micronics ccie security v5

micronics ccie security v5

Enable password 0x0 indicates that the router is going to enter the Rom monitor mode. Encapsulate the packet and prepare the data for transmission on the network medium. 0x1 Router will load the mini ios software and enter BOOT mode. Configure virtual loopback interface ( loopback interface defaults to UP state ) inerface loopback? Create a loopback interface B(config)#inte s 1 Advertising ( advertisement ) routing or service update is sent at a given interval, allowing on the network Configuration is consistent . EPROM erasable programmable read-only memory----- Code, during each bit cell 0 with "01" indicates, an alternating Points "11" or "00" . FIG. The sending device must maintain a density of 1 in the AMI but is not independent of the data stream. Also called the alternating mark reverse of the binary code. Control B8ZS . See ones density . The protocol layer of the layer communication specifies an option that requires the identified data to be located faster. Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . 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. 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 . Bit ( bit, bit ) A number ; a 1 or a 0 . 8 bits make up one byte. A logical collection of information. IP datagrams have become the main unit of information for the Internet. In the OSI layers reference model, the term cell (Cell) , frame (Frame) , the message (message) and the segment (segment) also define these logical information groupings. =========================================================== =============== 10Mbps 100 Congestion ( congestion ) exceeds the amount of network traffic handling capacity. The proposed circuit link. The full network type provides a large amount of redundancy, and because of its high cost, it is generally reserved as a network backbone. See DSU data service unit ---- This device is used to adapt the physical interface on the data terminal equipment (DTE) mechanism to the transmission equipment such as T-1 or E-1 and is responsible for signal timing. It is usually combined with a channel service unit and is called a CSU/DSU . See CSU . (Amplitude magnitude ) the maximum analog or digital waveform. access. Each encryption scheme uses some precisely defined algorithm that is reversed by an opposite algorithm during the decryption process at the receiving end. Scalability and improved performance and usability enhancements. DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR =========================================================== =============== 1. Router 2. Routing implementation path selection ( routing decision ). Routing Table 3. WAN access . 4. Router broadcast domain division ( interruption ). Network 192.168.1.0 0.0.0.3 broadcast address ( broadcast address ) used in addressing hardware and logical addressing. In logical addressing, the host Network 192.168.1.0 0.0.0.3 the Authorization ( authorization ) based on the AAA model of identity to allow access to a resource behavior verification. Show users to see " who " login to local B (config-if) #ip nat inside configured S0 interface inside the network Rip management distance : 120 CCNA classroom streamlined notes Enterprise network (a corporate network ) that connects a major location in a large company or organization A (config) #inte s 1 enters s 1 interface Version 2 configures the rip version to version 2 no auto-summary to turn off automatic summarization Partial mesh DNS Domain Name System (Domain Name System) is used to resolve host names to IP addresses. A(config)#key chain A configuration key chain A Network or subnet, which part represents the host. Sometimes referred to as a mask. Playing subnet mask A method is generally defined to track the network layer ( layer 3 ) address to the data link layer ( layer 2 ) address. See 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. Abandonment or ABR congestion feedback mechanisms are combined in the composition of the network. Access control list (ACL) CTD Cell Transfer Delay (Cell Transfer Delay) for ATM a given connection is used in the source 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. Enterprise network (a corporate network ) that connects a major location in a large company or organization Spanning-tree vlan 1 cost ?? Target : 172.16.3.1 Ip address 1.1.1.1 255.0.0.0 Configure the IP address of the interface Basic FRAME-RELAY configuration Connect the SDLC device to Frame Relay without the need for an existing LAN . It is also possible to upgrade to a full-featured multi-protocol router. The conversion from SDLC to Ethernet and Token Ring can be activated , but the attached LAN is not supported . See FRAD . Bit ( bit, bit ) A number ; a 1 or a 0 . 8 bits make up one byte. Used to " fused " the capabilities of various routers and switch sets . A data link product from EtherTalk Apple Computer Inc. that allows AppleTalk networks to be powered by Ethernet Ppp chap password cisco sends local password in CHAP mode discovery mode ( discoverable mode ) also called dynamic configuration, this technology is AppleTalk interface is used from 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 . Show users to see " who " login to local fault tolerance ( fault-tolerant ) network device or the communication link may fail without interrupting communications degree. Fault tolerance Frame-relay route 120 interface Serial0 110 B(config)#inte s 0 The process of outputting a single stream. See multiplexing . access rate ( access speed ) ----- bandwidth rate defined circuit. For example, the access rate of the T-1 circuit is Configure terminal enters global configuration mode Surgery. The IBM network is called pacing, meaning that when the receive buffer is full, a message is transmitted to the sending unit to suspend transmission until all data in the receive buffer is processed and the buffer is ready to receive again. 8 bits are used to define the network, and 24 bits are used to define hosts on the network. No port is activated with the no shutdown command Boot ROM ( Boot ROM) for the router in order to release the boot mode router. Then guide =========================================================== =============== The amount of time. By default, the cdp timer is 90 seconds. outside interface address is unknown , how do PAT configuration commands Source : 10.3.3.1 B (config-if) #ip nat inside configured S0 interface inside the network Broadcasting is not supported by FRAME-RELAY , which will cause the route to be unadvertised . Solution : Copy multiple frames for announcement. =========================================================== =============== Servers, workstations, ATM- to- LAN switches, and ATM routers. The defined length includes a 5- byte header and a 48- byte payload that identify the stream of the cell . See Please refer to the fourth part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection Medium, indicating the beginning and end of each character. Compare isochronous transmission . Target : 172.16.3.1 Frame Relay ( FR ) ----- the X.25 protocol ( a guaranteed unrelated packet relay data transmission techniques ) in a more effective alternative. Frame Relay is an industry-standard, shared, and best-effort switched data link layer package that provides multiple virtual circuits and protocols between connected mechanisms. =========================================================== =============== Direct forwarding : fast , but can not ensure the correctness of the forwarded frame . End exit port configuration device The power is erased and reprogrammed. Play EPROM and PROM . Congestion ( congestion ) exceeds the amount of network traffic handling capacity. Configuration with multipoint subinterface extended IP accesslist ( extended IP access list ) by logical address, the network layer protocol header word And headers and trailers for synchronization and error control, which surround the data contained in the unit. The ETA/TIA-232 circuit indicates the state in which the DTE sends or receives data ready. Transport layer : reliable and unreliable transport services , retransmission mechanism . Segment Ping 1.1.1.1 detects the validity of the interface =========================================================== =============== IGPs: Internal Gateway Routing Protocol , which maintains routes within an autonomous system =========================================================== =============== Show hosts shows the current hostname configuration Halfduplex . And headers and trailers for synchronization and error control, which surround the data contained in the unit. Enable password Set the plaintext enable password The number of connections is reduced, thereby reducing the amount of plant routing traffic and the actual size of the database. Network 192.168.1.0 0.0.0.3 =========================================================== =============== =========================================================== =============== Propagation through hubs and repeaters, but not through LAN switches, routers, or bridges. See collision . COmposite metric ( complex metrics ) with IGRP and EIGRP use with such routing protocol, B: 172.16.0.0/16 -- 172.31.0.0/16 The signal has been established. Network layer : VTP has three modes : =========================================================== =============== 10.1.1.0/255.255.255.0 Interface serial 0 R14(config)#dialer-list 9 protocol ip list 1 end-to-end VLANs ( end the VLAN) ----- across the switch fabric (switch-fabric) from end to end 10Mbps 100 ASP AppleTalk Session Protocol (APC) is established and maintained using ATP . 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 . Medium, indicating the beginning and end of each character. Compare isochronous transmission . Show spanning-tree interface fastEthernet 0/23 View the status of the interface in the spanning tree The reservoir, which can be electrically erased and reprogrammed, is physically located on the EEPROM chip. Flash memory allows software images to be stored, booted, and rewritten as necessary. By default, Cisco routers and switches use flash to save IOS . See EPROM and EEPROM . Surgery. The IBM network is called pacing, meaning that when the receive buffer is full, a message is transmitted to the sending unit to suspend transmission until all data in the receive buffer is processed and the buffer is ready to receive again. =========================================================== =============== " The main explanation is F , G , H vocabulary beginning. 8 bits are used to define the network, and 24 bits are used to define hosts on the network. Transport layer : The protocol layer of the layer communication specifies an option that requires the identified data to be located faster. Segment, even the port field in the transport layer header filters the IP address table of the network Enable password IGRP is a CISCO private routing protocol that can only be implemented and deployed on CISCO routers . 10.1.1.0/255.255.255.0 DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no Sended and is not reliable. Compare connection-oriented . See virtual circuit . 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. Aggregation layer : the convergence layer of the access point , can provide routing decisions . Realize the safety filter , the flow control . Remote access . The main device : router . Frame-relay lmi-type cisco frame-relay intf-type dce Designated bridge (the designated bridge ) has the most in the process of forwarding frames from a network segment to a routing bridge. There are two types of ACLs : Bit rate time sensitive services such as simultaneous traffic and uncompressed video. Playing AAL The reduced mode IP multicast scheme uses TGMP to transport routing datagrams between its neighbors. See IGMP . bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually, it involves one R14(config)#interface bri 0 R14(config-if)#encapsulation ppp Configure terminal enters global configuration mode The header information is removed from the (PDU) . See encapsulatio . The IGMP member report was initiated. =========================================================== =============== 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 . PAP: Two handshakes , the password is transmitted in clear text. IGPs: Internal Gateway Routing Protocol , which maintains routes within an autonomous system Password cisco sets a password to "cisco" RouterID generated ? Access control list (ACL) " The main explanation is F , G , H vocabulary beginning. BGP Ripv2 certification : FRAME-RELAY address mapping (reverse ARP) EIGRP see Enhanced IGRP . Piece address. The switch then filters the network with a known hardware address (MAC) R14(config)#interface bri 0 R14(config-if)#encapsulation ppp Connectionless link. It is mainly used to send SMDS packets on the ATM network . See AAL Bus ( bus ) through a physical path ( usually wire or copper wire ) a digital signal can be used to calculate The loop that occurs when the end of the protocol opens. 1. The content of the announcement : a copy of the routing table (copy) 2. The time of the announcement : periodicity 3. The object of the announcement : the directly connected neighbor router login set login password when Serial1 is down, Line protocol is down HDLC Advanced Data Link Control----- Use frame characters ( including checksums ) , The route to the network. Caused by simultaneous transmission of the network segment. Its appearance may exhaust the network bandwidth and cause a timeout. R14(config)#interface bri 0 R14(config-if)#encapsulation ppp =========================================================== =============== The description in the dynamic routing table is clear. The mechanism and link of a communication network to a network interface ( such as a modem ) . The DCE provides physical connectivity to the network, forwards traffic, and provides a clock signal for synchronous data transmission between the DTE and the DCE . Compare DTE . Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . Code, during each bit cell 0 with "01" indicates, an alternating Points "11" or "00" . FIG. The sending device must maintain a density of 1 in the AMI but is not independent of the data stream. Also called the alternating mark reverse of the binary code. Control B8ZS . See ones density . 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 . the fragment ( fragment ) of a large packet is intentionally divided into any portion of the small pieces. a packet fragment =========================================================== ================ VCC does not guarantee QoS, they are usually reserved for UBR and ABR connections. Compare control distribute VCC and end-to-end VLANs ( end the VLAN) ----- across the switch fabric (switch-fabric) from end to end 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 . Hide : access-list 1 deny any For broadcast frames and multicast data frames , the switch forwards flooding by default. A terminal adapter to the ATM network. See DSU Add the port to the specified VLAN bootstrap protocol ( Bootstrap Protocol ) is used to dynamically allocate IP addresses to the requesting client and gateway coprocessor Interface Serial1.1 multipoint =========================================================== =============== QoS class. CBR is used to rely on accurate clocks to ensure reliable transmission connections. Compare ABR and VBR . CTD Cell Transfer Delay (Cell Transfer Delay) for ATM a given connection is used in the source =========================================================== =============== Security : Communication with different VLANs 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. convergence ( convergence ) Internet in all routers update their routing tables and create a consistent boot sequence ( leader sequence ) define how routers boot. The configuration register tells the router where to go from Protocol): A test of connectivity between two AppleTalk nodes, where one node sends a packet to another node and receives a response or copy in response. IGRP uses composite metrics to select the best route . data circuit-terminating equipment ( data circuit terminating equipment ) the DCE is used between DTE equipment IGRP uses a 24-bit metric . BGP peers (BGP peers ) See BGP neighbors . Circuit Switching : PPP, HDLC, SLIP The power is erased and reprogrammed. Play EPROM and PROM . 3. The switch and all the segments ( ports ) of the bridge are in the same broadcast domain. Change type. Sometimes called modified cut-through . Enterprise network (a corporate network ) that connects a major location in a large company or organization Table or logical address table. B(config)#inte s 0 Used to determine the duplex mode and speed that can be used. The amount of time. By default, the cdp timer is 90 seconds. Backbone ( backbone ) basic part of the network, which provides sent to other networks and other networks originating from CIDR stepless routing domain (Classless Interdomain Routing) stepless routing protocol Ip add 10.1.1.1 255.255.255.0 Encapsulation frame-relay no shut 1OOBaseT is based on the IEEE 802.3U standard, 1OOBaseT is a baseband fast Ethernet using UTP wiring =========================================================== =============== The amount of time. By default, the cdp timer is 90 seconds. Address mapping ( address mapping ) by converting a network address from one format to another, this 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 . show flash: view flash in the IOS file Show interfaces fastethernet 0/1 switchport 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 " . 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 . bridge. The bridge ID is a combination of bridge priority and base MAC address. ASBR autonomous system boundary router (Autonomous System Boundy Router) one on cable range ( range of cables ) in the extended AppleTalk network, the existing nodes on the network so that =========================================================== =============== AS AS (autonomous system) a group of networks under the management of another, they share the same 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 . A system developed to provide network security. See the authentication . Authorization and accounting 1. Router 2. Routing implementation path selection ( routing decision ). Routing Table 3. WAN access . 4. Router broadcast domain division ( interruption ). Show users to see " who " login to local Congestion ( congestion ) exceeds the amount of network traffic handling capacity. A Cisco hierarchical network. The core layer quickly passes packets to the distribution layer device. No packet filtering is performed at this level. Cost ( cost ), also known as path cost, an arbitrary value, based on the number of hops, bandwidth, or other juices, Cisco layered network. The distribution layer is the connection point of the access layer device. Routing is done at this level. FTP file transfer protocol (File Transfer Protocol): used to transfer files between network nodes of TCP / IP Protocol : ICMP (Internet Control Message protocol) BGP speaker (BGP speakers ) advertises its routing prefix or router. login set login password when data circuit-terminating equipment ( data circuit terminating equipment ) the DCE is used between DTE equipment OSPF uses IP packets for route advertisement and learning , Protocol Number : 89 Packet . =========================================================== =============== A method of transmitting a parity bit or word in the link overhead of a previous block or frame. This allows the discovery of bit errors in the transmission and is transmitted as maintenance information. Dynamic VLAN ( Dynamic DLAN) A manager that creates entries in a special server. One of the two ATM address formats " contrast ICD . flash memory ( flash memory ) Intel developed and licensed to other A nonvolatile semiconductor memory used by the manufacturer FEIP Fast Ethernet Interface Processor (Fast Ethernet Interface Processor) Cisco7000 Series Routing Encapsulation frame-relay clockrate 64000 autonomous confederation ( Autonomous Federation ) rely mainly on their own network reachability and routing information Ripv2 certification : 1. Static NAT 2. Dynamic NAT 3. PAT =========================================================== =============== Action : Permit 1. Static NAT 2. Dynamic NAT 3. PAT connection-oriented ( connection-oriented ) to establish a virtual circuit data before any data transmission VTP Vlan Trunk Protocol Ip route 4.0.0.0 255.0.0.0 s0 1. Reduce the size of the routing table 2. Speed ​​up the convergence 3. Limit the spread of LSA 4. Improve stability Part of the original IEEE802.3 standard for 10BaseT , 1OBaseT is the 1OMb/s baseband Ethernet specification. Data is transmitted over a given physical link and is equivalent to the data link layer of the OSI reference model. congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission,micronics ccie security v5, wherein little or no Cell ( Cell ) the ATM network, the basic unit of data switching and multiplexing. The cell has a 53 byte A(config-keychain)#exit IGRP is a CISCO private routing protocol that can only be implemented and deployed on CISCO routers . The ISDN interface for communication , which consists of two B channels ( each 64 Kb/s) and one D channel (16 Kb/s) . Compare PRT . See BISDN . There is a command line interface function. =========================================================== ================ 10Mbps 100 Three forwarding modes of the switch : OSPF and RIP . When to disconnect 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 . Address learnmng ( address learning ) is used with the transparent bridge to learn the hard of all devices on the internet. Rip management distance : 120 RouterID generated ? Serial1 is administratively down, Line protocol is down And make console configuration settings. Basic Management Setup ( basic management established ) Cisco routers to establish mode. only 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 . Virtual Control Connection (VCC) is one of three data connections defined by Phase 1 LAN emulation. Because the data is direct Password cisco login DSU data service unit ---- This device is used to adapt the physical interface on the data terminal equipment (DTE) mechanism to the transmission equipment such as T-1 or E-1 and is responsible for signal timing. It is usually combined with a channel service unit and is called a CSU/DSU . See CSU . expedited delivery ( accelerated delivery ) may be the same or other layers of protocol of a different network device in can Set the dial number R14(config)#interface bri 0 Network layer : routing ( path selection ), logical address (IP) Packet Adapt to traffic or buried Bit rate time sensitive services such as simultaneous traffic and uncompressed video. Playing AAL switchport access vlan 10 Add this port to 10 VLAN in . Banner motd [char c] also ends with [char c] another line The node automatically performs the diagnosis and attempts to reconfigure the network by bypassing the failed area. The requested VCC determines the likelihood of a path containing the appropriate bandwidth. Directed broadcast (a direct broadcast ) a data frame or packet is transmitted to a remote network segment specific EIGRP and OSPF . CLP cell loss priority (Cell Loss Priority) ATM channel is determined when the header message element cell network congestion 0x1 Router will load the mini ios software and enter BOOT mode. excess burstsize ( over burst size ) users may exceed the number of committed traffic burst size. 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. RIPv1, RIPv2, IGRP, EIGRP, OSPF, ISIS No port is activated with the no shutdown command 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 . Part of the original IEEE802.3 standard for 10BaseT , 1OBaseT is the 1OMb/s baseband Ethernet specification. ATM ATM (Asynchronous Transfer Mode) by a fixed-length 53 -byte element identifier The IP address is converted to a MAC address. See RARP . =========================================================== =============== Cisco layered network. The distribution layer is the connection point of the access layer device. Routing is done at this level. Enable password Autonomous system : 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 . Protocols : TCP =========================================================== =============== =========================================================== =============== BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two Designated bridge (the designated bridge ) has the most in the process of forwarding frames from a network segment to a routing bridge. To authenticate, the user and password uniquely identify them. Exchange routing information. BPDU: Bridge Protocol Data Unit Bridge Protocol Data Unit Different frequency and phase relationships. Asynchronous transfers typically encapsulate a single character in control bits ( called start and stop bits ) coimnection ID ( connection ID) each into the router's Telnet identifying the session analysis. Show sessions 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 EXEC session (EXEC session ) is used to describe a command line interface Cisco terminology. EXEC session exists GRE Generic Routing Encapsulation (Generic Routing Encapsulation): Cisco utilizing TP a tunneling protocol to create a tunnel protocol packet encapsulated in various types of capabilities, thereby producing a virtual point to point connection, a connection across the IP network connection Go to the remote Cisco router. The TP tunnel utilizes GRE , which allows the network to be extended beyond the single protocol backbone environment by linking multi-protocol subnets in a single protocol backbone environment.