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65 Cards in this Set

  • Front
  • Back
RIPv2 Administrative Distance
RIPv2 Administrative Distance
Internal BGP Administrative Distance
External EIGRP Admin Distance
IS-IS Admin Distance
OSPF Admin Distance
IGRP Admin Distance
Internal EIGRP Admin Distance
External BGP Admin Distance
EIGRP summary route Admin Distance
Static Admin Distance
Connected Admin Distance
RIPv2 Metric
Hop Count
EIGRP Metric
Bandwidth, Delay, Reliability, Load (only Bandwidth and Delay used by default)
OSPF Metric
Cost (Bandwidth)
STP Port Costs
10mbps = 100, 100mbps = 19, 1gbps = 4, 10 gbps =2
RIPv2 Multicast Address
OSPF Multicast Address,
EIGRP Multicast Address
STP Time to Convergence
50 seconds
STP Max Age
20 seconds (10 x the hello counter)
STP Hello Counter
2 seconds
STP Forward Delay
15 seconds
How does OSPF select a Router ID?
1. The value of the router-id OSPF subcommand / 2. The highest active loopback address / 3. The highest nonloopback address
Link State Update packet (used for sending Link State Updates in OSPF)
Steps to becoming OSPF Neighbors
DOWN - the routers do not know about each other / INIT - an initial HELLO has made the routers aware of each other / 2-WAY - The routers believe that all pertinent information matches and that they should become neighbors and exchange LSDBs / FULL - Process complete, LSDBs match
OSPF Hello Interval
(GET A NUMBER) how often OSPF neighbors send HELLO packets to each other
OSPF Dead Interval
4 x the Hello Interval, how long an OSPF router will go without a HELLO before declaring a neighbor down
What two circumstances causes LSAs to be sent in OSPF?
LSAs are sent every 30 minutes regardless of changes, LSAs are also sent with any topology change.
Designated Router & Backup Designated Router
In OSPF on a multi-access (Ethernet) network, one router is selected as the DR, which forms full adjacencies with all other routers on the multi-access network segment. The BDR exists only to take over if the DR fails. Routers in the multi-access segment will not form full adjacencies with any routers except the DR.
What must match for OSPF routers to become neighbors?
Hello & Dead Timers
Area Border Router - An OSPF router that has interfaces connected to the backbone area (Area 0) and at least one other area
Backbone Router
An OSPF router that exists entirely in Area 0
Internal Router
An OSPF router that exists entirely in an area other than Area 0
A set of routers and links that share an LSDB
LSA Type 1
Describes an individual OSPF Router
LSA Type 2
Describes a network and its DR and BDR
LSA Type 3
Describes a subnet in another area (providing a router to another area of the OSPF network)
configuration register to skip startup config and boot IOS
Command to change OSPF reference bandwidth
config-router# auto-cost reference-bandwidth
EIGRP Hold Down Timer
3 x the Hello Timer
EIGRP Hello Timer
5 seconds
EIGRP Convergence Process
1. Routers exchange Hellos to establish adjacency and update neighbor tables / 2. Routers exchange full routing info and update topology tables / 3. Routers choose best routes and update the routing table / 4. When topology changes occur, routers respond with partial updates and reconverge on new info
Components of the EIGRP Composite Metric
(Bandwidth), (Delay) reliability and load () = on by default
Neighboring router used for packet forwarding (least cost router to destination net)
Feasible Distance
The lowest calculated metric to reach the destination net
Feasible Successor
A neighbor that has a loop free backup path to the same net as the successor, while satisfying the Feasibility Condition
Advertised or Reported Distance
The feasible distance reported by a neighbor
Feasibility Condition
A neighbor's Reported Distance must be less than the local router's FD to same destination
EIGRP Active State
A network is in Active state when there are no feasible successor routes available and the router is ACTIVELY querying neighbors seeking a route.
Hot Standby Router Protocol (Cisco Proprietary)
Virtual Router Redundancy Protocol (IETF Standard)
Gateway Load Balancing Protocol (Cisco Proprietary)
Active Virtual Gateway - the virtual IP of a GLBP group
LacP commands
PagP commands
What interface settings must match to bundle ports in an EtherChannel?
Speed, Duplex, Operational access or trunking state, Access Vlan/Allowed Vlans on trunk, (Trunk) Native Vlan, STP settings
Does subinterface number (ie Fa0/0.10) have to match the VLAN number?
No, but it is recommended
Commmand to enable trunking on a router subinterface
encapsulation dot1q [native vlan]
What OSPF settings must match for an OPSF adjacency to form?
The interfaces are not on the same network, OSPF network types do not match, OSPF Hello/Dead timers do not match,Interface to neighbor is passive,missing or incorrect OSPF network command, Authentication misconfigured
T1 Bandwidth
1.544 Mbps

From the "show frame-relay pvc" command, whar are the three likely PVC STATUS messages and what do they mean?

+ ACTIVE: the PVC is operational and can transmit data.

+ INACTIVE: the connection from the local router to the switch is working, but the connection to the remote router is not available

+ DELETED: the PVC is not present and no LMI information is being received from the Frame Relay switch


Hot Standby Router Protocol

All routers are part of a "Standby Group", besides the physical IP of the interface, a virtual IP is also configured. All routers in the group must have the same virtual IP.


Open standard version of HSRP


Gateway Load Balancing Protocol

AVG = Active Virtual Gateway (Active router)

AVF = Active Virtual Forwarder (Standby routers)