Term
| What three Conditions must be met for EIGRP to establish a neighbor? |
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Definition
Hello or ACK recieved.
AS numbers match
Identical K values |
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Term
| When is the only time EIGRP advertises it's entire table? |
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Definition
| When it discovers a new neighbor. |
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Term
| What is an EIGRGP Topolgy table? |
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Definition
| It's where the entire neighbor routing table it stored in cache. |
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Term
| What is Feasible Distance? |
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Definition
| The best path to a remote network . This is the route that you will find in the routing table. |
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Term
| How is the Feasible Distance Calculated? |
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Definition
| Administrative distance + the metric the neighbor router reported. Displayed as the first number in brackets in the routing table |
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Term
| What is Advertised Distance? |
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Definition
| Displayed as the second number in brackets in the routing table. It is the metric of the remote network. |
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Term
| What is a feasible Successor? |
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Definition
| Considered as a backup route to a network. To be considered as a FS it must have a reported distance less that the FD. |
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Term
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Definition
| The best route to a remote network. Stored in the routing table. |
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Term
| What is RTP (Reliable Transport Protocol)? |
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Definition
| Used in EIGRP to manage communication between routers |
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Term
| What is reliable multicast? |
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Definition
| If a router does not get a reply from a neighbor through a multicast address of 224.0.0.10 it will send a unicast request up to 16 times before the route is considered dead. |
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Term
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Definition
| Used be EIGRP to select and maintain the best path to a network. |
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Term
| What command must be issued in order for EIGRP to support discontigous networks? |
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Definition
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Term
| What does EIGRP use to determine the best path? |
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Definition
| Bandwidth and Delay. It can also use Load Reliability and MTU |
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Term
| By default, how many paths can EIGRP load balance across? |
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Definition
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Term
| What is the command used to change how many lines EIGRP can load balance across? |
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Definition
router(config)#router eigrp 10
router(config-router)#maximum-paths <1-6> |
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Term
| By default, what is the maximum number of hops for EIGRP? |
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Definition
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Term
| What is the command used to change the maximum hops value in EIGRP? |
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Definition
| router(config-router)#metric maximum-hops <1-255> |
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Term
| What is the command used to show all the EIGRP neighbors |
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Definition
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Term
| what is the command to show the topology table? |
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Definition
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Term
| What does H represent in the routing table? |
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Definition
| The order in which the route was received |
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Term
| What does the uptime indicate in the routing table? |
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Definition
| how long the neighborship has been established |
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Term
| What does the SRTT indicate in the routing table? |
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Definition
| Smooth Round Trip Timer, how long it takes to go to this network and back. A router should recieve a mulitcast response by this time...if not it sends a unicast address |
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Term
| What does RTO indicate in the routing table? |
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Definition
| Retransmission timeout, Amount of time that EIGRP waits before retransmitting a packet. |
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Term
| What does P represent in the routing table? |
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Definition
| A route is in passive mode. This is good, it means the route is reachable. |
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Term
| What does A represent in the routing table? |
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Definition
| A route in active means that it is not reachable and the router is searching for it. |
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Term
| Which table shows the Successor and Feasibe Successors? |
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Definition
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Term
| How is the variance command used within EIGRP? |
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Definition
| Allows you to change what EIGRP Load balances across. Default value is one. If the value was set to 2 it would load balance across all link that is within two times the successor route. |
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Term
| How often is a multicast packet sent out in EIGRP |
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Definition
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Term
| What kind of protocol is OSPF? |
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Definition
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Term
| What is a backbone router? |
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Definition
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Term
| What is an Area Border Router? |
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Definition
| A router that borders area 0 and another router |
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Term
| What is a router ID used in OSPF? |
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Definition
| Is an IP Address used to identify the router. The ID is the highest used Lo0 ip address. If no Lo0 interface is configured, it uses the highest of physical interfaces. |
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Term
| How are Hello Packets used in OSPF? |
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Definition
| Hello Packets and LSA's build and maintain the topology table |
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Term
| What addresses is used in OSPF for Hello Packets? |
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Definition
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Term
| What is the Neighbor Database in OSPF? |
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Definition
| A list of all the OSPF routers that have received a hello packet. Includes information like Router ID and state. |
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Term
| What is the Topology Database in OSPF? |
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Definition
| Contains information received from LSA's for an area. This is used to perform Dikstra to determine the best path to a route. |
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Term
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Definition
| Link State Advertisement. Data packet that contains routing information. OSPF Router only shares LSA with routers it has formed an adjacency with. |
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Term
| What is a Designated Router? |
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Definition
| Elected whenever OSPF routers are connected to the same mulitcast network.All routers will form an adjacency with a DR. |
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Term
| How is a designated Router elected? |
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Definition
| Router with the highest priority. |
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Term
| What is a Backup Designated Router? |
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Definition
| A standby router for the DR |
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Term
| What is a type of a multicast netowrk? |
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Definition
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Term
| What is a type of non broadcast multi-access? (NBMA) |
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Definition
| Frame Relay, X.25, & ATM. |
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Term
| What is a Point to Point Network? |
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Definition
| Direct connection between two routers.Eliminates the need for DR and BDR. |
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Term
| What is a Point to Multipoint Network? |
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Definition
| A series of connectios between a single interface on one router and multiple destination routers. |
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Term
| How does OSPF Calculate a route? |
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Definition
| Cost which consists of every outgoing interface added together. |
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Term
| What command enables OSPF? |
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Definition
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Term
| What does the sh ip ospf command show? |
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Definition
| Information about OSPF processes running including Router ID's, LSA's, processes, ETC. |
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Term
| What does the sh ip ospf database command show? |
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Definition
| The number or routers within all the Area's. |
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Term
| What must OPSF routers agree on to become neighbors? |
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Definition
| Area ID, Authentication, Hello and Dead Intervals |
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Term
| What is a way to prevent a Router from being a DR or BDR? |
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Definition
int fa0/1
ip ospf priority <0-255> |
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Term
Summarize the following
23.1.2.128/29
23.1.2.136/30
23.1.2.140/30
23.1.2.144/30
23.1.2.148/30 |
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Definition
.128 1000 0000
.136 1000 1000
.140 1000 1100
.144 1001 0000
.148 1001 0100
Answer 23.1.2.128/27. First three bits are common. 24 + 3 = 27 |
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Term
What is the command to summarize the following address using EIGRP in AS 10?
192.168.10.64/27 |
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Definition
router(config-router)# no auto-summary
router(config)#int fa0
router(config-interface)#ip summary-address eigrp 10 192.168.10.64 255.255.255.224 |
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Term
What is the command to summarize the following address using OSPF in Area 1?
192.168.10.64/27 |
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Definition
| router(config-router)#area 1 range 192.168.10.64 255.255.255.224 |
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Term
| Where are summary routes configured for EIGRP? |
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Definition
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Term
| Where are summary routes configured for OSPF |
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Definition
| Within OSPF global configs. |
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Term
| What four routed protocols are supported by eigrp |
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Definition
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Term
| When is redistribution required for EIGRP |
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Definition
| When there is more than one EIGRP session |
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Term
| What type of EIGRP interface will neither send or receive Hello packets |
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Definition
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Term
| Which EIGRP information is stored in RAM and maintained through the use of Hello and update packets? |
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Definition
| Neighbor Table, Topology Table. |
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Term
| Where are EIGRP successor routes stored? |
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Definition
| In the routing table and topology table |
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Term
| Which command will display all the EIGRP FS routes known to a router? |
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Definition
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Term
| Which of the following network types have a designated router and a backup router assigned? |
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Definition
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Term
| With which network type will OSPF establish router adjaciencies but not perform the DR/BDR election process |
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Definition
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Term
| If routers in a single area are configured with the same priorit value, what value does a router use for the OSPF Router ID |
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Definition
| The highest IP Address of any physical interface. |
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