Foundation Summary
The Foundation Summary provides a convenient review of many key concepts in this chapter. If you are already comfortable with the topics in this chapter, this summary might help you recall a few details. If you just read this chapter, this review should help solidify some key facts. If you are doing your final prep before the exam, the following tables are a convenient way to review the day before the exam.
Table 4-9 summarizes the commands covered in this chapter.
| Command | Function |
|---|---|
| Router(config)#router eigrp autonomous-system-number | Starts the EIGRP processes on the router with the specified autonomous system number. |
| Router(config-router)#network network-number [wildcard-mask] | Advertises the networks that match the network mask. |
| Router(config-router)#no auto-summary | Disables automatic summarization. |
| Router(config-if)#ip summary-address eigrp autonomous-system-number address mask | Enables manual summarization. |
| Router(config-router)#eigrp stub [receive-only | connected | static | summary] | Used on single-neighbor routers in a hub-and-spoke environment. Minimizes local routing table and advertises local subnets to core. |
| Router(config-if)#bandwidth speed-of-line | Identifies bandwidth on interfaces where router cannot automatically determine them. Used primarily on serial lines. |
| Router(config-if)#ip bandwidth-percent eigrp autonomous-system-number percent | EIGRP, by default, will take only 50% of bandwidth for routing protocol traffic. Allows adjustment of that percentage. |
| Router(config-router)#variance multiplier | Allows unequal-cost paths to proportionally load share. |
| Router(config-if)#ip hello-interval eigrp autonomous-system-number seconds | Changes hello interval. May be used to lengthen interval (reducing overhead) or to shorten the interval (decreasing convergence time). |
| Router(config-if)#ip hold-time eigrp autonomous-system-number seconds | Defines how long to wait without hearing a hello from a neighbor before declaring it dead. By default, it is three times the length of the hello-interval. |
| Router#show ip eigrp neighbors | Displays information drawn from the neighbor table. |
| Router#show ip eigrp topology | Displays information drawn from the topology table. |
| Router#show ip eigrp traffic | Shows statistics about the EIGRP traffic reaching the router. |
| Router#debug eigrp packet | Shows EIGRP packets sent and received. |
| Router#debug ip eigrp neighbors | Shows the hello packets sent and received by the router and the neighbors discovered by this process. |
| Router#debug ip eigrp summary | Shows when a summary is changed on the router. |
