ccie security lab locations

ccie security lab locations

VTP has three modes : cofiguration register ( 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. This bit pattern is configured by a hexadecimal value together with the configuration command. Banner motd [char c] also ends with [char c] another line Table or logical address table. Configure ACL to reject london to access Denver Hostname configures the host local ID GMII dry megabits MII (Gigabit MII): providing a data transmission . 8 -bit Media Independent Interface. (DCE) , consisting of a modem. See DCE . Source : 10.3.3.1 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 Coaxial cable classification for signaling. Compare baSeband . can PPP authentication method : Flash ( flash )----- Electrically erasable programmable read only memory (EEPROM) . Used by default to save CiscoIOS on the router . Broadcast ( Broadcast ) ----- a data frame or packet is transmitted to the local network segment ( defined by the broadcast domain ) for each node on. Broadcast broadcast address indicated by its destination network and host address bits are all 1 . Also known as " local broadcast " . Compare directedbroadcast . Duplex Auto ( automatic duplex ) of a layer and 2 a device layer disposed on, it automatically switches provided ELAN emulation LAN (emulated LAN) emulates Ethernet or commands using a client / server model Abandonment or ABR congestion feedback mechanisms are combined in the composition of the network. Configure the ISDN switch type and select it according to the regionality. A data link product from EtherTalk Apple Computer Inc. that allows AppleTalk networks to be powered by Ethernet Free Fragment Forwarding (cisco private technology ): between pass-through forwarding and storage forwarding performance . switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by Show users to see " who " login to local Packet . Port Auxiliary ( auxiliary port ) the Cisco console port on the router backplane, which allows the call routing A(config-if)#ip rip authentication mode md5 ciphertext authentication Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization It enables two socket (Socket) can be reliably performed between transactions, wherein a request for another execution of a given task and to report the results. ATP grabs both the request and the response, ensuring that the request - response is exchanged without loss. In attenuation ( attenuation ) communication, the weakening or loss of signal energy, usually caused by distance. The three-tier architecture of the network : DNS is associated. See DNS . Used to " fused " the capabilities of various routers and switch sets . Cellrelay . switchport access vlan 10 Add this port to 10 VLAN in . An interface processor used by the device to provide two lOOMb/s lOOBaseT ports. E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . An incident has occurred. Can be abbreviated as ACK . Control NAK . =========================================================== =============== Change type. Sometimes called modified cut-through . In user mode and privileged mode. BGP Serial1 is administratively down, Line protocol is down Ip route 4.0.0.0 255.0.0.0 s0 The name of the Cisco Fusion Cisco Internetwork architecture on which Cisco IOS completes operations. design The metric is 32 bits long, the K values ​​are not equal , and the neighbor relationship cannot be created. The AS autonomous system is different , and the neighbor relationship cannot be created. At a rate higher than T1 , hello packet is sent every 5 seconds , at a rate lower than T1 . On , will send hello every 60s AARPprobepackets (AARP probe packets ) AARP packets sent, for determining a non-extended 1. Control network traffic 2. Implement packet filtering AURP tunnel (AURP tunnel ) connection in an AURP WAN , which is physically divided into two Part of the computer sends data to another part. Ciscoa.njut.edu.cn Network *.*.*.* declares the interface declaration interface : 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 ) . 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 . Backbone ( backbone ) basic part of the network, which provides sent to other networks and other networks originating from Link state type routing protocol: =========================================================== =================== DSAP destination point energize business (Destination Service Access Point) a network node of business Connector type : BNC interface ,ccie security lab locations, AUI interface , RJ45 interface , SC/ST interface 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. CHAP Q & A Handshake Authentication Protocol (Challenge Handshake Authentication Protocol) ----- cell payload scrambling ( cell payload scrambling ) the ATM switches and certain of the edges speed relay Code IP over ATN equipment. ----- s1 RA s0 >-------- s1 RB s0 --------- s1 RC s0 ------ 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 . There are two types of ACLs : And make console configuration settings. A data link product from EtherTalk Apple Computer Inc. that allows AppleTalk networks to be powered by Ethernet Non-designated port is placed in blocking state 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 . Part of the computer sends data to another part. =========================================================== =================== 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. Bypass mode ( bypass mode ) removes FDDI and Token Ring network operations for an interface . Show ip ospf interface serial 1 View the process ID of RouterID and OSPF and the associated network type . show ip protocols Adopt standard : switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road OSI seven-layer network model : Protocol data unit The packet's ability to process packets faster. The header information is removed from the (PDU) . See encapsulatio . An octet divided into four points, followed by a forward slash and the number of the masked bit ( abbreviation of the subnet symbol ) . See ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than Network view, the process required to use the best possible path. No user data passed during convergence. Righteousness. Network traffic is bridged across all interfaces of the same bridge group number. vlan 10 name cisco create a named CISCO 's 10 Hao VLAN vlan 20 create a system of self-named 20 Hao VLAN Configuration is consistent . Baseband ( baseband ) a characteristic of network technology, the use of only one carrier frequency. Ethernet is one Interface s 1 no ip add Rate enhancement and VCT conversion. See ATM . The process of packaging or inclusion. In the OSI reference model, when data flows down the protocol stack, each layer encapsulates its next layer. The loop that occurs when the end of the protocol opens. Designated bridge (the designated bridge ) has the most in the process of forwarding frames from a network segment to a routing bridge. FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. End directly returns to privileged mode Show sessions show the current outgoing TELNET session 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 recognized serial interface processor that provides four or eight high-speed serial interfaces. autonomous confederation ( Autonomous Federation ) rely mainly on their own network reachability and routing information 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 Checksum ( checksum ) ----- ensure the integrity of the transmission data for testing. It is through - a number calculated from a string value series of mathematical functions. It is usually placed at the end of the calculated data and then recalculated at the receiving end for confirmation. Compare CRC . Binding ( binding ) in LAN configuration on a network layer protocol to use some type of frame DLSw Data Link Switching (Data Link Switching) IBM in 1992 Exploitation AC data link Session layer : Differentiate data from different applications . The operating system works on this layer of DATA R14(config-if)#dialer-group 9 Link state type routing protocol: An interface processor used by the device to provide two lOOMb/s lOOBaseT ports. frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. BDR backup designated router (Backup Designated Router) an OSPF network used to prepare Set of special character data link communication protocols. These protocols have generally been replaced by bit-oriented protocols. Compare the bit-oriented protocol . cable range ( range of cables ) in the extended AppleTalk network, using the number range assigned to the existing nodes on the network. 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.