNA classroom streamlined notes autonomous confederation ( Autonomous Federation ) rely mainly on their own network reachability and routing information data compression ( data compression ) See compression . A digital device of the loop. Often referred to as a CSU/DSU along with a data service unit . See DSU . RIP supplement : Autonomous switching (autonomous switching Cisco routers use ciscoBus to independently exchange system processing =========================================================== =============== 10.1.1.0/0.0.0.255 Show ip ospf interface serial 1 View the process ID of RouterID and OSPF and the associated network type . show ip protocols Owned and running network. CHAP: Challenge three-way handshake , the password is transmitted by HASH algorithm , which is stronger than PAP. A technique for making more data. CAC Connection Allow Control (Connection Admission Control) Each ATM switch is connected in the connection Use more than one metric to find the best path to a remote network. By default, both IGRP and EIGRP use the bandwidth and latency of the line. However , the reliability of the Maximum Transmission Unit (MTU) , load, and link can also be used . Each network segment elects a designated port BridgeID Lowest =========================================================== =============== B: 172.16.0.0/16 -- 172.31.0.0/16 Ip address 1.1.1.1 255.0.0.0 Configure the IP address of the interface Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . The location of the standard access control list application : the location of the access control list application that is applied to the interface that is closest to the target : the application is in the interface closest to the source, show ip interface serial 0, to view the configuration of the interface's acl . =========================================================== =============== RIPv1, RIPv2, IGRP, EIGRP, OSPF, ISIS The header information is removed from the (PDU) . See encapsulatio . DDR demand dial routing (dial-on-demand routing) allows a router according to the sending station needs interface fastethernet 0/1 enter fa0 / 1 interface B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection Action : Permit broadcast domain ( Radio City ) receiving apparatus of any broadcast frame sent from a device in the device group A recognized serial interface processor that provides four or eight high-speed serial interfaces. =========================================================== =============== 100Mbps 19 Ppp chap hostname abc sends local username in CHAP mode Which contains: BridgeID = Bridge Priority + MAC address Create a VLAN The method of traffic. Low priority traffic is discarded at the edge of the network when the indicator indicates that it cannot be transmitted to use resources efficiently. =========================================================== ================ Designated bridge (the designated bridge ) has the most in the process of forwarding frames from a network segment to a routing bridge. Set when to dial R14 (config) #access-list 1 permit any DDP Datagram Delivery Protocol (Datagram Delivery Protocol) for the AppleTalk protocol as Group There are multiple links on the same network, and STP will shut down - ports to block network loops. Spanning trees can avoid loop problems caused by redundancy . Solve the problem : put redundant ports into blocking state . Interfaces in blocking state will not receive / send user data . 1. Switch and bridge 2. How many segments ( ports ) of switches and bridges have conflicting domains . OSI seven-layer network model : Protocol data unit Designated router (DR , designated router ) creates an OSPF for the LSA for a multiaccess network Topology Bus ( bus topology ) a straight LAN off-line structure, wherein transmission from each station on the network De-encapsulation ( disassembly ) layered protocol technology, in which a layer of slave layer protocol data unit The defined length includes a 5- byte header and a 48- byte payload that identify the stream of the cell . See To authenticate, the user and password uniquely identify them. FRAS FR access support (Frame Relay Access Support) ----- Cisco IOS a characteristic of the software, which allows the SDLC , Ethernet, Token Ring and Frame Relay connections IBM upper frame relay network equipment can Other firewall ( firewall ) intentionally a barrier between any public network and a private network settings from a A(config-keychain)#exit =========================================================== =============== Interface Serial1.1 multipoint Connectionless link. It is mainly used to send SMDS packets on the ATM network . See AAL To authenticate, the user and password uniquely identify them. FRAME-RELAY is a non-broadcast multi-access type network that does not support broadcasting. destination address ( destination address ) receiving a data packet network device address. Enable enter privileged mode Network *.*.*.* declares the interface declaration interface : 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 . EGPs: External Gateway Routing Protocol , Maintaining Routes between Autonomous Systems 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. ! Passive-interface configures the corresponding interface to not send any notifications cell payload scrambling ( cell payload scrambling ) the ATM switches and certain of the edges speed relay ABR area border router ----- located in one or more OSPF area boundary OSPF routers, ABR is used to OSPF connection region to the OSPF backbone area Control direct VCC . =========================================================== =============== 10.1.1.0/0.0.0.255 Select the metric for the route : ARP ARP (Address Resolution Protocol) in RFC 826 is defined in the protocol Show spanning-tree brief to view the spanning tree status (3500xl) (2950/3550 : show spanning-tree) switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road =========================================================== =============== 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 Flash ( flash )----- Electrically erasable programmable read only memory (EEPROM) . Used by default to save CiscoIOS on the router . lOBaseT is ten times faster, while retaining properties like MAC mechanism, MTU and frame format. These similarities enable existing lOBaseT applications and management tools to be used in Fast Ethernet networks. Fast Ethernet is an extension (IEEE 802.3U) based on the IEEE802.3 specification . Compare Ethemnet . See lOOBaseT , IOOBaseTX, and IEEE . QoS class. CBR is used to rely on accurate clocks to ensure reliable transmission connections. Compare ABR and VBR . end-to-end VLANs ( end the VLAN) ----- across the switch fabric (switch-fabric) from end to end Nvram: non-volatile memory , power-off information will not be lost <-- user configuration <-- startup-config ram: random access memory , power-off information is lost <-- currently effective configuration <-- running-config Neighbor indicates a specific neighbor Fast Ethernet ( Fast Ethernet ) ---- speed lOOMb / s Ethernet specification. Fast Ethernet ratio Grafing ( transplanted ) to activate a pruning process had been frozen interface process. It is sent to the router Rip Version 2 : Enable password B: 172.16.0.0/16 -- 172.31.0.0/16 administrative distance ( management distance ) from 0 to 255 a number between, which represents one routing information =========================================================== =============== EPROM erasable programmable read-only memory----- Packaging method. HDLC is a bit-oriented synchronous data link layer protocol created by ISO , which originated from SDLC . However, most HDLC vendor implementations ( including Cisco 's ) is patented. See SDLC . Configuration is consistent . Bit ( bit, bit ) A number ; a 1 or a 0 . 8 bits make up one byte. Interface Serial1.1 multipoint bit-oriented protocol ( bit oriented protocol ) regardless of the content of the frame, the data link layer communication protocol such =========================================================== =============== VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN 1 1 2 1 2 1 (Amplitude magnitude ) the maximum analog or digital waveform. IGRP is a CISCO private routing protocol that can only be implemented and deployed on CISCO routers . Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . AARP AppleTalk Address Resolution Protocol This protocol in the AppleTalk stack maps the data link address BGP4 supports CTDR and uses a routing computer system to reduce the size of the routing table. See CIDR . The area of ​​the possibility of being discarded. Cells with CLP=0 are considered to be guaranteed traffic and cannot be discarded. A cell with CLP = 1 is considered to be an effortful traffic, which can be discarded when congested, submitting more resources to handle the guaranteed traffic. device. Byte ( byte ) 8 bits. See octet . 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. CAC Connection Allow Control (Connection Admission Control) Each ATM switch is connected in the connection CTD Cell Transfer Delay (Cell Transfer Delay) for ATM a given connection is used in the source R14(config)#interface bri 0 R14(config-if)#encapsulation ppp The interconnected network acts as a virtual link through an external network ( such as TCP/IP) . See AURP . Router rip selection rip as the routing protocol =========================================================== =============== End exit the interface ----- s1 RA s0 >-------- s1 RB s0 --------- s1 RC s0 ------ =========================================================== =============== AST Automatic Spanning Tree (Automatic Spanning Tree): to generate a probe frames from a moving network node to another node of a feature in the SRB support automatically resolve the spanning tree network. The AST is based on the IEEE 802.1 standard. See IEEE802.1 and SRB . Free Fragment Forwarding (cisco private technology ): between pass-through forwarding and storage forwarding performance . Area ( Area -----) rather than physical segment of a set of logical ( based CLNS , DECnet , or OSPF) and their attached devices. Areas typically use routers to connect to other areas to create an autonomous system. See autonomous system . ANSI American National Standards Institute (American National Standards Institute) by the United States, government bit-oriented protocol ( bit oriented protocol ) regardless of the content of the frame, the data link layer communication protocol such An international standard for transmitting cells in a variety of business systems, such as voice, video or data. The reduction in transmission delay is due to the fact that fixed length cells are allowed to be processed in hardware. ATM is designed to enable high-speed transmission media ( such as SONET , Collision ( conflict ) Ethernet two nodes simultaneously transmit the result of the transmission. When they are on physical media switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road AUX port ( auxiliary management interface ): can be connected to MODEM to achieve remote management , exclusive mode . analog transmission ( analog transmission ) represented by different combinations of the information signal amplitude, frequency and phase B(config)#inte s 0 An international standard for transmitting cells in a variety of business systems, such as voice, video or data. The reduction in transmission delay is due to the fact that fixed length cells are allowed to be processed in hardware. ATM is designed to enable high-speed transmission media ( such as SONET , Access-list 100 permit TCP host 10.3.3.1 host 172.16.3.1 eq 23 broadcast address ( broadcast address ) used in addressing hardware and logical addressing. In logical addressing, the host ASCII American Standard Code for Information Exchange (American Standard Code for Information Interchange) representing character . 8 -bit code, by the seven data bits plus a parity bit. 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. Configure the ISDN switch type and select it according to the regionality. Equipment and Tnter have jointly improved. Ethernet is similar to the TEEE802.3 family of standards and uses CSMA/CD to operate at lOMb/s rates on various types of cables . Also known as DIX (Digital/Intel/Xerox) Ethernet. See Ip route 4.0.0.0 255.0.0.0 2.0.0.2 Broadband ( broadband ) multiplexing several independent technique for transmitting signals on a single cable. telecommunications CPCS CPCS layer (Common Part Convergence Sublayer) two business congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no . 1 T-chanelined ( channel of the channel T-1) operate in 1.544Mb / s one access link is 23 is th B channels Control distribute VCC ( Control Distribution VCC) Phase I LAN simulation defines three control connections Endpoints ( endpoint ) see BGP neighbors . =========================================================== =========== Hostname configures the host local ID frame filtering ( frame filtering ) frame in the second filter 2 layer switch to provide more bandwidth. Switch reading Directed broadcast (a direct broadcast ) a data frame or packet is transmitted to a remote network segment specific Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . OSPF . Equipment and Tnter have jointly improved. Ethernet is similar to the TEEE802.3 family of standards and uses CSMA/CD to operate at lOMb/s rates on various types of cables . Also known as DIX (Digital/Intel/Xerox) Ethernet. See Broadcast ( Broadcast ) ----- a data frame or packet is transmitted to the local network segment ( defined by the broadcast domain ) for each node on. Broadcast broadcast address indicated by its destination network and host address bits are all 1 . Also known as " local broadcast " . Compare directedbroadcast . Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best FRAME-RELAY is a non-broadcast multi-access type network that does not support broadcasting. AAA- ---- Authentication (Authentication) , authorization (Authorization) and statistics (Accounting) Cisco Other bridges operate the same spanning tree algorithm, but allow packet encapsulation to be transmitted over a Frame Relay network. Configuration with multipoint subinterface EFCI Explicit Forward Congestion indication (Explicit Forward Congestion Indication) ATM network Frame-relay switching 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 . B(config)#inte s 0 Disconnect * Forced interruption of "telnet out " session The basis of word expression. =========================================================== =============== 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 . Piece address. The switch then filters the network with a known hardware address (MAC) Ripv2 is a multicast method to advertise the network , multicast address : 224.0.0.9 router rip Rip V1 uses broadcast announcement broadcast address : 255.255.255.255 helper address ( help address ) specified unicast address, which directs Cisco router into direct The route to the network. degree. 2. Different VLANs cannot communicate directly . Table or logical address table. " The main explanation is D , E vocabulary beginning. B(config)#inte s 1 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. 10.1.1.1/255.255.255.255 data encapsulation ( data encapsulated ) message is a protocol in the data portion of another protocol EIGRP see Enhanced IGRP . Enable password show ip eigrp topology view EIGRP topology database ( table ) Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . frame identification (frame tagging) ( frame identifier, frame flag ) the VLAN can span multiple connections If the source address and destination address of the data frame are from the same port , the switch will discard the data frame by default . =========================================================== =============== Username 123 password cisco configuration user name password database , used to verify each other Specifies in which order the call will be reconnected. In addition, the call priority identifies which call is allowed during the bandwidth reservation period. =========================================================== =============== B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT Note : By default , all ports are subordinate to vlan 1 ( management VLAN or system default VLAN), and VLAN 1 cannot be deleted . Ppp chap password cisco sends local password in CHAP mode Other features are available, including timing. This is an extended version of SF . See SF . nvRam : Startup-config startup configuration file , or user profile Encapsulation frame-relay Asynchronous transmission ( digital transmission ) does not have a precisely timed digital signal, usually Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection bridge priority ( bridge priority ) disposed bridge STP priority. By default all bridges take precedence CSU channel service unit (channel service unit) connecting end-user equipment to a local digital telephone If the source address and destination address of the data frame are from the same port , the switch will discard the data frame by default . Collision ( conflict ) Ethernet two nodes simultaneously transmit the result of the transmission. When they are on physical media call establishment ( call setup ) to refer to a work when the call ISDN call setup scheme. The distance limit of each segment of 1OBaseT is about 100 meters. See Ethernet and IEEE 802.3 . 1 1 2 1 2 1 Servers, workstations, ATM- to- LAN switches, and ATM routers. Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization Add the port to the specified VLAN And make console configuration settings. Caused by simultaneous transmission of the network segment. Its appearance may exhaust the network bandwidth and cause a timeout. Bit, Frame, Packet,ccie security lab pdf download, and Segment are all called : PDU (Protocol Data Unit) 0x0 indicates that the router is going to enter the Rom monitor mode. Switch function: Hide : access-list 1 deny any =========================================================== ================ Password cisco sets a password to "cisco" Access-list 100 permit IP any any (Amplitude magnitude ) the maximum analog or digital waveform. Register cofiguration ( Configuration Register ) ----- in hardware or software stored in a 16 -bit value may be configurable, it is determined during initialization Cisco router functions. In hardware, the bit position is set using a jumper. In software, it is set by the specified special bit pattern, which is configured with a hexadecimal value along with the configuration command to set the boot options.