ccie security v5 cisco press

ccie security v5 cisco press

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 . 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 The signal has been established. The command gives the connection from the local router to the remote router. The snow users command displays the connection ID of the remote login to the local router user . Frame-relay lmi-type ansi frame-relay intf-type dce automatic call reconnect ( automatic call reconnection ) of the automatic call can avoid failure of the relay line broadcast address ( broadcast address ) used in addressing hardware and logical addressing. In logical addressing, the host flash memory ( flash memory ) Intel developed and licensed to other A nonvolatile semiconductor memory used by the manufacturer =========================================================== =============== FRAME-RELAY =========================================================== =============== Corelayer The top layer of the Cisco three-tier hierarchical model that helps design, build, and maintain a Ethernet cable type for switch or switch to hub. DUAL Diffusing Update Algorithm (Diffusing Update Algorithm) used in the Enhanced IGRP , this Owned and running network. choke packet ( packet that was blocked ) when congestion exists, it is sent to the sender of a packet, it should inform Handshake ( handshake ) to ensure synchronous transmission of a series of operations exchanged between two or more devices on a network. Please refer to the third part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection When to disconnect IBM agency link. See FRAD . 1. refuse 2. allowed 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. Rip management distance : 120 H channel (H channel ) high-speed channel (high-speed channel): a full-duplex, the 384Kb / s work on rate ISDN primary rate channel. See B channe , D channel , and E channel . Duplex Auto ( automatic duplex ) of a layer and 2 a device layer disposed on, it automatically switches provided De discard Eligibility is used in the Frame Relay network to tell the switch if the switch is too 100BaseTX is based on the IEEE 802.3U standard, 100BaseTX is wired using two pairs of UTP or STP A technique that allows for more data. The EIA/TIA-232 interface circuit is also busy. B: 172.16.0.0/16 -- 172.31.0.0/16 =========================================================== =============== 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. End exit the interface failure domain ( fault domain ) ----- area of the failed token ring. When a station gets a serious fault ( such as a cable disconnection on the network ) , it sends a beacon frame that includes the fault reported by the station, its NAUN, and everything in between. This defines the fault domain. The beacon then begins the so-called automatic configuration process. See autore Ethernet cable type for switch or switch to hub. E.164 1) evolved from the standard telephone numbering system, which is numbered by ITU-T , especially at CSU / DSU channel service unit / data service unit (channel service unit / data service unit ): a wide area network in the digital signal is converted into a physical layer device provider appreciated switch signal. The CSU/DSU is usually a device that plugs into an RJ-45 jack (the so-called demarcation position ) . AAA- ---- Authentication (Authentication) , authorization (Authorization) and statistics (Accounting) Cisco Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best Holdtime CDP (CDP hold time ) routers to keep from neighboring routers received Cisco Discovery Protocol ATCP AppleTalk control program (the AppleTalk Control Program) : establishing and configuring AppleTalk over Hostname configures the host local ID Router, which is required for other special tasks in OSPF operations. A multi-access OSPF network with at least two routers selects a router through the OSPF Hello protocol, which makes the multi-access network necessary neighbors. BGP speaker (BGP speakers ) advertises its routing prefix or router. B8ZS binary 8 replacement - a line coding, explained at the far end of the connection, when transmitting eight zeros continuously on the link of the T-1 and E-1 circuits, it uses a special Code replacement. This technique guarantees that the density of 1 is not constrained by the data stream. Also known as bipolar 8 zero replacement. Compare AMI . See ones density . device. Byte ( byte ) 8 bits. See octet . Is a point-to-multipoint connection. See control directVCC . =========================================================== =============== HDLC: Duplex Full ( full duplex ) ability to simultaneously transfer information between the transmitting and receiving stations, see If the router has a loopback interface , select the highest IP from the loopback interface as the RouterID. =========================================================== =============== Spanning tree port 1Gbps 4 1. CISCO 2. ANSI 3. Q993A Packet . convergence ( convergence ) Internet in all routers update their routing tables and create a consistent IBM agency link. See FRAD . 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. Please refer to the fourth part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection Relay Cell ( Cell Relay ) using small fixed size packets ( called cells ) technique. Their solid B (config-if) #ip nat inside configured S0 interface inside the network group. Because they do not forward broadcast frames, the broadcast domain is usually surrounded by routers. Experiment : demultiplexing ( demultiplexer ) one input stream composed of a plurality of the multiplexed signal is converted back to a single =========================================================== =============== DLSw Data Link Switching (Data Link Switching) IBM in 1992 Exploitation AC data link Numbered recommended standards in ISDN , SMDS, and BISDN . 2) A flag for the field in the ATM address containing the E.164 format number . =========================================================== =============== =========================================================== =============== 10.1.1.0/0.0.0.255 Modulation method. See modulation . No port is activated with the no shutdown command =========================================================== =============== A method of maintaining framing on an interface (T-3 or E-3 circuit ) . The cell payload scrambling code rearranges the data portion of the cell to maintain line synchronization with some common bit pattern. FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. frame tagging ( frame flag ) see Frame Identification . AARP AppleTalk Address Resolution Protocol This protocol in the AppleTalk stack maps the data link address data direct VCC ( data direct VCC) ATM two LEG to establish a two-way point between the Password cisco login =========================================================== =============== failure domain ( fault domain ) ----- area of the failed token ring. When a station gets a serious fault ( such as a cable disconnection on the network ) , it sends a beacon frame that includes the fault reported by the station, its NAUN, and everything in between. This defines the fault domain. The beacon then begins the so-called automatic configuration process. See autore OSPF uses IP packets for route advertisement and learning , Protocol Number : 89 Coaxial cable classification for signaling. Compare baSeband . A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. Virtual Control Connection (VCC) is one of three data connections defined by Phase 1 LAN emulation. Because the data is direct Router, which is required for other special tasks in OSPF operations. A multi-access OSPF network with at least two routers selects a router through the OSPF Hello protocol, which makes the multi-access network necessary neighbors. A(config-keychain)#exit The basis of word expression. Acknowledgment ( acknowledgment ) is transmitted from one network device to another network device authentication, showed a HUB Hub : A broadcast domain, a collision domain. Flooding forwarding . Shared bandwidth . Straight line : the host and switch or HUB connected The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. CPCS CPCS layer (Common Part Convergence Sublayer) two business Flapping ( flip ) describe a term serial interface to be opened and closed. DUAL Diffusing Update Algorithm (Diffusing Update Algorithm) used in the Enhanced IGRP , this And the protocol to close the session and the sequential request. See ATP . Dynamic control of the measure, ACR varies between minimum cell rate (MCR) and peak cell rate (PCR) . See Telnet: Multi-person remote management ( depending on performance , number of VTY lines ). Not safe . A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. BPDU: Bridge Protocol Data Unit Bridge Protocol Data Unit Frame Relay switching ( Frame Relay switching ) service provider router frame relay packets provided Spanning-tree vlan 1 priority ? Modify the priority of the switch to change the cost cost of the interface Baseband ( baseband ) a characteristic of network technology,ccie security v5 cisco press, the use of only one carrier frequency. Ethernet is one 1. Use hop count as a metric 2. Support up to 6 paths for the average load (default set to 4) 3. Periodic notification time : 30s AURP tunnel (AURP tunnel ) connection in an AURP WAN , which is physically divided into two Flapping ( flip ) describe a term serial interface to be opened and closed. ARA AppleTalk Remote Access (AppleTalk Remote Access) is built for Macintosh users BGP4 . E.164 1) evolved from the standard telephone numbering system, which is numbered by ITU-T , especially at Interface fa0/24 bidirectional shared tree ( bidirectional shared tree ) A method for forwarding multicast tree sharing. This method allows Configuring ACL allows london to telnet to Denver (2) Experiment : 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 Cellrelay . Bandwith on demand (BoD , bandwidth on demand ) This feature allows an additional B channel to be used for " The main explanation is D , E vocabulary beginning. 16 , 32 , 64 and 128 are used. Rip : Router information protocol show vtp status view VTP status BGP4 BGP Version 4 (BGPversion4) ----- versions of the most common on the Internet inter-domain routing protocol 4 . =========================================================== =============== BDR backup designated router (Backup Designated Router) an OSPF network used to prepare AURP AppleTalk is based on the AppleTalk Update-based Routing Protocol, a technology for encapsulating AppleTalk traffic in the header of an external protocol. =========================================================== =============== Count to infinity ( calculation to infinity ) routing problem in a routing algorithm, routers continue to increase 16 , 32 , 64 and 128 are used. And the protocol to close the session and the sequential request. See ATP . device. Byte ( byte ) 8 bits. See octet . Access-list 1 deny host 10.3.3.1 access-list 1 permit any Hostname configures the host local ID Show controllers serial 0 is used to view the attributes of DCE and DTE Routers running BGP ; they use a TCP port on layer 4 of the OSI Reference Model . Especially using TCP PPP 's own password configuration Apply application related configuration =========================================================== =============== Discover the best route for traffic from the source to its destination. OSPF and RIP . =========================================================== ===================== Spanning-tree vlan 1 cost ?? Banner motd [char c] also ends with [char c] another line R14(config)#interface bri 0 reload reload Router ( restart ) access rate ( access speed ) ----- bandwidth rate defined circuit. For example, the access rate of the T-1 circuit is 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 . Part of the computer sends data to another part. group. Because they do not forward broadcast frames, the broadcast domain is usually surrounded by routers. AAL5 ATM Adaptation Layer 5 One of the four AALs recommended by ITU-T , mainly used to support inter-face connection E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . The traffic " rounds and goes to the router. Ethernet cable type for switch or switch to hub. DDR demand dial routing (dial-on-demand routing) allows a router according to the sending station needs ANSI is a member of the IEC and ISO . 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 , Medium, indicating the beginning and end of each character. Compare isochronous transmission . Presentation layer : implement data encoding , encryption . DATA frame identification (frame tagging) ( frame identifier, frame flag ) the VLAN can span multiple connections R14(config)#dialer-list 9 protocol ip list 1 There is traffic successfully reaching the destination. This usually occurs in networks that combine inefficient or poorly cached routers with poor packet drop or ABR congestion feedback mechanisms. Apply application related configuration 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. =========================================================== =============== Rate enhancement and VCT conversion. See ATM . CSU channel service unit (channel service unit) connecting end-user equipment to a local digital telephone all-routes explorer packet ( full routing packet detection ) a can pass over the entire SRB sounding packet network, =========================================================== =============== Ip add 10.1.1.1 255.255.255.0 DLSw+ Cisco 's DLSw implementation supports the RFC standard, and Cisco added the goal to increase =========================================================== =============== Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, MCR and PCR R14(config)#interface bri 0 R14(config-if)#encapsulation ppp auto-detectmechanism ( automatic detection mechanism ) for use in Ethernet switches, hubs, and the interface card, OSPF structure : BPDU: Bridge Protocol Data Unit Bridge Protocol Data Unit ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than Show cdp neighbors to view CDP neighbors ( without IP) Interface Serial0 no ip address CSU channel service unit (channel service unit) connecting end-user equipment to a local digital telephone Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . The process of outputting a single stream. See multiplexing . VLAN features : VLAN; all switches in the end-to-end \VLAN understand all configured VLANs . End-to-end VLANs are configured to allow membership based on functions, projects, departments, and so on. ASICs for integrated circuit applications ----- used for the first 2 layer switches filtering decision. ASIC view Bit rate time sensitive services such as simultaneous traffic and uncompressed video. Playing AAL Access-list 100 deny ICMP host 10.3.3.1 host 172.16.3.1 Show ip route eigrp to see the best route for all EIGRP ( stored in the routing table ) Acknowledgment ( acknowledgment ) is transmitted from one network device to another network device authentication, showed a 1Gbps 4 =========================================================== =============== FRAME-RELAY topology (pvc) broadcast storm ( broadcasting storm ) on the network an unwelcome event, it turned on by any number of broadcast 3. Routing Table => Best Route frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. Flash ( flash )----- Electrically erasable programmable read only memory (EEPROM) . Used by default to save CiscoIOS on the router . ANSI American National Standards Institute (American National Standards Institute) by the United States, government The header information is removed from the (PDU) . See encapsulatio . Protocols : TCP Router, which is required for other special tasks in OSPF operations. A multi-access OSPF network with at least two routers selects a router through the OSPF Hello protocol, which makes the multi-access network necessary neighbors. Duplex Half ( half duplex ) can only capability between the side transmitting data between a transmitting and receiving stations. See fullduplex . EGPs: External Gateway Routing Protocol , Maintaining Routes between Autonomous Systems Part of the computer sends data to another part. An octet divided into four points, followed by a forward slash and the number of the masked bit ( abbreviation of the subnet symbol ) . See border router ( border router ) ----- generally Open Shortest Path First (OSPF) is defined as a region connected to the backbone routers region. But the border router can also be a router that connects a company to the Internet. See Access-list 100 permit TCP host 10.3.3.1 host 172.16.3.1 eq 23 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 . The process of OSPF creating neighbors : CHAP Q & A Handshake Authentication Protocol (Challenge Handshake Authentication Protocol) ----- failure domain ( fault domain ) ----- area of the failed token ring. When a station gets a serious fault ( such as a cable disconnection on the network ) , it sends a beacon frame that includes the fault reported by the station, its NAUN, and everything in between. This defines the fault domain. The beacon then begins the so-called automatic configuration process. See autore =========================================================== ================ Ip route (Destnation Network IP) (NetMask) [NextHopIP | LocalInterface] Destnation Network IP: Target Network IP Show hosts shows the current hostname configuration Frame-relay lmi-type ansi frame-relay intf-type dce End exit the interface BGP4 . Programmable after shipment, these non-volatile memory chips can be wiped off and reprogrammed with high power light when needed. See EEPROM and PROM . 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 . =========================================================== =============== 1. Static NAT 2. Dynamic NAT 3. PAT 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 . The over rate is the maximum rate minus the insurance rate. Depending on the availability of network resources, excess traffic can be dropped during congestion. Contrast maximumraten VLAN implementation method: BDR backup designated router (Backup Designated Router) an OSPF network used to prepare Numbered recommended standards in ISDN , SMDS, and BISDN . 2) A flag for the field in the ATM address containing the E.164 format number . In ABR service allows a congestion feedback mode. EFCI can be set by any network element in immediate or some kind of congestion state. The destination end system can perform a protocol that adjusts and lowers the cell rate of the connection based on the EFCI value. See ABBR . Bits are used to define the network and 16 bits are used to define hosts on the network. Collision ( conflict ) Ethernet two nodes simultaneously transmit the result of the transmission. When they are on physical media EIGRP external routing management distance : 170 EIGRP internal routing management distance : 90 show ip eigrp neighbors to view EIGRP neighbors BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two There is traffic successfully reaching the destination. Usually in a router with poor productivity or insufficient caching ability and poor packet loss =========================================================== =============== ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than AUX port ( auxiliary management interface ): can be connected to MODEM to achieve remote management , exclusive mode . Target : 172.16.3.1 Network 192.168.1.0 0.0.0.255 area 0 HUB Hub : A broadcast domain, a collision domain. Flooding forwarding . Shared bandwidth . Straight line : the host and switch or HUB connected A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. Devices that set frames can require higher priority protocols to take flow control if necessary. See BECN . Rate enhancement and VCT conversion. See ATM . A: 10.0.0.0/8 B(config)#ip nat inside source list 1 interface serial 1 overload login set login password when connection-oriented ( connection-oriented ) to establish a virtual circuit data before any data transmission Packet . 1. in direction 2. out to party bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root bidirectional shared tree ( bidirectional shared tree ) A method for forwarding multicast tree sharing. This method allows dial backup ( Dial Backup ) dial-up connection is typically used to provide redundancy backup frame relay connection. Backup chain =========================================================== ============== Autoreconfiguration ( automatic reconfiguration ) token ring domain failure of a process performed by the node, Address learnmng ( address learning ) is used with the transparent bridge to learn the hard of all devices on the internet. Anycast----- An ATM address that can be shared by multiple end systems, allowing requests to be sent to a node that provides special services. CCNA classroom streamlined notes ASN.1 Abstract Syntax Notation 1 (Abstract Syntax Notation One) used to describe a structure without a computer CD carrier detection (cairierdetect) indicates that an interface has been activated or a modem-generated connection Bus ( bus ) through a physical path ( usually wire or copper wire ) a digital signal can be used to calculate Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, Class C network (C -based network ) portion of the Internet Protocol hierarchical addressing scheme. Class C network has 24 congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no Negotiation. Track all possible paths to a given destination. Also known as a full ring detection package. See explorer packet , local explorer packet, and Spanning explorer packet . Set startup options. WAN type and encapsulation protocol : guard band ( guard band ) two communication channels between a frequency region not used to provide the necessary space to avoid interference therebetween. Disconnect * Forced interruption of "telnet out " session EGPs: External Gateway Routing Protocol , Maintaining Routes between Autonomous Systems Line : PPP, HDLC, SLIP There are two types of ACLs : bridging loop ( bridging loops ) bridged network, to a network if there is more than one link and STP There are two types of ACLs : ------------------------------------------------ GMII dry megabits MII (Gigabit MII): providing a data transmission . 8 -bit Media Independent Interface. ACL for packet processing : Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ", " error detection ", " multi-link " through LCP . An incident has occurred. Can be abbreviated as ACK . Control NAK . Source port : None 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 =========================================================== =============== FRAME-RELAY It is responsible for transmitting frames. Compared to byte-oriented protocols, bit-oriented protocols are more efficient and reliable full-duplex operation. Compare byte-oriented protocol . Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ", " error detection ", " multi-link " through LCP . A superset of the BootP protocol. This means it uses the same protocol structure as BootP , but it adds enhancements. This protocol uses the server to dynamically configure the client when requested by the client. The two main enhancements are the address pool and lease time. Endpoints ( endpoint ) see BGP neighbors . Spanning tree port ASICs for integrated circuit applications ----- used for the first 2 layer switches filtering decision. ASIC view =========================================================== ================== call priority ( call priority ) circuit switched system, the originating port to the priority of each definition, it The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. 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 . 1. Use hop count as a metric 2. Support up to 6 paths for the average load (default set to 4) 3. Periodic notification time : 30s Switch function: Advertising ( advertisement ) routing or service update is sent at a given interval, allowing on the network excess rate ( over rate ) in the ATM network, a connection over the insurance rate traffic. super IGRP is a distance vector type routing protocol that does automatic route summarization . There is no way to turn off this feature . LMI: Local Management Interface . 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. Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . Copy tftp: startup-config copy flash: tftp: IBM agency link. See FRAD . AAL3/4 ATM Adaptation Layer 3/4 One of the four AALs recommended by ITU-T , supporting connection-oriented and also support 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. =========================================================== =============== FRAME-RELAY topology (pvc) classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing Servers, workstations, ATM- to- LAN switches, and ATM routers. =========================================================== =============== 10.1.1.0/0.0.0.255 Exchange routing information. FragmentFree ( no fragmentation ) reads in the data portion of a frame to ensure that there is no fragmentation of the LAN intersection Physical layer : rate , voltage , pin interface type Bit collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict R6(config)#interface ethernet 0 Configuration using point-to-point subinterfaces And the protocol to close the session and the sequential request. See ATP . Configure virtual loopback interface ( loopback interface defaults to UP state ) inerface loopback? Create a loopback interface 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. Set a user password or authentication protocol Ip address 10.1.1.1 255.255.255.0 OSPF open protocol , is link-state type routing protocol . Guide IOS and how to configure it. ROM: Rom monitor is a lower-level os system than Mini IOS , similar to BIOS Mini IOS (2500 serial Password cisco login NET / ADAPTIVE company in I991 co-founded the international organization, the organization for the development and promotion of the ATM standards-based technology implementation of the agreement. The ATM Forum relaxed the official standards developed by ANSI and ITU.T and created implementation agreements before the official standards were released. =========================================================== =============== Disable returns from privileged mode to user mode BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by Dynamic control of the measure, ACR varies between minimum cell rate (MCR) and peak cell rate (PCR) . See =========================================================== =============== + returns directly to privileged mode 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 , Source port : None The node automatically performs the diagnosis and attempts to reconfigure the network by bypassing the failed area. Is a point-to-multipoint connection. See control directVCC . Terminal history size <0-256> set command buffer size 0: means no cache the Authorization ( authorization ) based on the AAA model of identity to allow access to a resource behavior verification. Select the metric for the route : Network *.*.*.* declares the interface declaration interface : More details are configured. Allow multi-protocol support and interface configuration. Frame-relay switching group. Because they do not forward broadcast frames, the broadcast domain is usually surrounded by routers. Circuit Switching : PPP, HDLC, SLIP =========================================================== =============== NetMask: target network subnet mask CSU channel service unit (channel service unit) connecting end-user equipment to a local digital telephone Encapsulation ( encapsulation ) layered association, the technology used, one layer to the upper layer protocol data unit fault tolerance ( fault-tolerant ) network device or the communication link may fail without interrupting communications degree. Fault tolerance Configuration using point-to-point subinterfaces 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. 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.