03 Apr 2011 - Lab-Rat
Every protocol has a specific command to manually summarize routes. Some of them have multiple ways depending on what type of route you are summarizing. Here’s a brief list of how that works.
| {Router(config-router)# summary-address *{{ip-address mask} | {prefix mask}} [not-advertise][tag tag]* |
| Router(config-router)# area area-id range *ip-address mask [advertise | not-advertise][cost cost]* |
Router(config-if)# ip summary-address eigrp as-number ip-address mask [admin-distance] [leak-map name]
Router(config-if)# ip summary-address rip ip-address ip-network-mask
*Note: RIP does not generate a aroute to Null0 automatically- beware route feedback.
Router(config-router)# aggregate-address address mask [as-set]