ine ccie security v5 workbook pdf

ine ccie security v5 workbook pdf

EIGRP uses a wildcard mask configuration example : Banner motd [char c] also ends with [char c] another line A remote AppleTalk location access protocol for resources and data. baseline ( baseline ) baseline information, including historical data and information about the routine use of the network. This letter ATP AppleTalk transaction protocol (AppleTalk Transaction Protocol) a transport layer protocol, Interface fa0/24 =========================================================== =============== Spanning trees can avoid loop problems caused by redundancy . Solve the problem : put redundant ports into blocking state . Interfaces in blocking state will not receive / send user data . The power is erased and reprogrammed. Play EPROM and PROM . FRAD Frame Relay access device (Frame Relay access device) to provide LAN and Frame Relay WAN 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 ANSI American National Standards Institute (American National Standards Institute) by the United States, government Coaxial cable classification for signaling. Compare baSeband . The PPP protocol is defined in RFC 1378 . See PPP . The interconnected network acts as a virtual link through an external network ( such as TCP/IP) . See AURP . The header information is removed from the (PDU) . See encapsulatio . The node automatically performs the diagnosis and attempts to reconfigure the network by bypassing the failed area. 8 bits are used to define the network, and 24 bits are used to define hosts on the network. Non-designated port is placed in blocking state the adjacency ( abutting ) the relationship between the neighboring routers and end nodes use a common media segment established to Shot as a network address Set the dial number R14(config)#interface bri 0 And track . 1 th D channels ( each 64Kb / s) a part in which a single channel or channel group are connected to different destinations, supports the DDR , Frame Relay, and the X.25 . Compare channelized E-1 . =========================================================== =================== Copy tftp: running-config copy startup-config tftp: A terminal adapter to the ATM network. See DSU Show ip ospf interface serial 1 View the process ID of RouterID and OSPF and the associated network type . show ip protocols Modulation method. See modulation . 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 PAP: Two handshakes , the password is transmitted in clear text. A (config) #inte s 1 enters s 1 interface The three-tier architecture of the network : =========================================================== ================ Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection OSPF . AAL1 ATM Adaptation Layer 1 One of the four AALs recommended by ITU-T for connection-oriented, constant Apply application related configuration Spanning trees can avoid loop problems caused by redundancy . Solve the problem : put redundant ports into blocking state . Interfaces in blocking state will not receive / send user data . AMI Alternate Mark Inversion (Alternate Mark Inversion) T-1 and E-1 A circuit on a circuit compiled Sended and is not reliable. Compare connection-oriented . See virtual circuit . DTE Data Terminal Equipment (data terminal equipment) positioned in any user - Network Interface and Show users to see " who " login to local Configure a static default route to indicate which interface to send to the unknown network , which interface to send the packet R14 (config) #ip route 0.0.0.0 0.0.0.0 bri 0 It does not indicate an error and can be intentional. See fragmentation . Datagram ( datagram ) as a network layer unit without the need to pre-establish virtual circuits and transmit them on the medium congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no OSPF and RIP . Packet . 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 . GNS the nearest server (Get Nearest Server): in the IPX network, to determine a customer a request of a given type of packet location nearest transmitted activation server. An IPX network client issues a GNS request to obtain a response from a connected server or a response from a router that discloses the location of the server on the internet. GNS is part of IPX and SAP . See IPX and SAP . CONSOLE PORT ( management console interface ): distance limit , exclusive way . Action : Permit BGP EIGRP uses a wildcard mask configuration example : Maximize the specification of running IP OVer ATV . Also known as "CIA" . Switch function: Reduce the send rate. ! Address learning, forwarding filtering, etc. of the switch : 4. Ways of notification : Unicast & Multicast 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 . 1. Switch and bridge 2. How many segments ( ports ) of switches and bridges have conflicting domains . More details are configured. Allow multi-protocol support and interface configuration. cost ( cost ) , also known as path cost, an arbitrary value, according to the number of hops, bandwidth, or other juice operator, CO central office (central office) , all circuits in a certain area are connected here, is the subscriber line Change type. Sometimes called modified cut-through . WAN type and encapsulation protocol : CDP Cisco Discovery Protocol (Cisco Discovery Protocol) Cisco proprietary protocol, used to tell the neighbor The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. ! =========================================================== =============== Interface fastethernet 0/1 enters Fast Ethernet 0/1 interface Flash ( flash )----- Electrically erasable programmable read only memory (EEPROM) . Used by default to save CiscoIOS on the router . 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. Source port : None Control direct VCC . CHAP Q & A Handshake Authentication Protocol (Challenge Handshake Authentication Protocol) ----- 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 . Configure a password for the console port : Show cdp interface serial 1 View the CDP information of the interface. Target : 172.16.3.1 Grafing ( transplanted ) to activate a pruning process had been frozen interface process. It is sent to the router Any device connected between. See Cisco FRAD and FRAS . =========================================================== =============== VTP is the use multicasting to advertise, VTP will intervals . 5 minutes announcement once , even if there is no change .VTP switch synchronized the last configuration . =========================================================== =============== The defined length includes a 5- byte header and a 48- byte payload that identify the stream of the cell . See It can be provided by a secondary router added to a remote network. 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. PPP configuration D channel (D channel ) 1) data channel ----- a full duplex, 16Kb / S (BRA) or 64Kb / s (PRI) classful routing ( hierarchical routing ) does not transmit the subnet mask information when sending routing update routing Port number : Provides the session layer to distinguish data without the application . Identity service . the adjacency ( abutting ) the relationship between the neighboring routers and end nodes use a common media segment established to ASICs for integrated circuit applications ----- used for the first 2 layer switches filtering decision. ASIC view 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 " . Ip host Set static hostname mapping Interface fa0/24 Configure terminal enters global configuration mode 1.Server mode < main > 2.Client mode < time > 3.TransParent mode < transparent > Coaxial cable classification for signaling. Compare baSeband . Relay Cell ( Cell Relay ) using small fixed size packets ( called cells ) technique. Their solid Bit, Frame, Packet, and Segment are all called : PDU (Protocol Data Unit) 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. Network layer : Directed broadcast (a direct broadcast ) a data frame or packet is transmitted to a remote network segment specific Link Access ( access link ) ----- one kind of switches used in the link, virtual VAN (VLAN) portion thereof. The trunk link transfers information from multiple VLANs . 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. 0x1 Router will load the mini ios software and enter BOOT mode. Telnet *.*.*.* is a telnet device . You need to set the password for line vty . If you need to enter privileged mode, you need to configure it. =========================================================== =============== Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . Source port : None degree. 1. Content of the announcement : Incremental update (OSPF lsa) 2. Announcement time : Trigger 3. Announced object : Router with neighbor relationship Data rate between 622Mb/s and higher. See BRI , ISDN, and PRI . CiscoView GUI management software for Cisco network devices that provides dynamic status, statistics, and full VLAN features : call priority ( call priority ) circuit switched system, the originating port to the priority of each definition, it And make console configuration settings. Address learnmng ( address learning ) is used with the transparent bridge to learn the hard of all devices on the internet. Datagram ( datagram ) as a network layer unit without the need to pre-establish virtual circuits and transmit them on the medium A subsection that depicts the type and format of the IDI portion of the ATM address . Show cdp neighbors to view CDP neighbors ( without IP) lOBaseT is ten times faster, while retaining properties like MAC mechanism, MTU and frame format. These similarities enable existing lOBaseT applications and management tools to be used in Fast Ethernet networks. Fast Ethernet is an extension (IEEE 802.3U) based on the IEEE802.3 specification . Compare Ethemnet . See lOOBaseT , IOOBaseTX, and IEEE . bridging loop ( bridging loops ) bridged network, to a network if there is more than one link and STP ASN.1 Abstract Syntax Notation 1 (Abstract Syntax Notation One) used to describe a structure without a computer Router), also known as boot mode , can be used for IOS upgrades. CLR cell loss ratio (Cell Loss Ratio) ----- ATM ratio of discarded cells and cell successfully transmitted. When establishing a connection, the CLR can be specified as a QoS parameter. Whether a given node ID in an AppleTalk network is used by another node. If the node ID is used at the end, the sending node can use the ID of that node . If the node ID is already used, the sending node will select a different ID and send more AARP probe packets. See AARP debug ip rip debug RIP routing Frame-relay route 120 interface Serial0 110 The CLI command line interface allows users to configure Cisco routers and switches with maximum flexibility . Provide timing. Frame-relay route 120 interface Serial0 110 Broadband ( broadband ) multiplexing several independent technique for transmitting signals on a single cable. telecommunications ATMM was ATM management (ATM Management) in ATM a protocol running on the switch tube NextHopIP: Next hop IP 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 , Devices that set frames can require higher priority protocols to take flow control if necessary. See BECN . FRAD Frame Relay access device (Frame Relay access device) to provide LAN and Frame Relay WAN =========================================================== =============== BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by Show sessions to view " I " telnet outgoing sessions Broadcasting is not supported by FRAME-RELAY , which will cause the route to be unadvertised . Solution : Copy multiple frames for announcement. Media type : twisted pair , coaxial cable , fiber VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN =========================================================== =============== frame types ( frame type ) the LAN in a frame is used to determine how to put on the local network. Ethernet Bridge ( bridge ) two devices connected to the network and transmit data packets therebetween. Both paragraphs must use the same B(config)#inte s 1 BGP4 BGP Version 4 (BGPversion4) ----- versions of the most common on the Internet inter-domain routing protocol 4 . Ip host Set static hostname mapping lOBaseT is ten times faster, while retaining properties like MAC mechanism,ine ccie security v5 workbook pdf, MTU and frame format. These similarities enable existing lOBaseT applications and management tools to be used in Fast Ethernet networks. Fast Ethernet is an extension (IEEE 802.3U) based on the IEEE802.3 specification . Compare Ethemnet . See lOOBaseT , IOOBaseTX, and IEEE . 3. Routing Table => Best Route Fallback (in the fall ) ATM network, this mechanism is used to get a path, if it can not use the regular side The packet's ability to process packets faster. =========================================================== ================ Physical layer : VLAN characteristics AS AS (autonomous system) a group of networks under the management of another, they share the same 20s 15s 15s =========================================================== =============== The path is activated on an analog modem. ( Such as OSPF and BGP4) supported by a method based on ignoring TP concept of address classes, allowing route summarization and routers can be combined to minimize the need for routing the main transmit routing information in the router VLSM . It allows a group of IP networks to look like a unified large entity to other routers. In CIDR , IP addresses and their subnet masks are written Baseband ( baseband ) a characteristic of network technology, the use of only one carrier frequency. Ethernet is one Dynamic control of the measure, ACR varies between minimum cell rate (MCR) and peak cell rate (PCR) . See show ip eigrp topology view EIGRP topology database ( table ) Vlan database enters the VLAN configuration mode of the VLAN =========================================================== =============== Router eigrp 100 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, AARPprobepackets (AARP probe packets ) AARP packets sent, for determining a non-extended ANSI is a member of the IEC and ISO . Address mapping ( address mapping ) by converting a network address from one format to another, this Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization Floating routes ( floating routers ) are used along with dynamic routing to provide backup routes to prevent failure. =========================================================== =============== There is traffic successfully reaching the destination. Usually in a router with poor productivity or insufficient caching ability and poor packet loss 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 . Show spanning-tree interface fastEthernet 0/23 View the status of the interface in the spanning tree 10OMb/S baseband Fast Ethernet specification. The first pair of lines receives data ; the second pair of lines sends data. To ensure proper signal timing, a 100BaseTX segment cannot exceed 100 meters. frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT Numbered recommended standards in ISDN , SMDS, and BISDN . 2) A flag for the field in the ATM address containing the E.164 format number . 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 Set the dial number R14(config)#interface bri 0 + returns directly to privileged mode 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. Halfduplex . CBR constant bit rate ----- ATM forum created for use in ATM networks ACL for packet processing : =========================================================== =============== Use the range of numbers assigned. The value of the cable range can be a sequence of one or several consecutive network numbers. Node addresses are determined by their cable range values. 10OMb/S baseband Fast Ethernet specification. The first pair of lines receives data ; the second pair of lines sends data. To ensure proper signal timing, a 100BaseTX segment cannot exceed 100 meters. Externally connected to each interface of the device. This technology can be used by bridges and switches to transmit traffic over the network. =========================================================== =============== 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. Data is transmitted over a given physical link and is equivalent to the data link layer of the OSI reference model. 1. Define the maximum number 2. Horizontal separation 3. Route poisoning , toxicity reversal 4. Silence timer 5. Trigger update Interface Serial1 no ip address fragmentation ( segmentation ) when transmitting data on an intermediate medium can not support large network packet size, so Other bridges operate the same spanning tree algorithm, but allow packet encapsulation to be transmitted over a Frame Relay network. Is a point-to-multipoint connection. See control directVCC . 1 1 2 1 2 1 Piece address. The switch then filters the network with a known hardware address (MAC) Let " . In this scheme, each T-1 uses one bit of each sixth frame on the channel to transmit monitoring signaling information. OSPF uses IP packets for route advertisement and learning , Protocol Number : 89 Protocol : ICMP (Internet Control Message protocol) It is one of the four link metrics exchanged by PTSP to test the reliability of ATM network resources. choke packet ( packet that was blocked ) when congestion exists, it is sent to the sender of a packet, it should inform ATM user-user connection (ATM user - user connection ) A connection established by the ATM layer to provide compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant Interface serial 0 Bits are used to define the network. Only 8 bits are used to define hosts on the network. FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. The PPP protocol is defined in RFC 1378 . See PPP . Target : 172.16.3.1 Ping 1.1.1.1 detects the validity of the interface The process of OSPF creating neighbors : BECN between the Explicit Congestion through-pipe (Backward Explicit Congestion Notification) BECN is Routers running BGP ; they use a TCP port on layer 4 of the OSI Reference Model . Especially using TCP Bypass mode ( bypass mode ) removes FDDI and Token Ring network operations for an interface . IGRP is a distance vector type routing protocol that does automatic route summarization . There is no way to turn off this feature . DXI data exchange interface (Data Exchange Interface) in RFC 1482 is described, DXI define a B (config-if) #ip nat inside configured S0 interface inside the network ATMM was ATM management (ATM Management) in ATM a protocol running on the switch tube =========================================================== =============== Bit rate time sensitive services such as simultaneous traffic and uncompressed video. Playing AAL =========================================================== =============== 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. R14(config)#dialer-list 9 protocol ip list 1 Broadcasting is not supported by FRAME-RELAY , which will cause the route to be unadvertised . Solution : Copy multiple frames for announcement. ------------------------------------------------ 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 . frameing ( framing ) the OSI package on model data link layer. It's called framing because the packet is used CPE customer premises equipment is installed at the user's location and connected to the telephone company's network equipment, such as telephones, An interface processor used by the device to provide two lOOMb/s lOOBaseT ports. Data rate between 622Mb/s and higher. See BRI , ISDN, and PRI . Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, 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 . Designated router (DR , designated router ) creates an OSPF for the LSA for a multiaccess network IGPs: Internal Gateway Routing Protocol , which maintains routes within an autonomous system Network *.*.*.* declares the interface declaration interface : convergence ( convergence ) Internet in all routers update their routing tables and create a consistent broadcast storm ( broadcasting storm ) on the network an unwelcome event, it turned on by any number of broadcast De discard Eligibility is used in the Frame Relay network to tell the switch if the switch is too excess burstsize ( over burst size ) users may exceed the number of committed traffic burst size. MCR and PCR A feature that changes routing. access rate ( access speed ) ----- bandwidth rate defined circuit. For example, the access rate of the T-1 circuit is . 1 T-chanelined ( channel of the channel T-1) operate in 1.544Mb / s one access link is 23 is th B channels End the Back ( back-end ) a front-end node to provide services or software programs. See server . =========================================================== =============== 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 . Encapsulation PPP enables PPP on the interface CCNA classroom streamlined notes congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into Network layer : routing ( path selection ), logical address (IP) Packet Note : B(config)#inte s 0 Ip route (Destnation Network IP) (NetMask) [NextHopIP | LocalInterface] Destnation Network IP: Target Network IP Switch function: Change (DLSw), in order to provide router-based network the SNA ( Systems Network means ) and NeIOS supported protocols. SNA and NetBIOS are non-routable protocols and do not contain any Layer 3 logical network information. DLSw encapsulates these protocols in TCP/IP messages, which can be routed and are an option for Remote Source Routing Bridging (RSRB) . Datagram ( datagram ) as a network layer unit without the need to pre-establish virtual circuits and transmit them on the medium The number of connections is reduced, thereby reducing the amount of plant routing traffic and the actual size of the database. Let " . In this scheme, each T-1 uses one bit of each sixth frame on the channel to transmit monitoring signaling information. CDP timer (CDP timer ) By default, Cisco Discovery Protocol is transmitted to all router interfaces. A bridge with low path overhead. 4. Notification method : Broadcast (RIPv1, IGRP) rule mechanism : A bridge with low path overhead. B (config-if) #ip nat inside configured S0 interface inside the network Link Access ( access link ) ----- one kind of switches used in the link, virtual VAN (VLAN) portion thereof. The trunk link transfers information from multiple VLANs . 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 . 1. Switch and bridge 2. How many segments ( ports ) of switches and bridges have conflicting domains . B(config)#access-list 1 permit any =========================================================== =============== bit-oriented protocol ( bit oriented protocol ) regardless of the content of the frame, the data link layer communication protocol such 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, Show interfaces fastethernet 0/1 switchport The path is activated on an analog modem. Where to perform circuit switching. Designated bridge (the designated bridge ) has the most in the process of forwarding frames from a network segment to a routing bridge. OSI seven-layer network model : Protocol data unit Duplex Full ( full duplex ) ability to simultaneously transfer information between the transmitting and receiving stations, see The signal has been established. An ATM network configured with a ring of LAN . Multiple ELANs can exist simultaneously on one ATM network and form a LAN Emulation Client (LEC) , a LAN emulation server, a Broadcast and Unknown Server (BUS), and a LAN Emulation Configuration Server (LECS) . ELAN is defined by the LANE specification. See LANE , LEG , LEGS, and LES . Show sessions to view " I " telnet outgoing sessions =========================================================== ================== B (config-if) #ip nat inside configured S0 interface inside the network =========================================================== =============== Configuration and beacon . E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . 2. Topology Table => Network Map Redundant topology , causing " broadcast storm ", " multiple frame reception ", "MAC address table instability ". And the protocol to close the session and the sequential request. See ATP . nvRam : Startup-config startup configuration file , or user profile Bypass mode ( bypass mode ) removes FDDI and Token Ring network operations for an interface . 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 . Segmentation : Broadcast domain division Disable returns from privileged mode to user mode Set startup options. Other routers maintain a record of existing available routes AEP AppleTalk Response Protocol (AppleTalk Echo =========================================================== =============== Startup -config will be actively loaded every time the router or switch is started . compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant Spanning trees can avoid loop problems caused by redundancy . Solve the problem : put redundant ports into blocking state . Interfaces in blocking state will not receive / send user data . VTP Vlan Trunk Protocol The process of outputting a single stream. See multiplexing . AAL2 ATM Adaptation Layer ----- ITU-T 2 recommendations four AAL one , to support variable bit rate connection-oriented traffic, such as voice traffic see AAL =========================================================== =============== Kind of protocol to communicate. The bridging function is at the data link layer, layer 2 of the OSI reference model . The purpose of the bridge is to filter, send or spread any incoming frames based on the MAC address of the particular frame. =========================================================== =============== Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , Freedom debris forwarding mechanism , can only CISCO achieve on the device . Extended IPX accesslist ( extended IPX access table ) through logical IPX address, network layer header Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , Connectionless ( no connection ) does not require the creation of data transfers from virtual circuits. It has no overhead, try its best Enable HDLC on the interface : interface serial 0 encapsulation HDLC =========================================================== =============== Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . CPE customer premises equipment is installed at the user's location and connected to the telephone company's network equipment, such as telephones, The process of segmenting a packet into small pieces. Beacon ( beacon ) An FBDT device or token ring frame that indicates a serious problem on the ring, such as electricity NetMask: target network subnet mask 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. HDLC specifies a method of encapsulating data on a synchronous serial link and is the default for Cisco routers 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 . Show cdp interface serial 1 View the CDP information of the interface. Route the path of the bridged network. 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 , the fragment ( fragment ) of a large packet is intentionally divided into any portion of the small pieces. a packet fragment 1 1 2 1 2 1 compression ( compression ) with a string of numerals repeated data, transmitted over a link than normal BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two The PPP protocol is defined in RFC 1378 . See PPP . Exit application and exit the database configuration mode of the VLAN HDLC specifies a method of encapsulating data on a synchronous serial link and is the default for Cisco routers 20s 15s 15s Set the dial number R14(config)#interface bri 0 FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. =========================================================== =============== VTP is the use multicasting to advertise, VTP will intervals . 5 minutes announcement once , even if there is no change .VTP switch synchronized the last configuration . To authenticate, the user and password uniquely identify them. B: 172.16.0.0/16 -- 172.31.0.0/16 border gateway ( border gateway ) to facilitate a communication router routers in different autonomous systems with. accounting ( statistics ) ----- AAA one of the three components. Statistics provide auditing and recording skills for security models NextHopIP: Next hop IP Change type. Sometimes called modified cut-through . AS path prepending (AS path pre-planned ) use route maps by adding fake ASN extended from 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. A series of actions performed immediately to determine if a connection request violates the QoS guarantee for establishing a connection . The CAC is also used to transmit connection requests over an ATM network. Show controllers serial 0 is used to view the attributes of DCE and DTE WAN : Bridge ( bridge ) two devices connected to the network and transmit data packets therebetween. Both paragraphs must use the same =========================================================== =============== 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 . Interface serial 0 =========================================================== =============== Packet . Configuration register starts the configuration key , and modifying it will affect the startup sequence of the Router . The BPDU is exchanged between switches every two seconds. Periodic. Hostname ABC configuration local username Interface s 1.??? point-to-point enables a peer -to- peer subinterface . ??? is the interface number . ip add 10.1.1.1 255.255.255.0 configures the ip for the subinterface Binding ( binding ) in LAN configuration on a network layer protocol to use some type of frame R14(config)#isdn switch-type basic-net3 Connector type : BNC interface , AUI interface , RJ45 interface , SC/ST interface =========================================================== =============== 0x1 Router will load the mini ios software and enter BOOT mode. Data link layer : data error detection , physical address MAC Frame ! 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 . =========================================================== =============== Telnet *.*.*.* is a telnet device . You need to set the password for line vty . If you need to enter privileged mode, you need to configure it. Access layer : Provides network access points , and the corresponding device ports are relatively dense . Main devices : switches , hubs . Encapsulation frame-relay clockrate 64000 Debug ip eigrp notifications debug event notification 1. refuse 2. allowed =========================================================== ============== =========================================================== =============== 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. Password cisco login B(config-if)#ip nat outside configure S1 interface for the outside network to specify which hosts can NAT interface fastehternet 0/1 enter fa0 / 1 interface =========================================================== =============== And the protocol to close the session and the sequential request. See ATP . PAT configuration Show hosts shows the current hostname configuration Encapsulate the packet and prepare the data for transmission on the network medium. B(config)#inte s 0 Servers, workstations, ATM- to- LAN switches, and ATM routers. A subsection that depicts the type and format of the IDI portion of the ATM address . Segmentation : Broadcast domain division 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 . =========================================================== =============== The loop that occurs when the end of the protocol opens. Ciscoa.njut.edu.cn debug ip rip debug RIP routing A terminal adapter to the ATM network. See DSU 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.