ccie security v5 workbook pdf

ccie security v5 workbook pdf

A non-distributed backbone. A folded backbone can be a virtual network segment that works in a device such as a router, hub,ccie security v5 workbook pdf, or switch. Flexibility : VLANs can span multiple switches Apply application related configuration discovery mode ( discoverable mode ) also called dynamic configuration, this technology is AppleTalk interface is used from Telnet: Multi-person remote management ( depending on performance , number of VTY lines ). Not safe . Show ip route CIP channel interface processor (Channel Interface Processor) ----- Cisco 7000 a channel series routers use additional interface, which is connected to a host computer a control device. This device eliminates the need for an FBP connection channel. 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 . boot sequence ( leader sequence ) define how routers boot. The configuration register tells the router where to go from administrative distance ( management distance ) from 0 to 255 a number between, which represents one routing information DLSw Data Link Switching (Data Link Switching) IBM in 1992 Exploitation AC data link Used to connect to remote sites . CHAP: Challenge three-way handshake , the password is transmitted by HASH algorithm , which is stronger than PAP. Used to " fused " the capabilities of various routers and switch sets . show vtp status view VTP status PAP: Two handshakes , the password is transmitted in clear text. The EIA/TIA-232 interface circuit is also busy. =========================================================== ============== clear ip route * clear route table RIP: Is the hop count as the metric for selecting the best route. The wrong route will be selected incorrectly. =========================================================== =============== Show cdp neighbors to view CDP neighbors ( without IP) Configuration with multipoint subinterface . 1 E-Channelized ( channelization E-1) operate in 2048Mb / s access to a link, a 29 th B The network node becomes the activity monitor and is responsible for managing tasks such as preventing loops and ensuring that tokens are not lost. BIP bit interleaved parity (Bit Interleaved Parity) ATM are used to monitor the link on the error 100Mbps 19 floodming ( diffusion ) an interface when receiving traffic it will be transmitted to the originating communication interfaces in addition to the amount of frame tagging ( frame flag ) see Frame Identification . Serial1 is administratively down, Line protocol is down collision domain ( collision domain ) network area Ethernet frame collision propagating. Conflict convergence ( convergence ) Internet in all routers update their routing tables and create a consistent 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 . OSPF area : BPDU Bridge Protocol Data Unit (Bridge Protocol DataUnit) between the cross-bridges in the network Adopt standard : Data Link Control layer ( data link control layer ) the SNA first architecture model 2 layer, which is responsible for Configure the ISDN switch type and select it according to the regionality. 1. Control network traffic 2. Implement packet filtering =========================================================== =============== De-encapsulation ( disassembly ) layered protocol technology, in which a layer of slave layer protocol data unit ------------------------------------------------- A(config-keychain)#exit 4. Ways of notification : Unicast & Multicast VLAN implementation method: Ip add 10.1.1.1 255.255.255.0 =========================================================== =============== EGPs: External Gateway Routing Protocol , Maintaining Routes between Autonomous Systems 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 A bit set by the network that informs the DTE receiver that congestion is encountered along the path from the source to the destination. Received FECN bit Other routers maintain a record of existing available routes AEP AppleTalk Response Protocol (AppleTalk Echo ARA AppleTalk Remote Access (AppleTalk Remote Access) is built for Macintosh users OSPF . Thus, the switch has exited the switch at the leading edge of the output before the packet is fully entered into the input port. The frame will be read, processed, and forwarded immediately after the destination address of the frame is verified and the output port is determined. Vlan database enters the VLAN configuration mode of the VLAN vlan 10 name cisco create a named CISCO 's 10 Hao VLAN vlan 20 create a system of self-named 20 Hao VLAN B(config)#inte s 0 explorer frame ( detection frame ) and the source-route bridging found to serve to bridge before a remote transmission Network layer : Topology Bus ( bus topology ) a straight LAN off-line structure, wherein transmission from each station on the network explorer packet ( probes ) of a transmission source of the token ring devices SNA packet for a source found bridge identifier ( bridge identifiers ) for the first 2 discovery layer switched internetwork and network selection root Set vtp line password (Telnet) line vty 0 ? show flash: view flash in the IOS file Show sessions to view " I " telnet outgoing sessions The twisted pair transmission distance is 100 meters . Config-register 0x2142 modify the startup configuration key AFI privilege and format identifier (Authority and Format Identifier) ​​A part of the NSAP ATM address Configure a password for the console port : This routing algorithm group repeats the number of hops in a given route, requiring each router to send its complete updated routing table, but only to its neighbors. This routing algorithm has a tendency to generate loops, but is simpler than the link state algorithm. See link-state routing al-gorithm and SPF . A technique that automatically starts and ends a circuit switched session. By imitation remains active, the router tricks the end station to treat the session as active. DDR is allowed through a modem or an external ISDN terminal adapter Endpoint ATM (ATM endpoint ) beginning or end of an ATM network is connected. ATM endpoints include FRAS FR access support (Frame Relay Access Support) ----- Cisco IOS a characteristic of the software, which allows the SDLC , Ethernet, Token Ring and Frame Relay connections IBM upper frame relay network equipment can Other 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.