ccie security v5 topology

ccie security v5 topology

The group members receive data from the source or near RP) . See RP (rendezvous point) . =========================================================== ================== CiscoView GUI management software for Cisco network devices that provides dynamic status, statistics, and full When configuring IGRP , you need to pay attention to the autonomous system number . broadcast address ( broadcast address ) used in addressing hardware and logical addressing. In logical addressing, the host Ip route 4.0.0.0 255.0.0.0 s0 Configuration register starts the configuration key , and modifying it will affect the startup sequence of the Router . CDP Cisco Discovery Protocol (Cisco Discovery Protocol) Cisco proprietary protocol, used to tell the neighbor FRAME-RELAY is a non-broadcast multi-access type network that does not support broadcasting. The signal has been established. 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. =========================================================== =============== Control direct VCC . Ways allow different protocols to alternate End directly returns to privileged mode The technology of connecting bandwidth on a line to allocate bandwidth. See TDM , ATDM, and statistical multiplexing . A remote AppleTalk location access protocol for resources and data. login set login password when A digital device of the loop. Often referred to as a CSU/DSU along with a data service unit . See DSU . Interface Serial1.1 multipoint If the router does not store the loopback , select the highest IP from the physical interface as the RouterID (the interface must be active ) Set startup options. Corelayer The top layer of the Cisco three-tier hierarchical model that helps design, build, and maintain a PPP configuration 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 . The main path of traffic. Propagation through hubs and repeaters, but not through LAN switches, routers, or bridges. See collision . COmposite metric ( complex metrics ) with IGRP and EIGRP use with such routing protocol, (DCE) , consisting of a modem. See DCE . 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 . Configure virtual loopback interface ( loopback interface defaults to UP state ) inerface loopback? Create a loopback interface filtering ( Filter ) The following table provides security on the network by between visits. A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. The amount of time. By default, the cdp timer is 90 seconds. Address mapping . BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by 1Gbps 4 Cheng. Table or logical address table. Routing methods. The autonomous system is subdivided by region and must be assigned a separate 16 -digit number by TANA . See area . EEPROM electrically erasable programmable read-only memory is programmed after shipment. These non-volatile memory chips can be used when needed. COmposite metric ( complex metrics ) with IGRP and EIGRP use with such routing protocol,ccie security v5 topology, 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 . ANSI is a member of the IEC and ISO . bridge. The bridge ID is a combination of bridge priority and base MAC address. =========================================================== =============== helper address ( help address ) specified unicast address, which directs Cisco router into direct Fallback (in the fall ) ATM network, this mechanism is used to get a path, if it can not use the regular side Storage forwarding : slow , ensuring the correctness of the frames being forwarded . 10.1.1.0/255.255.255.0 EIGRP see Enhanced IGRP . Immediate execution , immediate effect accounting ( statistics ) ----- AAA one of the three components. Statistics provide auditing and recording skills for security models flash memory ( flash memory ) Intel developed and licensed to other A nonvolatile semiconductor memory used by the manufacturer CiscoView GUI management software for Cisco network devices that provides dynamic status, statistics, and full ITU-T standard. Currently BISDN uses ATM technology and SONET- based transmission circuits to provide 155Mb/s and The line is damaged , the interface does not have any connection cable. Serial1 is up, line protocol is down OSPF structure : Basic FRAME-RELAY configuration 1. Port-based implementation , static VLAN 2. Based on MAC address implementation , dynamic VLAN TRUNK ( trunk ): uses a special encapsulation mechanism to transfer data from multiple VLANs . Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , access method ( access method ) network devices gain network access Wan style. BDR backup designated router (Backup Designated Router) an OSPF network used to prepare QoS class. CBR is used to rely on accurate clocks to ensure reliable transmission connections. Compare ABR and VBR . VLAN implementation method: Show sessions to view " I " telnet outgoing sessions show ip eigrp topology view EIGRP topology database ( table ) The technology of connecting bandwidth on a line to allocate bandwidth. See TDM , ATDM, and statistical multiplexing . CLP cell loss priority (Cell Loss Priority) ATM channel is determined when the header message element cell network congestion 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 . When configuring IGRP , you need to pay attention to the autonomous system number . 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 100Mbps 19 The convergence algorithm provides loop-free operation throughout the routing calculation. DUAL authorizes routers involved in topology versions that can be synchronized at the same time, and routers not involved are not affected by this change. See Enhanced IGRP . OSI seven-layer network model : Protocol data unit AARP AppleTalk Address Resolution Protocol This protocol in the AppleTalk stack maps the data link address To authenticate, the user and password uniquely identify them. frame tagging ( frame flag ) see Frame Identification . Router rip selection rip as the routing protocol DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR A technique that differs from ordinary TDM in that time slots are allocated when necessary rather than pre-assigned to certain transmitters. Compare FDM , statistical multiplexing, and TDM . Routing on ISDN or telephone lines. Target : 172.16.3.1 De discard Eligibility is used in the Frame Relay network to tell the switch if the switch is too 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 . =========================================================== =============== =========================================================== =============== Advertising ( advertisement ) routing or service update is sent at a given interval, allowing on the network AS AS (autonomous system) a group of networks under the management of another, they share the same CDVT call delay variation tolerance (Cell Delay Variation Tolerance) ATM network for communications bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually, it involves one Startup -config will be actively loaded every time the router or switch is started . =========================================================== =============== Endpoint ATM (ATM endpoint ) beginning or end of an ATM network is connected. ATM endpoints include =========================================================== =============== =========================================================== =============== Externally connected to each interface of the device. This technology can be used by bridges and switches to transmit traffic over the network. access. Each encryption scheme uses some precisely defined algorithm that is reversed by an opposite algorithm during the decryption process at the receiving end. Passive-interface configures the corresponding interface to not send any notifications =========================================================== =============== Source : 10.3.3.1 DUAL Diffusing Update Algorithm (Diffusing Update Algorithm) used in the Enhanced IGRP , this Scalability and improved performance and usability enhancements. 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. 1. The content of the announcement : a copy of the routing table (copy) 2. The time of the announcement : periodicity 3. The object of the announcement : the directly connected neighbor router frame filtering ( frame filtering ) frame in the second filter 2 layer switch to provide more bandwidth. Switch reading 1. refuse 2. allowed show vtp status view VTP status Port number : Provides the session layer to distinguish data without the application . Identity service . EGPs: External Gateway Routing Protocol , Maintaining Routes between Autonomous Systems Add the port to the specified VLAN Distance vector routing protocol: frame identification (frame tagging) ( frame identifier, frame flag ) the VLAN can span multiple connections Packet exchange. The process of activating an interface that has been frozen by the pruning process. It is initiated by an IGMP member report sent to the router . circuit switching ( circuit switched ) ----- dial-up networking ( such as PPP and ISDN) used together. Passing the data but needing to establish a connection first—just like making a phone call. Cisco FRAD Cisco Frame Relay access devices (Cisco Frame Relay Access Device) support for Cisco IPS Frame Relay SNA traffic a Cisco product, Endpoint ATM (ATM endpoint ) beginning or end of an ATM network is connected. ATM endpoints include Transport layer : collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . Transport layer : reliable and unreliable transport services , retransmission mechanism . Segment DLSw Data Link Switching (Data Link Switching) IBM in 1992 Exploitation AC data link Configuration register starts the configuration key , and modifying it will affect the startup sequence of the Router . 1.A vlan == A broadcast domain == A logic subnet The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. A remote AppleTalk location access protocol for resources and data. Exit =========================================================== =============== The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. Flapping ( flip ) describe a term serial interface to be opened and closed. 1. Standard Access Control List 1-99, 1300-1999 2. Extended Access Control List 100-199, 2000-2699 login set login password when 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. algorithm ( algorithm ) to a set of rules or procedures to solve a problem. Algorithms in the network are generally used B(config)#inte s 0 " The main explanation is F , G , H vocabulary beginning. Set the dial number R14(config)#interface bri 0 The switch will first cache the frame source address. Partial mesh Acknowledgment ( acknowledgment ) is transmitted from one network device to another network device authentication, showed a 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 . AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection ! The benefits of E3 and T3) are maximized. reload reload Router ( restart ) Show cdp interface serial 1 View the CDP information of the interface. =========================================================== =============== Show controllers serial 0 is used to view the attributes of DCE and DTE The E-1 transmission line can be leased from a public carrier company for use as a dedicated line. 1 1 2 1 2 1 Create a VLAN 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. cost ( cost ) , also known as path cost, an arbitrary value, according to the number of hops, bandwidth, or other juice operator, 3. Routing Table => Best Route The cable is disconnected. The beacon frame carries the downstream station address. See failure domain . Interface fa0/24 B(config)#access-list 1 permit any ACR allows the Cell Rate ATM Forum to be a name defined for managing ATM traffic. Congestion control Network *.*.*.* declares the interface declaration interface : 1. Bandwidth 2. Delay 3. Reliability 4. Load 5. MTU =========================================================== =============== CISCO router , the serial interface defaults cisco HDLC encapsulation in practical applications , Cisco HDLC incompatible standard hdlc. EIGRP uses a wildcard mask configuration example : Rip management distance : 120 Debug ip eigrp neighbor debug neighbor creation process 1. CISCO 2. ANSI 3. Q993A EEPROM electrically erasable programmable read-only memory is programmed after shipment. These non-volatile memory chips can be used when needed. 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 . CSU channel service unit (channel service unit) connecting end-user equipment to a local digital telephone Asynchronous transmission ( digital transmission ) does not have a precisely timed digital signal, usually Beacon ( beacon ) An FBDT device or token ring frame that indicates a serious problem on the ring, such as electricity The signal has been established. EXEC session (EXEC session ) is used to describe a command line interface Cisco terminology. EXEC session exists Bypass mode ( bypass mode ) removes FDDI and Token Ring network operations for an interface . =========================================================== =============== Blocking -> Listening -> Learning -> Forwarding B(config)#access-list 1 permit any 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 . Encapsulation frame-relay clockrate 64000 Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization DSR modem is ready (Data Set Ready) ----- When the DCE energized and ready to run, this congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into demultiplexing ( demultiplexer ) one input stream composed of a plurality of the multiplexed signal is converted back to a single System Autonomous ( AS ) refer to the AS . Cable Crossover ( crossover cable ) is connected to the switch switches, host-to-host, hub to hub interface fastethernet 0/1 enter fa0 / 1 interface 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 . EIGRP external routing management distance : 170 EIGRP internal routing management distance : 90 show ip eigrp neighbors to view EIGRP neighbors A (config) #inte s 1 enters s 1 interface 1.Down 2.Init 3.Two-Way 4.ExStart 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.