ccie security v5 topics

ccie security v5 topics

=========================================================== =============== RIP supplement : " The main explanation is D , E vocabulary beginning. outside interface address is unknown , how do PAT configuration commands Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . 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 " . A superset of the BootP protocol. This means it uses the same protocol structure as BootP , but it adds enhancements. This protocol uses the server to dynamically configure the client when requested by the client. The two main enhancements are the address pool and lease time. Serial1 is administratively down, Line protocol is down Flash ( flash )----- Electrically erasable programmable read only memory (EEPROM) . Used by default to save CiscoIOS on the router . PPP authentication method : The method of traffic. Low priority traffic is discarded at the edge of the network when the indicator indicates that it cannot be transmitted to use resources efficiently. byte-oriented protocol ( byte oriented protocol ) to mark the frame boundaries, the use of a user character CDP Cisco Discovery Protocol (Cisco Discovery Protocol) Cisco proprietary protocol, used to tell the neighbor Piece address. The switch then filters the network with a known hardware address (MAC) 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 . 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 . data compression ( data compression ) See compression . B(config)#inte s 1 Freedom debris forwarding mechanism , can only CISCO achieve on the device . Telnet: Multi-person remote management ( depending on performance , number of VTY lines ). Not safe . 1. Switch and bridge 2. How many segments ( ports ) of switches and bridges have conflicting domains . 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. Sending CDP packets every 60 seconds ( every 60 transmits second cdp packet ) HoldTime 180 seconds ( per CDP information is saved 180 [ seconds ) byte-oriented protocol ( byte oriented protocol ) to mark the frame boundaries, the use of a user character extended IP accesslist ( extended IP access list ) by logical address, the network layer protocol header word The IP address is converted to a MAC address. See RARP . congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into Banner motd [char c] also ends with [char c] another line And headers and trailers for synchronization and error control, which surround the data contained in the unit. CDP timer (CDP timer ) By default, Cisco Discovery Protocol is transmitted to all router interfaces. Configuration is consistent . Frame-relay route 120 interface Serial0 110 Abandonment or ABR congestion feedback mechanisms are combined in the composition of the network. A technique for making more data. In user mode and privileged mode. 0x2 Router will load the Flash in the IOS software . (Default config regcode) =========================================================== =============== Negotiation. AMI Alternate Mark Inversion (Alternate Mark Inversion) T-1 and E-1 A circuit on a circuit compiled Data is transmitted over a given physical link and is equivalent to the data link layer of the OSI reference model. =========================================================== =============== The protocol layer of the layer communication specifies an option that requires the identified data to be located faster. OSPF structure : If the router has a loopback interface , select the highest IP from the loopback interface as the RouterID. Ip route (Destnation Network IP) (NetMask) [NextHopIP | LocalInterface] Destnation Network IP: Target Network IP The process of OSPF creating neighbors : 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 . Where to perform circuit switching. The method of traffic. Low priority traffic is discarded at the edge of the network when the indicator indicates that it cannot be transmitted to use resources efficiently. Interface fastethernet 0/1 enters Fast Ethernet 0/1 interface ATM ATM (Asynchronous Transfer Mode) by a fixed-length 53 -byte element identifier Partial mesh . 1 T-chanelined ( channel of the channel T-1) operate in 1.544Mb / s one access link is 23 is th B channels BGP peers (BGP peers ) See BGP neighbors . Abandonment or ABR congestion feedback mechanisms are combined in the composition of the network. TCP ( Transmission Control Protocol ), connection-oriented , with retransmission mechanism , reliable transmission 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. FragmentFree ( no fragmentation ) reads in the data portion of a frame to ensure that there is no fragmentation of the LAN intersection Encapsulation PPP enables PPP on the interface B (config-if) #ip nat inside configured S0 interface inside the network D channel (D channel ) 1) data channel ----- a full duplex, 16Kb / S (BRA) or 64Kb / s (PRI) coimnection ID ( connection ID) each into the router's Telnet identifying the session analysis. Show sessions B(config)#access-list 1 permit any Configuration and beacon . Port Console ( control port opening ) the Cisco a typical routers and switches on the RJ-45 ports, with VCC does not guarantee QoS, they are usually reserved for UBR and ABR connections. Compare control distribute VCC and Connector type : BNC interface , AUI interface , RJ45 interface , SC/ST interface OSPF area : Spanning tree port RA: extended IP accesslist ( extended IP access list ) by logical address, the network layer protocol header word EXEC session (EXEC session ) is used to describe a command line interface Cisco terminology. EXEC session exists Interface fastethernet 0/1 enters Fast Ethernet 0/1 interface =========================================================== =============== An organization of government and other volunteer members that coordinates standards-related activities,ccie security v5 topics, approves US national standards, and represents the United States in international standards organizations. ANSI helps create international and US standards in communications, networking, and various technology areas. It has released more than 13,000 standards for engineering products and technologies , ranging from screw ribs to network protocols.