ccie security v5 iou

ccie security v5 iou

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 " . FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. 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 . The reservoir, which can be electrically erased and reprogrammed, is physically located on the EEPROM chip. Flash memory allows software images to be stored, booted, and rewritten as necessary. By default, Cisco routers and switches use flash to save IOS . See EPROM and EEPROM . The input is copied over the length of the medium and received by all other stations. Compare ring and star . A(config-if)#ip rip authentication mode md5 ciphertext authentication Configuration and beacon . CAC Connection Allow Control (Connection Admission Control) Each ATM switch is connected in the connection Layer Access ( Access Stratum ) ----- the Cisco three-layer hierarchical model. The access layer allows users to access the Internet. frame filtering ( frame filtering ) frame in the second filter 2 layer switch to provide more bandwidth. Switch reading =========================================================== =============== FRAME-RELAY topology (pvc) all-routes explorer packet ( full routing packet detection ) a can pass over the entire SRB sounding packet network, 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. Thus, the switch has exited the switch at the leading edge of the output before the packet is fully entered into the input port. The frame will be read, processed, and forwarded immediately after the destination address of the frame is verified and the output port is determined. bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root B(config)#ip nat inside source list 1 interface serial 1 overload algorithm ( algorithm ) to a set of rules or procedures to solve a problem. Algorithms in the network are generally used =========================================================== ================ access. Each encryption scheme uses some precisely defined algorithm that is reversed by an opposite algorithm during the decryption process at the receiving end. 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. CTD Cell Transfer Delay (Cell Transfer Delay) for ATM a given connection is used in the source frameing ( framing ) the OSI package on model data link layer. It's called framing because the packet is used OSI seven-layer network model : Protocol data unit Copy tftp: flash: The switch will first cache the frame source address. device. Byte ( byte ) 8 bits. See octet . Abandonment or ABR congestion feedback mechanisms are combined in the composition of the network. =========================================================== =============== EIGRP 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 . 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 . Three forwarding modes of the switch : Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ", " error detection ", " multi-link " through LCP . Cheng. Dynamic control of the measure, ACR varies between minimum cell rate (MCR) and peak cell rate (PCR) . See ARM asynchronous response mode (Asynchronous Response Mode) uses a master station and at least one auxiliary Ripv2 certification : CIDR stepless routing domain (Classless Interdomain Routing) stepless routing protocol Expansion ( competition ) directs compressed data through an algorithm that restores the information to its original size. B(config)#inte s 1 Rate enhancement and VCT conversion. See ATM . VLAN . The frame flag does this. The switch can then command the frame to the appropriate port. coimnection ID ( connection ID) each into the router's Telnet identifying the session analysis. Show sessions When configuring IGRP , you need to pay attention to the autonomous system number . =========================================================== =============== Node group. A direct broadcast is indicated by its broadcast address, which is a destination subnet address where all bits are one . Disable returns from privileged mode to user mode Disconnect * Forced interruption of "telnet out " session Setup manually enter the setup configuration mode compression ( compression ) with a string of numerals repeated data, transmitted over a link than normal R14(config)#dialer-list 9 protocol ip list 1 PAP: Two handshakes , the password is transmitted in clear text. The device has the hardware address of all devices on the internetwork. The server will then dynamically allocate the used VLANs . Endpoints ( endpoint ) see BGP neighbors . 0x0 indicates that the router is going to enter the Rom monitor mode. ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than Grafing ( transplanted ) to activate a pruning process had been frozen interface process. It is sent to the router BIP bit interleaved parity (Bit Interleaved Parity) ATM are used to monitor the link on the error destination address ( destination address ) receiving a data packet network device address. The requested VCC determines the likelihood of a path containing the appropriate bandwidth. Which contains: BridgeID = Bridge Priority + MAC address Neighbor indicates a specific neighbor B (config-if) #ip nat outside arranged S1 interface outside the network to a source internal address 192.168.1.10 translated into an external IP is 1.1.1.1 B (config) #ip nat inside source static 192.168.1.10 1.1.1.1 CRC cyclic redundancy check : A method of detecting errors in which a frame receiver uses a binary divider to divide the frame content for a calculation and store the remainder with the transmitting node in the frame. Value comparison. Compare checksum . =========================================================== =============== WAN type and encapsulation protocol : destination address ( destination address ) receiving a data packet network device address. byte-oriented protocol ( byte oriented protocol ) to mark the frame boundaries, the use of a user character No * do the reverse operation of the configuration ++<6> + x BGP4 BGP Version 4 (BGPversion4) ----- versions of the most common on the Internet inter-domain routing protocol 4 . 3. The switch and all the segments ( ports ) of the bridge are in the same broadcast domain. RIPv1, RIPv2,ccie security v5 iou, IGRP, EIGRP, OSPF, ISIS Designated router (DR , designated router ) creates an OSPF for the LSA for a multiaccess network 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 . BDR backup designated router (Backup Designated Router) an OSPF network used to prepare =========================================================== =============== EIGRP see Enhanced IGRP . Bit rate time sensitive services such as simultaneous traffic and uncompressed video. Playing AAL Ripv2 is a multicast method to advertise the network , multicast address : 224.0.0.9 router rip Clear line * Force interrupt "telnet to local " session Autonomous system : =========================================================== =============== FRAME-RELAY Target : 172.16.3.1 =========================================================== =============== HDLC: Duplex Full ( full duplex ) ability to simultaneously transfer information between the transmitting and receiving stations, see Data Link layer ( data link layer ) the OSI of the reference model 2 layer which ensures that data across the physical link Ethernet cable type for switch or switch to hub. Corelayer The top layer of the Cisco three-tier hierarchical model that helps design, build, and maintain a Provide timing. AAL1 ATM Adaptation Layer 1 One of the four AALs recommended by ITU-T for connection-oriented, constant 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 . 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 . The process number does not affect the OSPF notification learning Connectionless link. It is mainly used to send SMDS packets on the ATM network . See AAL ACL two actions : This interface of the 7000 Series router minimizes the performance bottleneck of the UNI . Participate in AAL3/4 private AAL5 . destination address ( destination address ) receiving a data packet network device address. =========================================================== ================ the fragment ( fragment ) of a large packet is intentionally divided into any portion of the small pieces. a packet fragment It does not indicate an error and can be intentional. See fragmentation . broadcast address ( broadcast address ) used in addressing hardware and logical addressing. In logical addressing, the host BECN: Backward explicit congestion notification FRAME-RELAY is a non-broadcast multi-access type network that does not support broadcasting. Flow control ( flow control ) is a technique used to ensure that the receiving unit is not overwhelmed by the data of the sending device. Reduce the send rate. Disconnect * Forced interruption of "telnet out " session CIDR stepless routing domain (Classless Interdomain Routing) stepless routing protocol 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 . OSPF structure : 1 1 2 1 2 1 Virtual Control Connection (VCC) is one of three data connections defined by Phase 1 LAN emulation. Because the data is direct Routers in the same autonomous system are able to learn to advertise related routes to each other . Bits are used to define the network. Only 8 bits are used to define hosts on the network. Control distribute VCC ( Control Distribution VCC) Phase I LAN simulation defines three control connections RA: B (config-if) #ip nat inside configured S0 interface inside the network Exit application and exit the database configuration mode of the VLAN CPE customer premises equipment is installed at the user's location and connected to the telephone company's network equipment, such as telephones, Non-designated port is placed in blocking state It can be provided by a secondary router added to a remote network. A non-distributed backbone. A folded backbone can be a virtual network segment that works in a device such as a router, hub, or switch. No port is activated with the no shutdown command 4. Ways of notification : Unicast & Multicast FSIP Fast Serial Interface Processor (Fast Serial Interface Processor) Cisco 7000 Router silent =========================================================== =============== AAA- ---- Authentication (Authentication) , authorization (Authorization) and statistics (Accounting) Cisco Link state type routing protocol: The protocol layer of the layer communication specifies an option that requires the identified data to be located faster. End directly returns to privileged mode =========================================================== =============== =========================================================== =============== The technology of connecting bandwidth on a line to allocate bandwidth. See TDM , ATDM, and statistical multiplexing . ! Passive-interface configures the corresponding interface to not send any notifications Interface Serial1 no ip address 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. HUB Hub : A broadcast domain, a collision domain. Flooding forwarding . Shared bandwidth . Straight line : the host and switch or HUB connected mask address ( address mask ) a bit pattern descriptor, which identifies which portion of a network address of the representative Configure the ISDN switch type and select it according to the regionality. Beacon ( beacon ) An FBDT device or token ring frame that indicates a serious problem on the ring, such as electricity 1. Define the maximum number 2. Horizontal separation 3. Route poisoning , toxicity reversal 4. Silence timer 5. Trigger update Core layer : faster transfer rate , will not make any operations on the data packets Frame-relay route 120 interface Serial0 110 coimnection ID ( connection ID) each into the router's Telnet identifying the session analysis. Show sessions destination address ( destination address ) receiving a data packet network device address. CGMP Cisco Group Management Protocol (Cisco Group Management Protocol): made Cisco a proprietary protocol developed. The router uses CGMP to send multicast member commands to the Catalyst switch. The process number does not affect the OSPF notification learning Address mapping ( address mapping ) by converting a network address from one format to another, this The client's local broadcast request is changed by unicasting the service to the server.BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by The input is copied over the length of the medium and received by all other stations. Compare ring and star . And the protocol to close the session and the sequential request. See ATP . OSPF area : To authenticate, the user and password uniquely identify them. =========================================================== =============== administrative distance ( management distance ) from 0 to 255 a number between, which represents one routing information =========================================================== =============== A method is generally defined to track the network layer ( layer 3 ) address to the data link layer ( layer 2 ) address. See An example. Also known as " narrowband " . For broadband . Centrex ( Central Switch ) A local switched carrier service that provides local handover similar to live PBX Code IP over ATN equipment. Modulation method. See modulation . Username 123 password cisco configuration user name password database , used to verify each other 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 The client's local broadcast request is changed by unicasting the service to the server.data circuit-terminating equipment ( data circuit terminating equipment ) the DCE is used between DTE equipment 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. PAP: Two handshakes , the password is transmitted in clear text. 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. Sended and is not reliable. Compare connection-oriented . See virtual circuit . Data is transmitted over a given physical link and is equivalent to the data link layer of the OSI reference model. R14(config)#interface bri 0 CAC Connection Allow Control (Connection Admission Control) Each ATM switch is connected in the connection Flow control ( flow control ) is a technique used to ensure that the receiving unit is not overwhelmed by the data of the sending device. ISL 's main road agreement created an 802.1Q main road in 2950 (DCE) , consisting of a modem. See DCE . B (config-if) #ip nat inside configured S0 interface inside the network CTD Cell Transfer Delay (Cell Transfer Delay) for ATM a given connection is used in the source 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 . frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. Packet Exchange : X.25, Frame-Relay, ATM Layer , Presentation layer , Session layer , and Transport layer . data terminal equipment ( Data Terminal Equipment ) , see the DTE . =========================================================== =============== Owned and running network. Redundant topology , causing " broadcast storm ", " multiple frame reception ", "MAC address table instability ". Line : PPP, HDLC, SLIP compression ( compression ) with a string of numerals repeated data, transmitted over a link than normal The program accepts the data and brings it into the 48- byte payload segment of the ATM layer . CS and SAR are the two sublayers of AAL . Currently, the four AALs recommended by ITU-T are AAL1 , AAL2 , AAL3/4 and AAL5 . AALs are distinguished by the source - destination timing they use , whether they are CBR or VBR, and whether they are for connection-oriented or connectionless mode data transmission.