gbic transceiver

The IT Certification Examination Resources Network has collected a number of training materials for Cisco agents, including answers to pre-sales questions concerning routers, switches, IP/TV, firewalls, VPNs, network management, HFCs, VOIP, and equipment procurement., it can also be used as an entry-level document.12. Question: Which switches Does Cisco currently support layer-3 switching?Answer: Catalyst 2948G-L3, Catalyst 4908G-L3, Catalyst 4003, Catalyst 4006, Catalyst 5000, Catalyst 6000, an

Of the six Ethernet switches we tested, the Edimax es-5800r and LeaPComm6004 switches are not managed switches, Accton ES4508, and the Thinker3800 switches of the creators are all network-management switches, 3Com 4900 is to support the three-layer and four-layer switch, Shenzhou digital D-link DGS3308TG is a three-tier switch. Performance is the brunt The 6 products include all copper ports, all fiber ports, and gbic ports, of which 3Com 4900 has 1

Directory Directory Summary Introduced Contikimac 1 Contikimac Timing 2 packet detection and fast sleep 3 Phase Lock Transmission Realize Evaluation 1 Micro Benchmark 2 Network Power consumption Related work Summarize Reference documents SummaryTo reduce system power consumption, a low-power wireless device must shut down the radio as much as possible, but in order to receive communication messages

wire breaker instead, after all, no-blade wire breaker generally uses a hexagonal design, which can effectively prevent minor cables from being damaged when it is used for wire stripping. On the contrary, when using a blade wire breaker to create a network cable, the sharp blade will cut the skin of the cable accidentally, which brings a fault risk to the efficient communication of the network in the future. Optical module, reasonable connectionThe so-called optical terminal module is the conne

Port The AuI port is the interface used to connect to the coarse coaxial cable. It is a "d" Type 15-pin interface, this is one of the most common ports in the ring or bus network. The router can connect to the 10base-5 network through a coarse coaxial cable transceiver. But more is the use of external transceiver (AUI-to-RJ-45), to achieve the connection with the 10base-t Ethernet. Of course, you can also

used normally, the general router has a control port "console ", it is used to connect to a computer or terminal device and configure a router through specific software. Next, let's take a look at the router's LAN and WAN connection ports. 1. LAN interface According to the interface name, we can see that these interfaces are mainly used to connect routers and LAN, because the LAN type is also diverse, therefore, the LAN interface type of the router may be diverse. Different networks have di

Next, I will explain the implementation of the SATA host protocol's physical layer. Is the physical layer structure given in the standard SATA protocol document. It contains the control module, clock data extraction unit, synchronous character source and synchronous character detection module, and analog front-end. The control module coordinates and controls the Logic Functions of the entire physical layer, and provides control signals and status information interfaces to the upstream protocols.

1. Do you see the light on the optical transceiver or optical module and the twisted pair port led? A, such as the transceiver of the optical port (FX) LED is not lit, please determine if the fiber link is cross link? The fiber jumper is connected in a parallel way and the other end is connected in a cross way. b, such as a transceiver of the light port (FX)

1, Catalyst 35500XL/2950XL stack is how to achieve? A. Special tiered cabling is required, 1 m long or 50 cm long (cab-gs-1m or cab-gs-50cm) and a dedicated gigabit stacked card Gigastack GBIC (WS-X3550-XL) (which already contains cab-gs-50cm stacked cables). B. There are 2 stacking methods available: Daisy Chain (providing 1G of bandwidth) or point-to-point method (2G bandwidth available). C. 2 ways to do backups. D. Daisy chain method can suppor

A. About stacking technology: How does the 1.Catalyst 3500XL/2900XL stack be implemented? A. Special tiered cabling is required, 1 m long or 50 cm long (cab-gs-1m or cab-gs-50cm) and a dedicated gigabit stacked card Gigastack GBIC (WS-X3500-XL) (which already contains cab-gs-50cm stacked cables). B. There are 2 stacking methods available: Daisy Chain (providing 1G of bandwidth) or point-to-point method (2G bandwidth available). C. 2 ways to do back

situation of Internet cafes users, the main link is worth the Internet Café users reference, we recommend the first way. The first is the use of optical fiber transceiver to achieve the connection between the fiber and the dual-Wan port router, this way the biggest feature is the low input cost, but also the most suitable for Internet users a way. In the choice of fiber transceiver, the performance is of

whether the data can be sent, if it can be sent to the data with some control information, and finally the data and control information in the specified format sent to the physical layer, when the data is received, the MAC protocol first to determine the information entered and whether transmission error occurred, If there is no error, the control information is removed and sent to the LLC layer. Ethernet MAC is defined by the IEEE-802.3 Ethernet standard.The physical layer PHY is a physical in

Twisted Pair wires have two connection standards: EIA/TIA 568B standard and EIA/TIA 568A standard. T568A line Sequence 1 2 3 4 5 6 7 8 Green, white, orange, white, blue, white, orange, brown, white, brown T568B line Sequence 1 2 3 4 5 6 7 8 Orange white orange green white blue white green brown white Brown Express CONNECT: Both ends are connected in the T568B line sequence. Crossover line: One end is connected in T568A line Order and the other end is connected in T568B line order. Connection Met

no longer possible to inherit from another base class. Therefore, it is a good idea to provide an abstract interface (interface), a class can implement multiple interfaces, thus simulating the implementation of "multi-Inheritance", for the design of the class provides greater flexibility. Minimizing the direct access to variables the encapsulation principle of data should be normalized, not exposing the properties of one class to other classes, but should protect them by means of access, which

connect to the coarse coaxial cable. It is a "d" Type 15-pin interface, this is one of the most common ports in the ring or bus network. Vro accessibleThe coarse coaxial cable transceiver is connected to the 10base-5 network. However, it is more with the help of external transceiver (AUI-to-RJ-45), to achieve Network connection. Of course, you can also use other types of

. GSM7324 provides line rate switching and Feature Selection for L2/L3/L4 layers without any performance loss for all types of interfaces through the hardware switching structure. Supports a wide range of QOS, ACL, and hardware-based access control lists.2) L2 aggregation switch:The design principles of L2 switches aim to improve the manageability, reliability, and scalability of the network, and configure the fully Gigabit ports of the network management layer switch GSM712. In this project, ni

BGP experiment, you can even use this configuration to establish full-network connectivity, and then create a tunnel port to implement the experiment topology. During remote configuration, you can save multiple configuration files and switch between them. The configuration file named router-confg can be used as a final backup-if you accidentally delete the configuration, there will still be an available configuration after the system restarts.Conclusion: The initial enchanting phenomenon is cau

port is in the err-disable State because it detects a loop on port 20th. Check the port status Switch # showinterfa0/20 status PortNameStatusVlanDuplexSpeedType Fa0/20linktodatabackuperr-disabled562auto10/100 BaseTX This more clearly implies that the port is in the err-disabled state. Now that the port is in the wrong state, we should have a step to repeat it into a normal state. Save pace 2: Configure the port from the error status Go to the Global Setting Mode of the switch and run errdisable

)ConfigurationNative VLAN (802.1q) Switch (config-if) # switchport trunk native vlan-num // The trunk port that encapsulates 802.1q can accept data streams with or without tags,VswitchTransmits unlabeled data streams to the native vlan. By default, the native VLAN is VLAN 1. Use no switchport trunk native vlan PortConfigurationThe command returns to the default status. (6)ConfigurationA group of Ports 4006 # configure terminal 4006 (config) # interface range fastethernet2/1-5 4006 (config-if-ran

CISCO 6509 core switch WS-C6509-1300AC = Catalyst 6509 Chassis w/1300 w ac Power SupplyRedundant Power WS-CAC-1300W/2 Catalyst 6000 Second 1300 w ac Power SupplySwitch Engine WS-X6K-S2-MSFC2 Catalyst 6500 Supervisor Engine-2, 2GE, plus MSFC-2/PFC-2Redundant switching engine WS-X6K-S2-MSFC2/2 Catalyst 6500 Red. Sup2, 2GE, MSFC2 and PFC2 (In Chassis Only)Backplane expansion Module WS-C6500-SFM Catalyst 6500 Switch Fabric ModuleElectrical port module WS-X6316-GE-TX Catalyst 6000 16-port 1000TX GE M