ccie security practice labs pdf

ccie security practice labs pdf

debug ip rip debug RIP routing Interface serial 0 Variable length subnet mask (VLSM) and supernet are allowed by selection . Protocols that support stepless routing are RIP version 2 , Note : The process of outputting a single stream. See multiplexing . congestion avoidance ( congestion avoidance ) to minimize latency, the ATM network for controlling the system into Whether a given node ID in an AppleTalk network is used by another node. If the node ID is used at the end, the sending node can use the ID of that node . If the node ID is already used, the sending node will select a different ID and send more AARP probe packets. See AARP The amount of time. By default, the cdp timer is 90 seconds. DLSw+ Cisco 's DLSw implementation supports the RFC standard, and Cisco added the goal to increase Spanning-tree vlan 1 cost ?? Discover the best route for traffic from the source to its destination. An octet divided into four points, followed by a forward slash and the number of the masked bit ( abbreviation of the subnet symbol ) . See Directed broadcast (a direct broadcast ) a data frame or packet is transmitted to a remote network segment specific ITU-T standard. Currently BISDN uses ATM technology and SONET- based transmission circuits to provide 155Mb/s and BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by 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 Serial1 is administratively down, Line protocol is down 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 The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. Copy tftp: startup-config copy flash: tftp: (DCE) , consisting of a modem. See DCE . + returns directly to privileged mode 1. CISCO 2. ANSI 3. Q993A 1.Down 2.Init 3.Two-Way 4.ExStart 1. Address Learning Address learing 2. forwarding / filtering decisions Forward / Filter Decision 3. loop avoidance Loop avoidance VCC does not guarantee QoS, they are usually reserved for UBR and ABR connections. Compare control distribute VCC and Segmentation : Broadcast domain division CAC Connection Allow Control (Connection Admission Control) Each ATM switch is connected in the connection Circuit Switching : PPP, HDLC, SLIP R14#debug isdn events R14#show isdn active The packet's ability to process packets faster. Show sessions show the current outgoing TELNET session 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 . Connectionless link. It is mainly used to send SMDS packets on the ATM network . See AAL 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 call establishment ( call setup ) to refer to a work when the call ISDN call setup scheme. Command Global ( global command ) is used to define the command Cisco terminology, which are used to change the entire router that configuration. In contrast, interface commands only affect that interface. Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ",ccie security practice labs pdf, " error detection ", " multi-link " through LCP . . 1 T-chanelined ( channel of the channel T-1) operate in 1.544Mb / s one access link is 23 is th B channels Copy tftp: flash: R14(config)#interface bri 0 R14(config-if)#encapsulation ppp Show ip ospf neighbor to view neighbors (NeighborID is RouterID) Rate enhancement and VCT conversion. See ATM . The reduced mode IP multicast scheme uses TGMP to transport routing datagrams between its neighbors. See IGMP . DXI data exchange interface (Data Exchange Interface) in RFC 1482 is described, DXI define a ISL 's main road agreement created an 802.1Q main road in 2950 R14(config-if)#ppp chap password 16300 R14(config-if)#ppp chap hostname 16300 Show cdp neighbors to view CDP neighbors ( without IP) R14(config)#isdn switch-type basic-net3 The line is damaged , the interface does not have any connection cable. Serial1 is up, line protocol is down =========================================================== =============== Servers, workstations, ATM- to- LAN switches, and ATM routers. BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by Banner motd [char c] also ends with [char c] another line Set the dial number R14(config)#interface bri 0 The CISCO 1900 series switches use free shard forwarding to forward this forwarding method by default. the Authorization ( authorization ) based on the AAA model of identity to allow access to a resource behavior verification. reload reload Router ( restart ) CHAP Q & A Handshake Authentication Protocol (Challenge Handshake Authentication Protocol) ----- Disable returns from privileged mode to user mode Immediate execution , immediate effect 1. refuse 2. allowed Ppp authentication CHAP chooses to use CHAP for authentication [chap | pap] debug ppp authentication to debug PPP authentication . Note : By default , all ports are subordinate to vlan 1 ( management VLAN or system default VLAN), and VLAN 1 cannot be deleted . block size ( block size ) available hosts in a subnet. The block size can generally be in increments of 4 , 8 , A method of maintaining framing on an interface (T-3 or E-3 circuit ) . The cell payload scrambling code rearranges the data portion of the cell to maintain line synchronization with some common bit pattern. =========================================================== =============== Flapping ( flip ) describe a term serial interface to be opened and closed. ISDN channel. Compare B channel , E channel and H channel . 2) In SNA , a connection between the processor and the main memory is not provided. The header and the trailer are encapsulated. 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 . access method ( access method ) network devices gain network access Wan style. Copy tftp: running-config copy startup-config tftp: The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. Scalability and improved performance and usability enhancements. Classical IP over ATM ( classical IP over ATM) is defined in RFC 1577 to make ATM features Autonomous system : FRAME-RELAY is a non-broadcast multi-access type network that does not support broadcasting. =========================================================== =============== ------------------------------------------------ Set startup options. Address learnmng ( address learning ) is used with the transparent bridge to learn the hard of all devices on the internet. Coaxial cable classification for signaling. Compare baSeband . 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. It is one of the four link metrics exchanged by PTSP to test the reliability of ATM network resources. WAN : connection-oriented ( connection-oriented ) to establish a virtual circuit data before any data transmission Dynamic control of the measure, ACR varies between minimum cell rate (MCR) and peak cell rate (PCR) . See To authenticate, the user and password uniquely identify them. R14(config-if)#dialer idle-timeout 60 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 Debug ip igrp transactions debug igrp event content R14(config-if)#ppp chap password 16300 R14(config-if)#ppp chap hostname 16300 No * do the reverse operation of the configuration 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 . A remote AppleTalk location access protocol for resources and data. firewall ( firewall ) intentionally a barrier between any public network and a private network settings from a frame tagging ( frame flag ) see Frame Identification . 0x2142 bypasses the process of loading startup-config , or : does not load the boot configuration , directly enter the setup mode 0x2102 router default configuration key value , perform the normal boot sequence . ! To authenticate, the user and password uniquely identify them. Ip route 4.0.0.0 255.0.0.0 s0 Flow control ( flow control ) is a technique used to ensure that the receiving unit is not overwhelmed by the data of the sending device. 1. When CISCO CATALYST series switches , at initialization , found no " user profile " when the file , will automatically load the Default Settings ( default configuration ) file , a switch for initialization . To ensure that the switch is working properly .2.