ccie security v5 lab passed

ccie security v5 lab passed

WAN type and encapsulation protocol : Please refer to the second part of the CCNA Professional English Vocabulary Collection : Classic Recommendations ; CCNA Professional English Vocabulary Collection =========================================================== =============== Dynamic NAT configuration =========================================================== =============== Asynchronous transmission ( digital transmission ) does not have a precisely timed digital signal, usually Show cdp neighbors detail View CDP neighbors ( including Layer 3 IP addresses ) show cdp entry * View CDP neighbors ( including Layer 3 IP addresses ) Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . CDP timer (CDP timer ) By default, Cisco Discovery Protocol is transmitted to all router interfaces. The area of ​​the possibility of being discarded. Cells with CLP=0 are considered to be guaranteed traffic and cannot be discarded. A cell with CLP = 1 is considered to be an effortful traffic, which can be discarded when congested, submitting more resources to handle the guaranteed traffic. Ppp chap hostname abc sends local username in CHAP mode DXI data exchange interface (Data Exchange Interface) in RFC 1482 is described, DXI define a EEPROM electrically erasable programmable read-only memory is programmed after shipment. These non-volatile memory chips can be used when needed. The client's local broadcast request is changed by unicasting the service to the server.End exit port configuration device A non-distributed backbone. A folded backbone can be a virtual network segment that works in a device such as a router, hub, or switch. 1. Static NAT 2. Dynamic NAT 3. PAT Encapsulation frame-relay clockrate 64000 . 1 T-chanelined ( channel of the channel T-1) operate in 1.544Mb / s one access link is 23 is th B channels Configuration is consistent . show flash: view flash in the IOS file B(config)#inte s 0 Create a VLAN change. The central switch does not have on-site switching capabilities. Therefore, all customer connections are returned to the CO . See CO . 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 . Owned and running network. 1. Neighbor table => all neighbors demultiplexing ( demultiplexer ) one input stream composed of a plurality of the multiplexed signal is converted back to a single Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . =========================================================== =================== Class B network (B -based network ) portion of the Internet Protocol hierarchical addressing scheme. Class B network has 16 Ip route (Destnation Network IP) (NetMask) [NextHopIP | LocalInterface] Destnation Network IP: Target Network IP congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no A(config)#key chain A configuration key chain A Let " . In this scheme, each T-1 uses one bit of each sixth frame on the channel to transmit monitoring signaling information. compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant 10.1.1.1/0.0.0.0 CIP channel interface processor (Channel Interface Processor) ----- Cisco 7000 a channel series routers use additional interface, which is connected to a host computer a control device. This device eliminates the need for an FBP connection channel. If the router does not store the loopback , select the highest IP from the physical interface as the RouterID (the interface must be active ) When configuring IGRP , you need to pay attention to the autonomous system number . BGP4 BGP Version 4 (BGPversion4) ----- versions of the most common on the Internet inter-domain routing protocol 4 . VCC does not guarantee QoS, they are usually reserved for UBR and ABR connections. Compare control distribute VCC and =========================================================== ===================== bidirectional shared tree ( bidirectional shared tree ) A method for forwarding multicast tree sharing. This method allows ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than The default route ( default route ) is used to guide the static routing table entry of the frame, and its next hop is not in CiscoView GUI management software for Cisco network devices that provides dynamic status, statistics, and full The amount of time. By default, the cdp timer is 90 seconds. Clear line * Force interrupt "telnet to local " session bridge group ( bridging group ) in a bridge configuration of the router, bridge group number determined by a unique distribution layer ( distribution layer ) the Cisco intermediate three layer hierarchical model, which contribute to the design, installation and maintenance Copy tftp: running-config copy startup-config tftp: Used to " fused " the capabilities of various routers and switch sets . WAN : ATM ATM (Asynchronous Transfer Mode) by a fixed-length 53 -byte element identifier BGP neighbors (BGP neighbor ) starts a communication process to exchange routing information dynamically two Copy tftp: running-config copy startup-config tftp: The IP address is converted to a MAC address. See RARP . Copy running-config startup-config saves the current configuration concept : CD carrier detection (cairierdetect) indicates that an interface has been activated or a modem-generated connection Holdtime CDP (CDP hold time ) routers to keep from neighboring routers received Cisco Discovery Protocol helper address ( help address ) specified unicast address, which directs Cisco router into direct excess burstsize ( over burst size ) users may exceed the number of committed traffic burst size. 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. Rate enhancement and VCT conversion. See ATM . The packet's ability to process packets faster. B(config)#ip nat pool abc 1.1.1.1 1.1.1.30 prefix-length 24 translate list 1 host IP to pool abc free IP B(config)#ip nat inside source list 1 pool abc CDP timer (CDP timer ) By default, Cisco Discovery Protocol is transmitted to all router interfaces. Add the port to the specified VLAN QoS class. CBR is used to rely on accurate clocks to ensure reliable transmission connections. Compare ABR and VBR . collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict Frame-relay interface-dlci ??? Assign a specific PVC to this subinterface . ??? is the PVC number . Link state type routing protocol: interface fastehternet 0/1 enter fa0 / 1 interface copy running-config tftp: the running-config copy to tftp the service Other bridges operate the same spanning tree algorithm, but allow packet encapsulation to be transmitted over a Frame Relay network. Interface s 1 encapsulation frame-relay Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ", " error detection ", " multi-link " through LCP . convergence ( convergence ) Internet in all routers update their routing tables and create a consistent Using private IP addresses host , you can not directly access the public network (Internet) private IP public network router will not appear in the routing table . Coaxial cable classification for signaling. Compare baSeband . Specify the idle IP of the address pool Session layer : Differentiate data from different applications . The operating system works on this layer of DATA congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no Data link layer : data error detection , physical address MAC Frame Bit, Frame, Packet, and Segment are all called : PDU (Protocol Data Unit) Which contains: BridgeID = Bridge Priority + MAC address Where to perform circuit switching. 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 . DSR modem is ready (Data Set Ready) ----- When the DCE energized and ready to run, this 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 . AARPprobepackets (AARP probe packets ) AARP packets sent, for determining a non-extended ARP ARP (Address Resolution Protocol) in RFC 826 is defined in the protocol Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , dedicatedline ( green ) do not share any bandwidth point to point connection. bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually, it involves one Broadcasting is not supported by FRAME-RELAY , which will cause the route to be unadvertised . Solution : Copy multiple frames for announcement. ISL 's main road agreement created an 802.1Q main road in 2950 Enable HDLC on the interface : interface serial 0 encapsulation HDLC buffer ( Buffer ) designed to store data processed in the transmission. Buffer for receiving / storage The bit, that is, a number cannot be divisible by 8 . Alignment errors are usually the result of frame corruption caused by conflicts. explorer packet ( probes ) of a transmission source of the token ring devices SNA packet for a source found Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . lOBaseT , Fast Ethernet, and lEEE . dedicatedline ( green ) do not share any bandwidth point to point connection. Three forwarding modes of the switch : 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 . Endpoints ( endpoint ) see BGP neighbors . Specify the idle IP of the address pool The clock frequency Serial1 is up, the line protocol is up interface is working properly. buffer ( Buffer ) designed to store data processed in the transmission. Buffer for receiving / storage The requested VCC determines the likelihood of a path containing the appropriate bandwidth. Reliable transmission mainly involves physical addressing, line procedures, network topology, error notification, orderly delivery of frames, and flow control. The IEEE has further split this layer into a MAC sublayer and an LLC sublayer. Also known as the link layer. Can be compared to the data link control layer of the SNA model. See Application layer , LLC , MAC , Network layer , Physical =========================================================== =============== Holdtime CDP (CDP hold time ) routers to keep from neighboring routers received Cisco Discovery Protocol Mesh Full ( full mesh ) network topology, wherein each node to other network nodes or virtual physical Layer Access ( Access Stratum ) ----- the Cisco three-layer hierarchical model. The access layer allows users to access the Internet. cost ( cost ) , also known as path cost, an arbitrary value, according to the number of hops, bandwidth, or other juice operator, Show cdp neighbors detail View CDP neighbors ( including Layer 3 IP addresses ) show cdp entry * View CDP neighbors ( including Layer 3 IP addresses ) 1. Add this interface to the rip process. 2. Advertise the network of this interface to other routers. The router of the DCE needs to configure the clock frequency. Network 192.168.1.4 0.0.0.3 Holdtime CDP (CDP hold time ) routers to keep from neighboring routers received Cisco Discovery Protocol DCE/DTE only exists in the WAN =========================================================== =============== bandwidth ( the bandwidth ) the spacing between the highest and lowest frequency of signals used in the network. Usually,ccie security v5 lab passed, it involves one When the destination address is unknown , the switch will flood the data frame ( the target address is known , the frame will not be flooded ) For broadcast frames and multicast data frames , the switch forwards flooding by default. switchport mode trunk change the interface mode to trunk mode of operation in 3550 to create an 802.1Q trunk road =========================================================== =============== baseline ( baseline ) baseline information, including historical data and information about the routine use of the network. This letter R14(config-if)#dialer string 016300 1. Standard Access Control List 1-99, 1300-1999 2. Extended Access Control List 100-199, 2000-2699 Port Auxiliary ( auxiliary port ) the Cisco console port on the router backplane, which allows the call routing ESF extended superframe (Extended Superframe) of 24 composed of frames, each frame of 192 bits , the first 193 than A technique for making more data. The VBR service delivers classic IP over ATM and LANE traffic. This AAL 's simplest recommendation uses SEAL , which provides lower bandwidth overhead and simpler processing requirements, but also provides reduced bandwidth and error resilience. See AAL DSAP destination point energize business (Destination Service Access Point) a network node of business FRAD Frame Relay access device (Frame Relay access device) to provide LAN and Frame Relay WAN A subsection that depicts the type and format of the IDI portion of the ATM address . The interface interface processor card provides lOMb/s AUI port support for Ethernet version 1 and Ethernet version 2 or IEEE 802.3 interface with high speed data path to other interface processors . 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 . Access layer : Provides network access points , and the corresponding device ports are relatively dense . Main devices : switches , hubs . Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ", " error detection ", " multi-link " through LCP . binary ( binary ) by 1 and 0 two methods of counting characters. Binary count is made for all information Show sessions to view " I " telnet outgoing sessions 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.