0.0.0.0 default route in the peripheral area, all external packets, from the ABR to the externalIn the peripheral area, the Router others has all the routes within the as autonomous domain and a default route to the ABRThe network rollup LSA and the ASBR rollup LSA are the routes that advertise the outside of the internal router, or the internal route to the external routerThere are multiple ABR in the peripheral area, but a Dr? How is ABR configured?ABR ASBR, what type of LSA does DR drothers
aim of providing high-speed, viable ring network technology for IP and other packet switching networks.The elastic packet ring RPR uses a double-loop structure, which is the same as the FDDI structure. Maximum length of bare fiber between two RPR nodes in the RPR ringcan reach 100km. RPR will be a clockwise transmission of the fiber called the outer ring, will be transmitted counterclockwise in the optical fiber called the Inner ring. The inner ring
ethernet mtu 1500 Safety ID 100003 state activeSet vlan 4 name tec type ethernet mtu 1500 said 100004 state activeSet vlan 5 name test type ethernet mtu 1500 said 100005 state activeSet vlan 1002 name fddi-default type fddi mtu 1500 said 101002 state activeSet vlan 1004 name fddinet-default type fddinet mtu 1500 said 101004 state active stp ieeeSet vlan 1005 name trnet-default type trbrf mtu 1500 said 1010
src meet one on Get
DST 192.168.30.20 and src 192.168.30.20 DST and SRC must both meet
Protocol keywords
Specific network protocols on FDDI FDDI (Distributed Optical Data Interface Network)
Ip
Arp
Rarp
Tcp
Utp
Other less commonly used keywords and gateway,broadcast,less,greater, there are three kinds of logic operations, take the non-operat
types of either 1 (Ethernet) or 6 (IEEE 802.2).
*this is the case also of FDDI, where the RFC 1390 says
*fddi devices should accept ARP hardware of (1) Ethernet,
*however, to being more robust, we ' ll accept both 1 (Ethernet)
*or 6 (IEEE 802.2)
*/
if (arp->ar_hrd!=htons (arphrd_ether)
ARP->AR_HRD!= htons (arphrd_ieee802) | |
Arp->ar_pro!= htons (ETH_P_IP))
Goto out;
Break
Case ARPHRD_AX25:
if (Arp->ar_pr
specifications have shortcomings. 2.5) 10gbase-lrm
Prior to 10GBASE-LRM, there were two 10GE ports that supported multimode fibers, namely 10GBASE-SR and 10gbase-lx4. Why IEEE 802.3aq creates another multimode fibre port type 10GBASE-LRM.Only the new high-bandwidth OM3 (UM core) multimode fiber is installed, and the 10GBASE-SR can support distances of up to 300 meters. On commonly installed multimode fiber OM1 (62µm fiber cores) and OM2 (50µm cores) with low bandwidth, 10GBASE-SR can only be us
the dark installation junction box, connects with the information outlet. In addition, the building's computer mainframe room, network Center and program-controlled switchboard are located in the building 5 floors, monitoring system mainframe room is located in 1 floors Hall. 1 to 2 floors for the business hall. (Computer science)
Design scheme
According to the specific needs of users, integrated wiring including computer network system, voice system and security monitoring system thr
terminal equipment, such as PC and network printer. From transmission media and transmission speed can be divided into Ethernet switches, Fast Ethernet switches, Gigabit Ethernet switches, FDDI switches, ATM switches and Token ring switches. From the scale application can be divided into enterprise-class switches, departmental switches and workgroup switches. The scale of the vendors is not exactly the same, generally speaking, the enterprise switche
Overview of LAN Switches
The LAN switch has developed into a more expansive space from the traditional hub-and-LAN. For example, Cisco's Catalyst 5000 series LAN switch includes an integrated switched hardware architecture that supports switched 10-mbps Ethernet and 100-mbps Fast Ethernet, with Fast Ethernet, FDDI, switched token Ring, and layer 3rd switching capabilities. This class of switches can provide exchange access to workstations, servers, n
Table 1-1 is the TCP/IP four-layer model and the OSI seven-layer model table. We correspond the OSI seven-layer network model with the Linux TCP/IP four-layer conceptual model, and then categorize the various network protocols.
Table 1-1 TCP/IP four-layer model and OSI seven-layer model corresponding table
OSI Seven layer network model
Linux TCP/IP four-layer conceptual model
Corresponding network protocol
Application Layer (application)
Application Layer
Network Hardware RAC Protocol---------------------------------------------------HP Ope Nvms hp OpenVMS Gigabit Ethernet TCP (UDP for 10GR1 and above) HP Tru64 hp Trucluster Memory Channel RDG hp Tru64 H P trucluster Memory Channel UDP hp Tru64 hp Trucluster Gigabit Ethernet RDG hp Tru64 hp Trucluster Gigabit ether NET UDP HP-UX Oracle Clusterware hyperfabric UDP HP-UX Oracle Clusterware Gigabit Ethernet UDP-UX HP Service Guard hyperfabric UDP hp ServiceGuard Gigabit Ethernet UDP HP-UX Veritas C
First, Ethernet (Ethernet)Ethernet (Ethernet) is a computer LAN technology. The IEEE 802.3 standard of the Organization for the Standardization of Technology establishes the technical standard of Ethernet, which specifies the contents of the connection, electronic signal and media Access layer protocol including the physical layer. Ethernet is the most commonly used LAN technology, replacing other LAN standards such as Token Ring, FDDI and ARCNET. Eth
Network Debugging Tools Tcpdumpfunction : Print header information in the specified network interface that matches the Boolean expressionKey Words :① Type: Host (default), NET, port210.27. 48.2 // indicates that it is a host computer 202.0. 0.0 // indicates that a network at // indicate port number② confirm Transmission direction: SRC, DST, DST or SRC, DST and SRC210.27. 48.2 // the source address in the IP packet is this value 202.0. 0.0 // Destination network addres
that passes through different layers of the network subsystem
Connect to the kernel
LOOPBACK.C, Plip.c and E100.C
The device registration
driver inserts a data structure into the global network device chain list for each newly detected interface
struct net_device
struct net_device *alloc_netdev (int sizeof_priv, const char *name, void (*setup) (struct net_device *));
name is the name of the interface, which c
(config_firewall) [n/y/?] Select "Y" and the kernel will support the firewall.(3), TCP/IP networking (config_inet) [y/n/?] Select "Y" and the kernel will support the TCP/IP protocol.(4) The IPX protocol (CONFIG_IPX) [n/y/m/?] Select "Y" and the kernel will support the IPX protocol.(5), Appletalk DDP (config_atalk) [n/y/m/?] Select "Y" and the kernel will support the Appletalk DDP protocol. 8. SCSI support (SCSI supported) If the user wants to use a SCSI device, you can configure the appropriate
the traffic you are interested in
Log records
Supports Ethernet, FDDI, ISDN, SLIP, PPP, and loopback interface types
Using the native socket interface built in the Linux kernel, it can be used for a wide range of supported network adapters.
Full screen, menu-driven operation
To install
Ubuntu and its derivative version
The code is as follows:
sudo apt-get install Iptraf
Arch Linux and its derivative version
The code is as follows:
sudo pac
the network according to DNS naming rules, and are responsible for the conversion of domain names to IP addresses when the communication is completed.
DNS Domain Name server
DNS (Domain Name System, field name systems) refers to the directory service system that queries the domain name or IP address on the Internet. When a request is received, it can translate the domain name of another host to an IP address, or vice versa. Most domain name systems maintain a large database that describes the c
/eide drives, 10m/100m Ethernet cards, Token ring network card, FDDI interface card, a variety of PCMCIA devices, flash, sound card and so on.
The openness of 5.2 lynxos
Compatibility with POSIX.1A, 1b, 1c, and BSD4.4 makes it easy to migrate to LynxOS with POSIX 1003 or UNIX-compliant programs.Supports a variety of CPU motherboards: Includes COMPACTPCI (6U/3U) and Standard PCI, Vme/eurobus, pc/104, and pc/at hardware.Various peripheral adapters: 10/1
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