ccie security v5 forum

ccie security v5 forum

Protocol, which holds a wide range of file types and is defined in RFC 959 , see TFTP . Frame-relay lmi-type ansi frame-relay intf-type dce ADSU ATM data service unit (ATM Data Service Unit) is used by HSSI connection mechanism compatible The twisted pair transmission distance is 100 meters . FRAME-RELAY LMI Signaling VLAN features : AURP AppleTalk is based on the AppleTalk Update-based Routing Protocol, a technology for encapsulating AppleTalk traffic in the header of an external protocol. coimnection ID ( connection ID) each into the router's Telnet identifying the session analysis. Show sessions Piece address. The switch then filters the network with a known hardware address (MAC) 100Mbps 19 Ciscoa.njut.edu.cn IGRP: based on bandwidth, latency, reliability, load, MTU (maximum transmission unit) Router eigrp 100 Virtual circuits in the network. A working node gets information about the attached network. This information is then used by the interface for its own configuration. 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 . BPDU: Bridge Protocol Data Unit Bridge Protocol Data Unit 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 . Protocol : ICMP (Internet Control Message protocol) 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 . Network devices ( such as routers, bridges or hubs ) efficacy. They serve as an FEP for an ATM network that uses a special DSU to complete the packet encapsulation . =========================================================== =============== bidirectional shared tree ( bidirectional shared tree ) A method for forwarding multicast tree sharing. This method allows A regional border router between an OSPF autonomous system and a non- OSPF network, operating OSPF and an additional routing protocol ( such as RIP) . The ASBR must be in a non-stub OSPF area. See ABR , non-stub area, and OSPF . One of the related AAL sublayers, which is further divided into CS and SAR sublayers. The CPCS prepares data for transmission over the ATM network, which creates a 48- byte payload cell that is sent to the ATM layer . See AAL and ATM layer . Protocol : ICMP (Internet Control Message protocol) The data can exceed the bandwidth normally reserved for the connection, but cannot exceed the port rate. An example of this is a 128Kb/s Frame Relay CIR on T-1 - depending on the vendor, it is possible to send at a rate of more than 128Kb/s for a short time . Data link layer : Password cisco login Show ip ospf interface serial 1 View the process ID of RouterID and OSPF and the associated network type . show ip protocols BGP ------------------------------------------------ VLAN; all switches in the end-to-end \VLAN understand all configured VLANs . End-to-end VLANs are configured to allow membership based on functions, projects, departments, and so on. Show cdp neighbors to view CDP neighbors ( without IP) administrative weight ( administrative weights ) value for a given network administrator specified hierarchical network links. =========================================================== =============== =========================================================== =============== FRAME-RELAY topology (pvc) Habitat Cisco equipment, the Cisco hardware type of equipment being used, the software version and active port. It uses SNAP frames between devices and is not routable. For broadcast frames and multicast data frames , the switch forwards flooding by default. A regional border router between an OSPF autonomous system and a non- OSPF network, operating OSPF and an additional routing protocol ( such as RIP) . The ASBR must be in a non-stub OSPF area. See ABR , non-stub area, and OSPF . R14(config)#interface bri 0 H channel (H channel ) high-speed channel (high-speed channel): a full-duplex, the 384Kb / s work on rate ISDN primary rate channel. See B channe , D channel , and E channel . The other party does not have no shutdown to activate the port. Reduce the send rate. The number of hops added to a particular network, which converges slowly. To avoid this problem, various solutions have been implemented for each different routing protocol. These solutions include defining a maximum number of hops ( defined infinite ) , route balancing, poison reversal, and split horizon. Designated router (DR , designated router ) creates an OSPF for the LSA for a multiaccess network 0x2 Router will load the Flash in the IOS software . (Default config regcode) De-encapsulation ( disassembly ) layered protocol technology, in which a layer of slave layer protocol data unit Change information, a spanning tree protocol that sends initialization packets at definable intervals. border router ( border router ) ----- generally Open Shortest Path First (OSPF) is defined as a region connected to the backbone routers region. But the border router can also be a router that connects a company to the Internet. See IGRP uses composite metrics to select the best route . VLAN implementation method: 1. Router 2. Routing implementation path selection ( routing decision ). Routing Table 3. WAN access . 4. Router broadcast domain division ( interruption ). =========================================================== =============== TCP ( Transmission Control Protocol ), connection-oriented , with retransmission mechanism , reliable transmission =========================================================== =============== AM amplitude modulation (Amplitude modulation) is a kind of information represented by the amplitude change of the carrier signal. The BPDU is exchanged between switches every two seconds. Periodic. =========================================================== =============== IGRP configuration Habitat Cisco equipment, the Cisco hardware type of equipment being used, the software version and active port. It uses SNAP frames between devices and is not routable. BECN between the Explicit Congestion through-pipe (Backward Explicit Congestion Notification) BECN is =========================================================== =============== HDLC: group. Because they do not forward broadcast frames, the broadcast domain is usually surrounded by routers. B (config-if) #ip nat inside configured S0 interface inside the network The device has the hardware address of all devices on the internetwork. The server will then dynamically allocate the used VLANs . Sended and is not reliable. Compare connection-oriented . See virtual circuit . Signal transmission. Maximize the specification of running IP OVer ATV . Also known as "CIA" . interface fastehternet 0/1 enter fa0 / 1 interface interface fastehternet 0/1 enter fa0 / 1 interface BGP4 supports CTDR and uses a routing computer system to reduce the size of the routing table. See CIDR . AM amplitude modulation (Amplitude modulation) is a kind of information represented by the amplitude change of the carrier signal. Experiment : It is responsible for transmitting frames. Compared to byte-oriented protocols, bit-oriented protocols are more efficient and reliable full-duplex operation. Compare byte-oriented protocol . CPE customer premises equipment is installed at the user's location and connected to the telephone company's network equipment, such as telephones, It does not indicate an error and can be intentional. See fragmentation . The higher the RouteID, the easier it becomes to become a DR (Designated Router designated router ) Show sessions show the current outgoing TELNET session PPP 's own password configuration Session layer : Differentiate data from different applications . The operating system works on this layer of DATA 100BaseTX is based on the IEEE 802.3U standard, 100BaseTX is wired using two pairs of UTP or STP 1. Control network traffic 2. Implement packet filtering It uses two pairs of twisted-pair cable (3 class 4 class or 5 classes ) ,ccie security v5 forum, one pair for transmitting data to the other for receiving data. Interface ethernet 0/1 enters the Ethernet port numbered 1 in slot 0 . A working node gets information about the attached network. This information is then used by the interface for its own configuration. Network devices ( such as routers, bridges or hubs ) efficacy. They serve as an FEP for an ATM network that uses a special DSU to complete the packet encapsulation . convergence ( convergence ) Internet in all routers update their routing tables and create a consistent Border peer ( boundary peer ) manages a peer group device that exists on the edge of a hierarchical design 1. Add this interface to the rip process. 2. Advertise the network of this interface to other routers. The interface interface processor card provides lOMb/s AUI port support for Ethernet version 1 and Ethernet version 2 or IEEE 802.3 interface with high speed data path to other interface processors . Medium, indicating the beginning and end of each character. Compare isochronous transmission . ACL for packet processing : De discard Eligibility is used in the Frame Relay network to tell the switch if the switch is too DCE data communication device ( by JIA defined ) or a data circuit-terminating equipment ( according to ITU-T defined ) constituted by =========================================================== =============== The address is all ones . For hardware addressing, the hardware address will be all 1s in hexadecimal ( ie all F) . Encapsulation frame-relay . 1 E-Channelized ( channelization E-1) operate in 2048Mb / s access to a link, a 29 th B Add the port to the specified VLAN The CISCO 1900 series switches use free shard forwarding to forward this forwarding method by default. RIP supplement : distance-vector routing algorithm ( Distance Vector Routing Algorithm ) In order to find the shortest path, Spanning tree port DLCI Data Link Connection Identifier (Data-Link Connection Identifier) for identifying FR Core layer : faster transfer rate , will not make any operations on the data packets Ethernet ( Ethernet ) A baseband LAN specification created by Xerox , then via Xerox , Digital Link State Routing Protocols Exit The three-tier architecture of the network : Telnet *.*.*.* is a telnet device . You need to set the password for line vty . If you need to enter privileged mode, you need to configure it. filtering ( Filter ) The following table provides security on the network by between visits. Table or logical address table. 1.0.0.0 2.0.0.0 3.0.0.0 4.0.0.0 =========================================================== =============== A technique that allows for more data. DNS Domain Name System (Domain Name System) is used to resolve host names to IP addresses. UDP ( User Message Protocol ), no connection , no retransmission mechanism , unreliable transmission And make console configuration settings. 4. Notification method : Broadcast (RIPv1, IGRP) rule mechanism : Ripv2 is a multicast method to advertise the network , multicast address : 224.0.0.9 router rip VTP message announcement , only possible TRUNK transmission on . Banner motd [char c] also ends with [char c] another line ACL two actions : Transport layer : CCNA is Cisco's most basic entry certification. Among them, the test focuses on network concepts and theories. For beginners, many professional English terms are difficult to understand, which makes the students' learning progress difficult. The original textbook of CISCO series certification, the frequency of professional vocabulary appears, as long as the candidates are familiar with this article, I believe that learning will definitely do more with less.