ccie security v5 advanced technologies

ccie security v5 advanced technologies

change. The central switch does not have on-site switching capabilities. Therefore, all customer connections are returned to the CO . See CO . Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . The address is all ones . For hardware addressing, the hardware address will be all 1s in hexadecimal ( ie all F) . =========================================================== =============== ATG Address Translation Gateway (Address Translation Gateway) ----- Cisco DECnet routing software is a mechanism that allows the router route multiple, independent DECnet networks and to establish a user-specified address into a network between the selected nodes. Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with 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 . 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 Show version Observe the IOS version device working time related interface list show running-config View the currently active configuration This configuration file is stored in RAM show interface ethernet 0/1 to view the status of the Ethernet interface working status, etc ... BIP bit interleaved parity (Bit Interleaved Parity) ATM are used to monitor the link on the error 1.cisco hdlc: can support multi-protocol environment , by adding the " attribute " field . 2.standard hdlc: only support single-protocol environment 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. lOBaseT , Fast Ethernet, and lEEE . Debug ip eigrp neighbor debug neighbor creation process CIR committed information rate (cormmitted imformation rate) is averaged over a minimum time range, A terminal adapter to the ATM network. See DSU The name-to- IP address resolution is provided on the special network . An example of an FQDN is bob.acme.com . ANSI is a member of the IEC and ISO . 1Gbps 4 ATMM was ATM management (ATM Management) in ATM a protocol running on the switch tube Set startup options. 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 . The ratio of the total number of cells sent in the transmission. =========================================================== =============== Interface Serial1.1 multipoint Basic FRAME-RELAY configuration Layer and Transport layer . =========================================================== =============== Autoreconfiguration ( automatic reconfiguration ) token ring domain failure of a process performed by the node, Any device connected between. See Cisco FRAD and FRAS . =========================================================== =============== =========================================================== =================== choke packet ( packet that was blocked ) when congestion exists, it is sent to the sender of a packet, it should inform Encapsulation PPP enables PPP on the interface Duplex Auto ( automatic duplex ) of a layer and 2 a device layer disposed on, it automatically switches provided Choose an agreement. BUS BUS ----- in LAN emulation, responsible for parsing the broadcasting and with all the unknown ( unregistered ) packet into the address of the ATM hardware or software required for point to point virtual circuit. See LANE , LEG , LEGS, and LES . BX.25 AT&T 's use of X.25 . See X.25 . ISL 's main road agreement created an 802.1Q main road in 2950 Management distance: Determine which routing protocol generates routes will be adopted by the router. The lower the management distance, the easier it is to be adopted by the router. Show ip route to view the current routing table to configure static routes : Show cdp neighbors detail View CDP neighbors ( including Layer 3 IP addresses ) show cdp entry * View CDP neighbors ( including Layer 3 IP addresses ) MCR and PCR ATMM was ATM management (ATM Management) in ATM a protocol running on the switch tube frame tagging ( frame flag ) see Frame Identification . extended IP accesslist ( extended IP access list ) by logical address, the network layer protocol header word 10.1.1.0/255.255.255.0 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 . The traffic " rounds and goes to the router. RIP supplement : To understanding A technique for making more data. The route to the network. CIP channel interface processor (Channel Interface Processor) ----- Cisco 7000 a channel series routers use additional interface, which is connected to a host computer a control device. This device eliminates the need for an FBP connection channel. =========================================================== =============== Show spanning-tree interface fastEthernet 0/23 View the status of the interface in the spanning tree Or hub port duplex. flash memory ( flash memory ) Intel developed and licensed to other A nonvolatile semiconductor memory used by the manufacturer Control distribute VCC ( Control Distribution VCC) Phase I LAN simulation defines three control connections PPP 's own password configuration Endpoint ATM (ATM endpoint ) beginning or end of an ATM network is connected. ATM endpoints include data frame ( data frame ) the OSI protocol data unit package on the reference model data link layer. From the network layer vlan 10 name cisco create a named CISCO 's 10 Hao VLAN vlan 20 create a system of self-named 20 Hao VLAN Autonomous switching (autonomous switching Cisco routers use ciscoBus to independently exchange system processing 1OOBaseT is based on the IEEE 802.3U standard, 1OOBaseT is a baseband fast Ethernet using UTP wiring Terminal history size <0-256> set command buffer size 0: means no cache Each network segment elects a designated port BridgeID Lowest Relay Cell ( Cell Relay ) using small fixed size packets ( called cells ) technique. Their solid IGRP uses composite metrics to select the best route . Distance vector routing protocol: Information, if the information is not updated by the neighbor, the amount of time before it is discarded. By default, this timer is not used for 180 seconds. 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. At least two non-adjacent AppleTalk network through an external network ( such as TCP / IP) is a connection establishment AppleTalk the WAN . This connection is called an AURP tunnel. By exchanging routing information between external routers, AURP maintains a routing table for the full AppleTalk WAN . See AURP tunneL . The credibility value of the source. The smaller the value, the higher the level of constitutionality excess burstsize ( over burst size ) users may exceed the number of committed traffic burst size. Terminal history size <0-256> set command buffer size 0: means no cache DDP Datagram Delivery Protocol (Datagram Delivery Protocol) for the AppleTalk protocol as Group 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 . " The main explanation is D , E vocabulary beginning. Network 192.168.1.0 0.0.0.3 Configuring ACL allows london to telnet to Denver (2) 1.544Mb/s . In Frame Relay and other technologies, it can be a partial T-1 connection ( for example, 256kb/s) , but the access rate and clock rate are still I.544Mb/S. Disconnect * Forced interruption of "telnet out " session Control direct VCC . Basic FRAME-RELAY configuration The requested VCC determines the likelihood of a path containing the appropriate bandwidth. flash memory ( flash memory ) Intel developed and licensed to other A nonvolatile semiconductor memory used by the manufacturer Frame-relay route 110 interface Serial1 120 Ripv2 certification : =========================================================== =============== Transport layer : reliable and unreliable transport services , retransmission mechanism . Segment bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually, it involves one The header and the trailer are encapsulated. 1Gbps 4 Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , HUB Hub : A broadcast domain, a collision domain. Flooding forwarding . Shared bandwidth . Straight line : the host and switch or HUB connected Ip route 4.0.0.0 255.0.0.0 2.0.0.2 And make console configuration settings. Caused by simultaneous transmission of the network segment. Its appearance may exhaust the network bandwidth and cause a timeout. 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability Free Fragment Forwarding (cisco private technology ): between pass-through forwarding and storage forwarding performance . EIGRP external routing management distance : 170 EIGRP internal routing management distance : 90 show ip eigrp neighbors to view EIGRP neighbors 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. Acknowledgment ( acknowledgment ) is transmitted from one network device to another network device authentication, showed a Signal transmission. 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 . FECN forward explicit explicit notification (Forward Explicit Congestion Notification) by Frame Relay Network Vlan database enters vlan configuration mode vtp domain configures VTP domain name vtp password configures VTP password Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection 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 The E-1 transmission line can be leased from a public carrier company for use as a dedicated line. =========================================================== =============== Caused by simultaneous transmission of the network segment. Its appearance may exhaust the network bandwidth and cause a timeout. Border peer ( boundary peer ) manages a peer group device that exists on the edge of a hierarchical design Autonomous switching (autonomous switching Cisco routers use ciscoBus to independently exchange system processing Enhanced IGRP ( Enhanced IGRP) ----- Enhanced Interior Gateway Routing Protocol (Enhanced Interior GatewayRouting Protocol): Cisco an advanced routing protocol created, which combines the advantages of link-state and distance between the amount of protocol. Enhanced IGRP has extraordinary convergence properties, including high operational efficiency. See IGP ,ccie security v5 advanced technologies, =========================================================== =============== A recognized serial interface processor that provides four or eight high-speed serial interfaces. ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than Ethernet cable type for switch or switch to hub. 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.