Cisco Exam 5 Flashcards
Max amount of vlans on sw
4096
Data Vlans
Separate user traffic
8021Q
places untagged traffic on native vlan
normal vlan range
0-1005, stored in switch flash memory vlan.dat
extended vlan range
1006-4094, stored in running config
DTP
auto creates trunks
Scalability for intervlan routing structures
MLS > ROAS > Legacy
DTP Settings
access ~ puts ports into no trunk
dynamic auto: puts port into can trunk mode
dynamic desirable: puts into looking to trunk mode
trunk: puts in trunk mode
DTP Table
ADTAC
Blue = Trunk
Purple = LC
White = Access
Packet Forwarding Types
Process Switching: CPU matches with routing table and send to all exit interfaces
Fast Switching: CPU matches with fast switching cache that has next hop information
Cisco Express Forwarding: FIB forwards
Router function and how
determines best path to forward and forwards.
Best path is most matching left ip address digits to destination
codes
identify how route was learned
child route
indented
parent route
no code or indent
AD
lower number = more trustworthy = used in routing table
eirgp
internal gateway protocol
bgp
external gateway protocol
dynamic routing characteristics
adaptable, scalable, insecure, uses resources
static routing charecteristics
more complex as network grows, inherent security, no resources.
How does dynamic routing determine best path
data structures
routing protocol messages
algorithms
Equal Cost Load Balancing
Router forwards packets to both paths if they have equal metrics
What are floating routes?
backup routes
Traceroute
shows each hop returning reply
show ip route
shows routing able