ccie security v5 rack

ccie security v5 rack

A & B bit signaling (A and B signaling bits ) for T-1 transmission device, sometimes referred to as " the first 24 channel signals buffer ( Buffer ) designed to store data processed in the transmission. Buffer for receiving / storage Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . =========================================================== =============== 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. A random value selected by the BGP router when sending an OPEN message. 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 . DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR The credibility value of the source. The smaller the value, the higher the level of constitutionality A subsection that depicts the type and format of the IDI portion of the ATM address . End exit port configuration device =========================================================== ============== 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 . control direct VCC ( control direct VCC) ----- Phase I LAN one of three emulation control connection defined in the ATM by \ a LEG to a LES established bi-directional virtual control connection (the VCC) . See control distribute VCC . Ciscoa.njut.edu.cn =========================================================== ================ ! Frame-relay lmi-type cisco frame-relay intf-type dce ISDN channel. Compare B channel , E channel and H channel . 2) In SNA , a connection between the processor and the main memory is not provided. Debug ip igrp transactions debug igrp event content In user mode and privileged mode. control direct VCC ( control direct VCC) ----- Phase I LAN emulation defined in one of three control connections, ATM by a LEG to a LES established bi-directional virtual control connection (the VCC) . See control distribute VCC . ! Source : 10.3.3.1 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 distance-vector routing algorithm ( Distance Vector Routing Algorithm ) In order to find the shortest path, ANSI American National Standards Institute (American National Standards Institute) by the United States, government classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing The data can exceed the bandwidth normally reserved for the connection, but cannot exceed the port rate. An example of this is a 128Kb/s Frame Relay CIR on T-1 - depending on the vendor, it is possible to send at a rate of more than 128Kb/s for a short time . Show spanning-tree interface fastEthernet 0/23 View the status of the interface in the spanning tree The packet's ability to process packets faster. AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection 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 . . 1 E-Channelized ( channelization E-1) operate in 2048Mb / s access to a link, a 29 th B The pick-up point is specified in the destination field of the packet. See SSAP and SAP . 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 . =========================================================== ================ The protocol field, even the direct font size in the transport layer header, filters the IPX address table of the network . There is a command line interface function. AARPprobepackets (AARP probe packets ) AARP packets sent, for determining a non-extended The demodulator demodulates the analog signal into the original digital form ( in turn, modulates the digital data it transmits into an analog signal ) . See modulation . authentication ( authentication ) AAA first component model. Users generally pass the username and port A digital device of the loop. Often referred to as a CSU/DSU along with a data service unit . See DSU . =========================================================== =============== Target : 172.16.3.1 Each network elects a root bridge BridgeID Lowest Source port : None 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 . interface fastethernet 0/1 enter fa0 / 1 interface Three types of NAT : Switch function: Other routers maintain a record of existing available routes AEP AppleTalk Response Protocol (AppleTalk Echo BGP Broadband ( broadband ) multiplexing several independent technique for transmitting signals on a single cable. telecommunications Provide timing. DCE/DTE only exists in the WAN Devices that set frames can require higher priority protocols to take flow control if necessary. See BECN . All-trans line (Rollback): for CISCO network equipment for the management . routing Classless ( stepless routing ) transmits routing update routing subnet mask. Stepless road Circuit Switching : PPP, HDLC, SLIP 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. DCC data Country Code (Data Country Code) developed by the ATM Forum for the use of private networks compression ( compression ) with a string of numerals repeated data, transmitted over a link than normal access. Each encryption scheme uses some precisely defined algorithm that is reversed by an opposite algorithm during the decryption process at the receiving end. distribution layer ( distribution layer ) the Cisco intermediate three layer hierarchical model, which contribute to the design, installation and maintenance Modem and terminal. Enable password Set the plaintext enable password binary ( binary ) by 1 and 0 two methods of counting characters. Binary count is made for all information binary ( binary ) by 1 and 0 two methods of counting characters. Binary count is made for all information Floating routes ( floating routers ) are used along with dynamic routing to provide backup routes to prevent failure. One of the related AAL sublayers, which is further divided into CS and SAR sublayers. The CPCS prepares data for transmission over the ATM network, which creates a 48- byte payload cell that is sent to the ATM layer . See AAL and ATM layer . E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . Caused by simultaneous transmission of the network segment. Its appearance may exhaust the network bandwidth and cause a timeout. Target port : 23 The input is copied over the length of the medium and received by all other stations. Compare ring and star . 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. When the destination address is unknown , the switch will flood the data frame ( the target address is known , the frame will not be flooded ) Fallback (in the fall ) ATM network, this mechanism is used to get a path,ccie security v5 rack, if it can not use the regular side The demodulator demodulates the analog signal into the original digital form ( in turn, modulates the digital data it transmits into an analog signal ) . See modulation . EIGRP external routing management distance : 170 EIGRP internal routing management distance : 90 show ip eigrp neighbors to view EIGRP neighbors ! 1. Control network traffic 2. Implement packet filtering FECN: Forward Explicit Congestion Notice CCNA classroom streamlined notes Setup manually enter the setup configuration mode Cisco layered network. The distribution layer is the connection point of the access layer device. Routing is done at this level. compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant This routing algorithm group repeats the number of hops in a given route, requiring each router to send its complete updated routing table, but only to its neighbors. This routing algorithm has a tendency to generate loops, but is simpler than the link state algorithm. See link-state routing al-gorithm and SPF . edge device ( edge device ) so that the data packets can be based on the data link and network layer information in the old interfaces ( such as Ethernet and Token Ring ) and ATM devices forwarded by the interface between. The edge device does not participate in the operation of any network layer routing protocol, it only uses the route description protocol to obtain the required forwarding information.