4.5 Flashcards
The database of IP to Mac addresses mappings is called
Arp table or arp cache
These are created when a client makes an arp request for information that cannot be satisfied by data already in the arp table once received the new information is recorded in the table for future reference
Dynamic Arp table entries
These are those that someone has entered manually using the art utility this are utility access via the Art command in the windows and Lennox provise away of obtaining information from manipulating a devices our table
Static arp tables
You’re command to be used on IPV4 devices to diagnosing repair problems with the yard table if you see the following
Inconsistent connectivity issues related to certain addresses
This information carried on ICMP version six messages automatically detect neighboring devices and automatically adjust with neighboring knows fail or are removed from the net work
Neighbor discovery protocol
NDP illuminates the need for Arp and some ICMP functions in IPV six networks and it’s more resistant to hacking attempts than
Arp
A router periodically send on our a message out to each of its configured and phrases to provide information about network prefix like MCU or hop limits the router might also messaged her self as a default router
Router advertisement
To void waiting for the next scheduled our a message a newly connected IP V6 an RS message to request information from the router right Al
Router solicitation
Router my son this type of message to inform the host of the net work then another router is a better gateway to participate for a particular destination at work
Router redirect
IPV six devices send messages to request Mac addresses of neighboring nudes this messages Are used to ensure no two devices are using the same IPV six address and verify neighbors reachability
Neighbor solicitation
This is the current Ethernet standard Evansville by DEC Intel Xerox before I AAA began to standardize ethernet
Ethernet 2
This is the upper portion of the data link layer that identifies the type of message and handles multiplexing flow and error control and reliability
LLC or logic link control sublayer
Lower portions datalink lawyer that identifies a destination sort MAC address includes message and provides check some in the frames trailer
Mac sublayer
Is largest size invites that routers in a message path will allow at the network layer
Maximum transmission unit or MTU
The Mac method used by nose for arbitration of the network is CSMA/CD or carrier sense multiple access with collision detection
