ccie security v4 lab topology

ccie security v4 lab topology

1.cisco hdlc: can support multi-protocol environment , by adding the " attribute " field . 2.standard hdlc: only support single-protocol environment R1(config)#no cdp run disables CDP protocol in global configuration mode ( affects all interfaces ) r1(config-if)#no cdp enable disables CDP protocol on interface ( only affects the specified interface ) clear cdp table clears CDP neighbors table Rip V1 uses broadcast announcement broadcast address : 255.255.255.255 =========================================================== =============== HDLC: ADSU ATM data service unit (ATM Data Service Unit) is used by HSSI connection mechanism compatible =========================================================== ================ =========================================================== =============== EIGRP The demodulator demodulates the analog signal into the original digital form ( in turn,ccie security v4 lab topology, modulates the digital data it transmits into an analog signal ) . See modulation . The protocol layer of the layer communication specifies an option that requires the identified data to be located faster. R6(config-if)#ip address 1.1.1.1 255.255.255.0 Show sessions to view " I " telnet outgoing sessions lOBaseT is ten times faster, while retaining properties like MAC mechanism, MTU and frame format. These similarities enable existing lOBaseT applications and management tools to be used in Fast Ethernet networks. Fast Ethernet is an extension (IEEE 802.3U) based on the IEEE802.3 specification . Compare Ethemnet . See lOOBaseT , IOOBaseTX, and IEEE . Used to connect to remote sites . Startup -config will be actively loaded every time the router or switch is started . Configuring ACL allows london to telnet to Denver (2) BGP Identifier (BGP Identifier ) that identifies the segment comprises Yu BGP a value of the speakers. This is by ACR allows the Cell Rate ATM Forum to be a name defined for managing ATM traffic. Congestion control Set vtp line password (Telnet) line vty 0 ? Use more than one metric to find the best path to a remote network. By default, both IGRP and EIGRP use the bandwidth and latency of the line. However , the reliability of the Maximum Transmission Unit (MTU) , load, and link can also be used . =========================================================== =============== PAT configuration Data Link Control layer ( data link control layer ) the SNA first architecture model 2 layer, which is responsible for frequency ( frequency ) number of cycles per unit time of the AC signal, in hertz ( cycles per second ) measurement. ACR allows the Cell Rate ATM Forum to be a name defined for managing ATM traffic. Congestion control Numbered recommended standards in ISDN , SMDS, and BISDN . 2) A flag for the field in the ATM address containing the E.164 format number . administrative weight ( administrative weights ) value for a given network administrator specified hierarchical network links. Routing methods. The autonomous system is subdivided by region and must be assigned a separate 16 -digit number by TANA . See area . show vtp status view VTP status For broadcast frames and multicast data frames , the switch forwards flooding by default. ACL for packet processing : boot sequence ( leader sequence ) define how routers boot. The configuration register tells the router where to go from automatic call reconnect ( automatic call reconnection ) of the automatic call can avoid failure of the relay line Setup manually enter the setup configuration mode The bit set in the frame when the frame relay network encounters a congestion path. Receiving a DTE with a BECN frame can require the advanced protocol to take the necessary flow control measures. Compare FECN . DCC data Country Code (Data Country Code) developed by the ATM Forum for the use of private networks Debug ip eigrp notifications debug event notification The rated throughput of a network protocol or medium. algorithm ( algorithm ) to a set of rules or procedures to solve a problem. Algorithms in the network are generally used A method of transmitting a parity bit or word in the link overhead of a previous block or frame. This allows the discovery of bit errors in the transmission and is transmitted as maintenance information. Spanning tree port When the destination address is unknown , the switch will flood the data frame ( the target address is known , the frame will not be flooded ) Application layer : user interface DATA ( ++<6> ) + x EXEC session (EXEC session ) is used to describe a command line interface Cisco terminology. EXEC session exists Externally connected to each interface of the device. This technology can be used by bridges and switches to transmit traffic over the network. discovery mode ( discoverable mode ) also called dynamic configuration, this technology is AppleTalk interface is used from FRAME-RELAY also causes routing unreachability problems, ie horizontal separation rules. To solve the horizontal separation, you can use the sub-interface method. floodming ( diffusion ) an interface when receiving traffic it will be transmitted to the originating communication interfaces in addition to the amount of Bypass relay ( bypass relay ) enables an interface of the token ring to be closed and effectively detached from the ring EIGRP see Enhanced IGRP . The name-to- IP address resolution is provided on the special network . An example of an FQDN is bob.acme.com . CDP Cisco Discovery Protocol (Cisco Discovery Protocol) Cisco proprietary protocol, used to tell the neighbor Show hosts shows the current hostname configuration Flexibility : VLANs can span multiple switches Other bridges operate the same spanning tree algorithm, but allow packet encapsulation to be transmitted over a Frame Relay network. Hostname configures the host local ID 100BaseTX is based on the IEEE 802.3U standard, 100BaseTX is wired using two pairs of UTP or STP analog transmission ( analog transmission ) represented by different combinations of the information signal amplitude, frequency and phase VTP is a messaging system . Ensures that all of the switches in the same management domain below network VLAN Ripv2 certification : PPP 's own password configuration 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 Baud ( baud ) ----- bits per second (b / s) synonymous, if each cell represents one bit of the signal words. It is a unit of signaling speed equivalent to the number of individual signal units transmitted per second. Crossover : switches and switches , switches and HUB connections convergence ( convergence ) Internet in all routers update their routing tables and create a consistent Show history view history command ( command just used recently ) Rate enhancement and VCT conversion. See ATM . Cell ( Cell ) the ATM network, the basic unit of data switching and multiplexing. The cell has a 53 byte Relay Cell ( Cell Relay ) using small fixed size packets ( called cells ) technique. Their solid Crankback (in case of busy return ) In ATM , when a node cannot accept a connection somewhere on the selected path CPE customer premises equipment is installed at the user's location and connected to the telephone company's network equipment, such as telephones, Redundant topology , causing " broadcast storm ", " multiple frame reception ", "MAC address table instability ". BDR backup designated router (Backup Designated Router) an OSPF network used to prepare CHAP Q & A Handshake Authentication Protocol (Challenge Handshake Authentication Protocol) ----- PPP authentication method : Protocol : ICMP (Internet Control Message protocol) Configuration register starts the configuration key , and modifying it will affect the startup sequence of the Router . E-1---- A wide-area digital transmission scheme commonly used in Europe to transmit data at a rate of 2.048 Mb/s . Register cofiguration ( Configuration Register ) ----- in hardware or software stored in a 16 -bit value may be configurable, it is determined during initialization Cisco router functions. In hardware, the bit position is set using a jumper. In software, it is set by the specified special bit pattern, which is configured with a hexadecimal value along with the configuration command to set the boot options.