Interconnecting Lans Flashcards
Bridge
Lay 2 device that uses MAC address to forward data packets.
Bridging Table
MAC address and port where address was obtained
ARP Cache
Temporary storage of MAC addresses recently contacted
Transparent Bridge
Interconnects two LANs running the same type of protocol
Translation Bridge
Interconnects two LANs operating different networking protocols.
Switch
Layer 2 device that uses MAC or Ethernet address to forward data packets to a specific host.
Managed Switch
Switch that allows network administrator to monitor, configure, and manage features such as who can access the LAN via the switch.
Aging time
Length of time a MAC address remains assigned to a switch port.
CAM
Content Addressable Memory
Where switch stores MAC addresses of connected devices.
Flooding
Switch transmits packets to all switch ports except from where packet was received.
Auto-negotiation Protocol
Enables Ethernet equipment to automate many installation steps such as selection of full or half-duplex.
ARP
Address Resolution Protocol
Maps an IP address to its MAC address
Protocol used by ping command
ICMP
Cut-through
Switch forwards a data packet to its destiantion as soon as the MAC address has been read.
Store-and-Forward
Switch receives the entire frame before forwarding to its destination. Often includes error checking.
Error Threshold
Point where number of errors in data packet triggers switch from cut-through mode to store-and-forward.
Dynamic Assignment
MAC address assigned to a port when connected to a switch
Static Assignment
MAC address manually assigned to a port on a switch that does not expire.
Secure Address
Only the MAC address assigned to the switch port will function.
Isolating the Collision Domains
Network is broken into segments
Fast-forward
Form of cut-through switching where the packet is sent as soon as MAC address is extracted
Fragment-free
Form of cut-through switching where fragment collisions are filtered out
Fragment Collisions
Collisions that occur within the first 64 bytes of the data packet
Adaptive Cut-through
Combination of store-and-forward & cut-through switching.
MLS
Multilayer Switch
Operate at Layer 2 and 3 of OSI model.
Have wire speed routing
