| 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 | Shows the networks to be advertised. |
| Router(config-router)# no auto-summary | Given a hierarchical addressing design, disables the automatic summarization to the Internet IANA network address. |
| Router(config-if)# ip summary-address eigrp autonomous-system-number address mask | Enables you to summarize the networks manually, having disabled automatic summarization. |
| Router(config-router)# eigrp stub [ receive-only connected static summary ] | Used on small-capacity routers in a hub-and-spoke WAN environment. The router has no other neighbors and accesses the network through a distribution layer router. Only a small routing table is required at the stub router, which is provided with a default route to the advertising ABR. |
| Router(config-if)# bandwidth speed-of-line | Issued at the interface level and a logical construct to determine the real bandwidth manually. This command is used mainly on serial lines. Bandwidth will influence some routing decisions and dial-on-demand implementations . |
| Router(config-if)# ip bandwidth-percent eigrp autonomous-system-number percent | Enables you to change the bandwidth percentage. EIGRP, by default, will only take up to 50% of bandwidth. |
| Router(config-router)# variance multiplier -number | Allows unequal-cost paths to load balance. Paths included in the equation will send a proportional amount of traffic across the unequal links. |
| Router(config-if)# ip hello-interval eigrp autonomous-system-number seconds | Changes how often the Hello is sent out of an interface. This is used to tune the network by increasing the frequency and thus reducing convergence timers. |
| Router(config-if)# ip hold-time eigrp autonomous-system-number seconds | This defines how long the router believes its neighbor to be alive without hearing a Hello from the neighbor. By default, it is three times that of the Hello timer. Remember that if the Hello timer is changed, the hold timer is not automatically changed, but must be changed manually. |
| 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 the EIGRP traffic passing through the router. |
| Router# debug eigrp packet | Shows the packets sent and received by the router. The packet types to be monitored can be selected. Up to 11 types are available. |
| Router# debug eigrp neighbors | Shows the Hello packets sent and received by the router and the neighbors discovered by this process. |
| Router# debug ip eigrp route | The default if the command debug ip eigrp is issued. Shows dynamic changes made to the routing table. |
| Router# debug ip eigrp summary | Shows the process taken when a summary (manual or auto) is changed on the router. |
