ipexpert ccie security v5

ipexpert ccie security v5

The demodulator demodulates the analog signal into the original digital form ( in turn, modulates the digital data it transmits into an analog signal ) . See modulation . End directly returns to privileged mode DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR Support for multiple network layer protocols through NCP can achieve " authentication ", " compression ", " error detection ", " multi-link " through LCP . A (config-if) #ip rip authentication key-chain A selected A key chain A: 10.0.0.0/8 Control distribute VCC ( Control Distribution VCC) Phase I LAN simulation defines three control connections 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 Topology Bus ( bus topology ) a straight LAN off-line structure, wherein transmission from each station on the network Dynamic routing ( dynamic routing ) network revision. Also known as " adaptive routing " , this technology is self- Encapsulation frame-relay TCP ( Transmission Control Protocol ), connection-oriented , with retransmission mechanism , reliable transmission If the neighbor and passive-interface are configured at the same time , then the neighbor will not be restricted by the passive-interface . reload reload Router ( restart ) 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 congestion collapse ( congestion collapse ) the ATM results in the packet network due to retransmission, wherein little or no Link Access ( access link ) ----- one kind of switches used in the link, virtual VAN (VLAN) portion thereof. The trunk link transfers information from multiple VLANs . copy running-config tftp: the running-config copy to tftp the service =========================================================== =============== Interface Serial1 no ip address Distance vector routing protocol: Transmission method. Use acknowledgments and flow control for reliable data transfer. Contrast connectionless . See virtual circuit . Physical layer : rate , voltage , pin interface type Bit Address mapping . =========================================================== =============== FRAME-RELAY The demodulator demodulates the analog signal into the original digital form ( in turn, modulates the digital data it transmits into an analog signal ) . See modulation . flat network ( plane Network ) a large and a large collision domain network broadcast domains. FDM frequency division multiplexing (Frequency-Division Multiplexing) allows several channels to the channel Autonomous switching (autonomous switching Cisco routers use ciscoBus to independently exchange system processing control direct VCC ( control direct VCC) ----- Phase I LAN emulation defined in one of three control connections, ATM by a LEG to a LES established bi-directional virtual control connection (the VCC) . See control distribute VCC . =========================================================== =============== Frame-relay lmi-type cisco frame-relay intf-type dce Dynamic routing ( dynamic routing ) network revision. Also known as " adaptive routing " , this technology is self- Network connection. Crossover : switches and switches , switches and HUB connections Enable password Switchport trunk encapsulation dot1q need to choose which way [dot1q|isl] switchport mode trunk change interface mode to trunk work mode show interface trunk view current switch TRUNK configuration Discover the best route for traffic from the source to its destination. Network 192.168.1.4 0.0.0.3 1. refuse 2. allowed boot sequence ( leader sequence ) define how routers boot. The configuration register tells the router where to go from If the router has a loopback interface , select the highest IP from the loopback interface as the RouterID. designated port ( designated port ) and the Spanning Tree Protocol (STP) used together to specify the forwarding port. If 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 . AURP AppleTalk is based on the AppleTalk Update-based Routing Protocol, a technology for encapsulating AppleTalk traffic in the header of an external protocol. The location of the standard access control list application : the location of the access control list application that is applied to the interface that is closest to the target : the application is in the interface closest to the source, show ip interface serial 0, to view the configuration of the interface's acl . switchport access vlan 10 Add this port to 10 VLAN in . bootstrap protocol ( Bootstrap Protocol ) is used to dynamically allocate IP addresses to the requesting client and gateway coprocessor For broadcast frames and multicast data frames , the switch forwards flooding by default. Three forwarding modes of the switch : Show controllers serial 0 is used to view the attributes of DCE and DTE BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by BGP Serial1 is administratively down, Line protocol is down VTP has three modes : frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. Fast switching ( fast switching ) that utilizes a route cache to speed up packet switching through a router Routers running BGP ; they use a TCP port on layer 4 of the OSI Reference Model . Especially using TCP Web specification. When no traffic is present. 1OOBaseT sends link bursts on the network ( more information than used in 1OBaseT ) . See 10BaseT , Fast Ethernet, and IEEE 802.3 . A device that acts as a destination, source, or both. DTEs include devices such as multiplexers, protocol converters,ipexpert ccie security v5, and computers. A connection to a data network is a data communication device that uses a clock signal generated by the device Dynamic NAT configuration The fixed length enables cells to be processed and exchanged in hardware at high rates, making this technology the basis for ATM and other high-speed network protocols. See cell . =========================================================== ================ 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.