Question | Answer |
What does RIP stand for? | Routing Information Protocol |
What kind of routing protocol is RIP? | Distance-vector |
When does RIP send information about its routing table? | RIP sends an update every 30 seconds, and it sends the entire table. |
What does distance-vector mean? | It means that the protocol relies on hop count to pick the best path to a remote network. 15 is the max by default, and 16 hops results in it being dropped. |
Does RIP support VLSM? | Version 1 does not (classful routing), but Version 2 does support VLSM (classless routing) |
How do you configure RIP? | In global configuration mode:
router rip
network 192.168.115.0
version 2
no auto-summary |
What does "no auto-summary" mean? | When you enable this feature it will keep your routing protocol from summarizing networks. Summarizing could cause communication problems, especially with discontiguous networks. |
How do you verify that your protocol is working? | show ip route
show protocols
These commands will give you printouts of routes learned by your routing protocols |
What are three benefits of OSPF? | Speedy convergence
Less overhead
Quarantine unstable networks to a single area |
What must be configured properly for OSPF to form an adjacency? | Hello and Dead intervals must match
Area I.D.
Stub area flag
Authentication (password, if you're using one) |
What is the OSPF point-to-point address? | 224.0.0.5 |
What is the OSPF broadcast address? | 224.0.0.6 |
When you are assigning a process I.D. to OSPF what is the range of numbers you can use? | 1-65,535 |
What does the process I.D. mean when you're configuring it for routing protocols? | Nothing, it's arbitrary |
How do you configure OSPF? | In global configuration mode:
router ospf 1
network 192.168.115.0 0.0.0.255 area 0 |
When you are configuring routing protocols what does the area number mean? | It is the area that routers will use to identify which "group" they belong to. In order for routers to share routing tables they must have the same area number |
When assigning an area number what are your options? | 0-4.2 billion. You can also label an area using an ip address format. |
When you are configuring routing protocols what command should you use to see what addresses are connected to your router? | show ip interface brief |
What routing protocols are classless? | RIPv2, OSPF, and EIGRP |
What must be configured properly for EIGRP to form an adjacency? | Identical K values
AS numbers must match
Hello or ack must be received |
What is advertised (reported) distance? | Metric of a distant network that is learned from a neighbor. |
What is feasible distance? | Best metric to reach a distant network and includes the metric to the neighbor that advertises that route. |
EIGRP configuration | (config)#router eigrp 25
(config-router)#network 192.168.0.0 0.0.0.255
(config-router)#no auto-summary
(config-router)#passive-interface fa0/1 |
EIGRP K values metric | K1=bandwidth, K2=load (utilization on path), K3=delay, K4=Reliability, K5=MTU. How to set back to default:
(config-router)#metric weights 010100
(config-router)#do show ip protocols |
EIGRP Hop Count | Default is 4 links, but can be increased to 255.
(config)#router eigrp 25
(config)#metric maximum-hops 255 |
EIGRP Bandwidth & Delay | Default BW 1544, DLY 20000. If you need to set these to default use the following:
(config-if)#no bandwidth
(config-if)#no delay |