CCNA Routing and Switching Portable Command Guide: Enhanced Interior Gateway Routing Protocol (EIGRP)
- Configuring Enhanced Interior Gateway Routing Protocol (EIGRP) / EIGRP Auto-Summarization
- EIGRP Manual Summarization / Passive EIGRP Interfaces / Equal-Cost Load Balancing: Maximum Paths / Unequal-Cost Load Balancing: Variance
- Bandwidth Use / Authentication
- Verifying EIGRP / Troubleshooting EIGRP
- Configuration Example: EIGRP
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This chapter provides information and commands concerning the following topics:
- Configuring Enhanced Interior Gateway Routing Protocol (EIGRP)
- EIGRP auto-summarization
- EIGRP manual summarization
- Passive EIGRP interfaces
- Equal-cost load balancing: Maximum paths
- Unequal-cost load balancing: variance
- Bandwidth use
- Authentication
- Verifying EIGRP
- Troubleshooting EIGRP
- Configuration example: EIGRP
Configuring Enhanced Interior Gateway Routing Protocol (EIGRP)
Router(config)#router |
Turns on the EIGRP process. 100 is the autonomous system (AS) number, which can be a number between 1 and 65,535. |
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All routers in the same autonomous system must use the same autonomous system number. |
Router(config-router)#network 10.0.0.0 |
Specifies which network to advertise in EIGRP. |
Router(config-if)#bandwidth x |
Sets the bandwidth of this interface to x kilobits to allow EIGRP to make a better metric calculation. |
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NOTE This command is entered at the interface command prompt (config-if) and not in the router process prompt (config-router). The setting can differ for each interface to which it is applied. |
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TIP The bandwidth command is used for metric calculations only. It does not change interface performance. |
Router(config-router)#eigrp log-neighbor-changes |
Changes with neighbors will be displayed. |
Router(config-router)#no |
Removes the network from the EIGRP process. |
Router(config)#no router eigrp 100 |
Disables routing process 100 and removes the entire EIGRP configuration from the running configuration. |
Router(config-router)#network 10.0.0.0 0.255.255.255 |
Identifies which interfaces or networks to include in EIGRP. Interfaces must be configured with addresses that fall within the wildcard mask range of the network statement. A network mask can also be used here. |
Router(config-router)#metric weights tos k1 k2 k3 k4 k5 |
Changes the default k values used in metric calculation. These are the default values: tos=0, k1=1, k2=0, k3=1, k4=0, k5=0 |
EIGRP Auto-Summarization
Router(config-router) |
Enables auto-summarization for the EIGRP process. |
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NOTE The behavior of the auto-summary command is disabled by default of Cisco IOS Software Versions 15 and later. Earlier software generally has automatic summarization enabled by default. |
Router(config-router) |
Turns off the auto-summarization feature. |