5.1 Flashcards
(24 cards)
What is the info stored in each routing table entry? (4)
Protocol (what kind of info)
Destination (what network it’s going to)
Interface (which port it left)
Gateway / Next Hop (Next Router’s IP address)
What are 4 categories of a Routing Table Entry
Direct Connect
Remote connect
Host Route
Default Route
What is a Direct Connect Route?
For subnets which router has local interface
What is a Remote Connect Route?
Subnets and IP networks not directly attached
what is a Host Connect Route?
Sent to specific IP address
What is a Default Connect Route?
Used when exact matches for a network/host route not found
What is a Static Connect Route?
Entry set by Admin
How does IPv4 record fragmentation? (3)
ID, Flags, Fragmentation Offset
How does IPv6 handle fragmentation?
MTU discovery and largest possible MTU
Should hosts with same subnet mask or IP networks be separated or not separated by a router?
Not separated
Should hosts with different subnets or IP networks be separated or not separated by a router?
Separated
Why do you want to create a virtual interface to configure the router?
Because there might be hardware faults but this overcomes that defect
What are two things to do when you set up a router?
Apply an IP configuration
Configure routing protocols / static routes
What does “show ip route” do?
Shows you active routing table with destination, gateway, and interface.
What do these letter codes mean?
C and S?
C = Connected
S = Static
What do these letter codes mean?
R and B?
R = RIP = Routing Information Protocol
B = BGP = Border Gateway Protocol
What do these letter codes mean?
D and O
D = EIGRP = Enhanced Interior Gateway Routing Protocol
O = OSPF Open Shortest Path First
What does “show arp” or “show ip arp” do?
Shows you ARP cache of MAC addresses
What does “route print” do?
Shows routing table
What are the Linux commands to show routing table?
ip route show
What does traceroute let you do?
Test whole path between 2 notes
What protocol does traceroute use?
UDB 33434 with TTL 1
What does traceroute -6 OR traceroute6 do?
Lets you use traceroute for IPv6 networks
What do these tracert switches do?
-d?
-h?
-d = suppress name resolution
-h = maximum hops
