cisco ccie security v5 study guide

cisco ccie security v5 study guide

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. =========================================================== =============== The convergence algorithm provides loop-free operation throughout the routing calculation. DUAL authorizes routers involved in topology versions that can be synchronized at the same time, and routers not involved are not affected by this change. See Enhanced IGRP . If the router has a loopback interface , select the highest IP from the loopback interface as the RouterID. Port Auxiliary ( auxiliary port ) the Cisco console port on the router backplane, which allows the call routing Routing methods. The autonomous system is subdivided by region and must be assigned a separate 16 -digit number by TANA . See area . R14#debug isdn events R14#show isdn active Management distance: Determine which routing protocol generates routes will be adopted by the router. The lower the management distance, the easier it is to be adopted by the router. 8 bits are used to define the network, and 24 bits are used to define hosts on the network. 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 congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into Demodulation ( demodulating ) a modulated channel port returns to its original form of a series of steps. Modulation when receiving 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. Source : 10.3.3.1 FragmentFree ( no fragmentation ) reads in the data portion of a frame to ensure that there is no fragmentation of the LAN intersection =========================================================== =============== User Network Interface (UNI) The time between a cell exit event and the corresponding cell entry event at the destination. Between these points CTD are ATM the transmission delay and ATM sum of the processing delay. Access-list 100 permit IP any any ASBR autonomous system boundary router (Autonomous System Boundy Router) one on Routing methods. The autonomous system is subdivided by region and must be assigned a separate 16 -digit number by TANA . See area . Terminal history size <0-256> set command buffer size 0: means no cache Provide sufficient management and configuration to get the router working so that someone can remotely log in to the router and configure it. 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 . The line is damaged , the interface does not have any connection cable. Serial1 is up, line protocol is down 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. 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 packet's ability to process packets faster. The sessions 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 . ABR area border router ----- located in one or more OSPF area boundary OSPF routers, ABR is used to OSPF connection region to the OSPF backbone area Interface s 1 no ip add Configuration register starts the configuration key , and modifying it will affect the startup sequence of the Router . (PDU) Add header information. For example, in Internet terminology. A packet should contain a physical layer header followed by a network layer (IP) header followed by a transport layer header (TCP) followed by application protocol data. congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no between. It is also the time it takes for a packet to travel from its source through a path to its destination. See latency . Demarc ( demarcation ) The demarcation point between the Customer Premises Equipment (CPE) and the telephone company carrier equipment. =========================================================== =========== =========================================================== =============== Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . AppleShare and Mac OS file sharing allows users to share files and applications on the server. CO central office (central office) , all circuits in a certain area are connected here, is the subscriber line The distance limit of each segment of 1OBaseT is about 100 meters. See Ethernet and IEEE 802.3 . A remote AppleTalk location access protocol for resources and data. Basic FRAME-RELAY configuration Crankback (in case of busy return ) In ATM , when a node cannot accept a connection somewhere on the selected path compression ( compression ) with a string of numerals repeated data, transmitted over a link than the normal grant There is a command line interface function. =========================================================== =============== algorithm ( algorithm ) to a set of rules or procedures to solve a problem. Algorithms in the network are generally used =========================================================== ================ IGRP uses composite metrics to select the best route . Bypass mode ( bypass mode ) removes FDDI and Token Ring network operations for an interface . Frame-relay route 110 interface Serial1 120 Target : 172.16.3.1 data circuit-terminating equipment ( data circuit terminating equipment ) the DCE is used between DTE equipment 1. Bandwidth 2. Delay 3. Reliability 4. Load 5. MTU ACR allows the Cell Rate ATM Forum to be a name defined for managing ATM traffic. Congestion control A random value selected by the BGP router when sending an OPEN message. Topology Bus ( bus topology ) a straight LAN off-line structure, wherein transmission from each station on the network Fast switching ( fast switching ) that utilizes a route cache to speed up packet switching through a router floodming ( diffusion ) an interface when receiving traffic it will be transmitted to the originating communication interfaces in addition to the amount of =========================================================== ================ Blocking -> Listening -> Learning -> Forwarding IGRP uses a 24-bit metric . 1. Router 2. Routing implementation path selection ( routing decision ). Routing Table 3. WAN access . 4. Router broadcast domain division ( interruption ). RIP: Is the hop count as the metric for selecting the best route. The wrong route will be selected incorrectly. Immediate execution , immediate effect Apply application related configuration Bit, Frame, Packet,cisco ccie security v5 study guide, and Segment are all called : PDU (Protocol Data Unit) Is a point-to-multipoint connection. See control directVCC . AppleTalk----Apple Communications Corporation is a communication protocol suite designed for use in the Macintosh environment. There are currently two versions. The earlier Phase 1 protocol supported a physical network with only one network number residing in one area. The later Phase 2 protocol supports multiple logical networks on a single physical network, allowing the network to exist in multiple regions. See zone .