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Which interface will the packet be sent out on?
the outgoing interface – the outgoing interface the packet should go out to reach the destination network.
What is Lo network interface?
lo is a special virtual network interface called loopback device. Loopback is used mainly for diagnostics and troubleshooting, and to connect to services running on local host.
What is a physical interface?
Physical interfaces consist of a software driver and a connector into which you connect network media, such as an Ethernet cable. Physical interfaces can be grouped for administrative or availability purposes.
What is Lo in IP address?
A loopback address is a special IP address, 127.0. 0.1, reserved by InterNIC for use in testing network cards. This IP address corresponds to the software loopback interface of the network card, which does not have hardware associated with it, and does not require a physical connection to a network.
What does Lo mean in Ifconfig?
lo is the loopback interface. This is a special network interface that the system uses to communicate with itself. wlan0 is the name of the first wireless network interface on the system. Additional wireless interfaces would be named wlan1, wlan2, etc.
What is IP loopback address?
What is the difference between a physical interface and a loopback interface?
A loopback interface is not a physical interface like Fast Ethernet interface or Gigabit Ethernet interface. A loopback interface is always up and allows Border Gateway Protocol (BGP) neighborship between two routers to stay up even if one of the outbound physical interface connected between the routers is down.
What is the difference between a logical and a physical interface connection?
A physical network connects two or more physical network interfaces. A logical network is a portion of a physical network that connects two or more logical network interfaces or devices. A logical network interface or device is the software entity that is known by an operating system.
How does a packet move from one interface to another?
Once router finds outgoing interface, packet move between interfaces by switching process. This is done by process switching, fast switching or cef switching. Forwarding can be done by using adjacency tables reside on the route processor or on interface cards that support switching.
How does packetdirect Provider Interface ( PD ) work?
PD works by allowing a PD client to explicitly manage networking traffic from a network adapter (NIC). PD gives the PD client control of the high performance send and receive functionality of the NIC through the PacketDirect client interface (PDCI). Internally, the PDCI send/receive functions are mapped directly to the PDPI.
Where does packet processing take place in the PD model?
Packet processing in the PD model always takes place in an execution context that’s owned (or controlled/coordinated) by the PD client.
Which is better packet sniffing or protocol analysis?
Packet analysis, often referred to as packet sniffing or protocol analysis. In most situations, _____________ taps are preferred because they require less cabling and don’t need two NICs on your sniffer computer.