Al momento de utilizar EIGRP Named, es necesario tener en cuenta que los parámetros que antes ingresabamos en diversos modos de configuración, ahora se realizan bajo el modo de protocolo, por lo tanto, es necesario tener en cuenta que dentro de EIGRP nombrado existen varios submodos, los cuales son:
-
- Modo de configuración de address-family
- Modo de configuración de interfáz en address-family
- Modo de configuración de topología en address-family
El primero es donde se definen los parámetros básicos del protocolo, y podemos encontrar comandos como:
- af-interface
- eigrp
- metric
- neighbor
- network
- topology
Por lo tanto, acá podemos activar el protocolo en las interfaces con el comando network, definir lo vecinos, la métrica y entrar a la subconfiguración de address-family interface y address-family topology.
R1(config)#router eigrp test R1(config-router)#address-family ipv4 unicast autonomous-system 10 R1(config-router-af)#? Address Family configuration commands: af-interface Enter Address Family interface configuration default Set a command to its defaults eigrp EIGRP Address Family specific commands exit-address-family Exit Address Family configuration mode help Description of the interactive help system maximum-prefix Maximum number of prefixes acceptable in aggregate metric Modify metrics and parameters for address advertisement neighbor Specify an IPv4 neighbor router network Enable routing on an IP network no Negate a command or set its defaults shutdown Shutdown address family timers Adjust peering based timers topology Topology configuration mode R1(config-router-af)# R1(config-router-af)#network 192.168.10.1 0.0.0.0 R1(config-router-af)#neighbor 192.168.10.2 f0/0 R1(config-router-af)#metric weights 0 1 0 1 0 0 0 R1(config-router-af)#eigrp router-id 1.1.1.1
En submodo de configuración de interfaz, encontramos:
- authentication
- bandwidth-percent
- hello-interval
- hold-time
- next-hop-self
- passive-interface
- split-horizon
- summary-address
R1(config-router-af)#af-interface default R1(config-router-af-interface)#passive-interface R1(config-router-af-interface)#exit-af-interface R1(config-router-af)#af-interface f0/0 R1(config-router-af-interface)#? Address Family Interfaces configuration commands: authentication authentication subcommands bandwidth-percent Set percentage of bandwidth percentage limit bfd Enable Bidirectional Forwarding Detection dampening-change Percent interface metric must change to cause update dampening-interval Time in seconds to check interface metrics default Set a command to its defaults exit-af-interface Exit from Address Family Interface configuration mode hello-interval Configures hello interval hold-time Configures hold time next-hop-self Configures EIGRP next-hop-self no Negate a command or set its defaults passive-interface Suppress address updates on an interface shutdown Disable Address-Family on interface split-horizon Perform split horizon summary-address Perform address summarization R1(config-router-af-interface)#no passive-interface R1(config-router-af-interface)#authentication mode hmac-sha-256 password R1(config-router-af-interface)#authentication key-chain key R1(config-router-af-interface)#no split-horizon R1(config-router-af-interface)#summary-address 10.10.0.0/16 R1(config-router-af-interface)#hello-interval 3 R1(config-router-af-interface)#hold-time 9
Como podemos apreciar, EIGRP Named soporta autenticación usando el hash SHA256, a diferencia del modo clásico, que solo soporta MD5, además, que para configurar el passive-interface en todas las interfaces, es necesario ingresar al submodo af-interfaces default.
En la configuración de topología podemos encontrar:
- auto-summary
- distance
- distribute-list
- offset-list
- redistribute
- variance
R1(config-router-af)#topology base R1(config-router-af-topology)#? Address Family Topology configuration commands: auto-summary Enable automatic network number summarization default Set a command to its defaults default-information Control distribution of default information default-metric Set metric of redistributed routes distance Define an administrative distance distribute-list Filter entries in eigrp updates eigrp EIGRP specific commands exit-af-topology Exit from Address Family Topology configuration mode maximum-paths Forward packets over multiple paths metric Modify metrics and parameters for advertisement no Negate a command or set its defaults offset-list Add or subtract offset from EIGRP metrics redistribute Redistribute IPv4 routes from another routing protocol snmp Modify snmp parameters summary-metric Specify summary to apply metric/filtering timers Adjust topology specific timers traffic-share How to compute traffic share over alternate paths variance Control load balancing variance R1(config-router-af-topology)#maximum-paths 20 R1(config-router-af-topology)#variance 2 R1(config-router-af-topology)#distance 80 172.16.0.0 0.0.0.255 R1(config-router-af-topology)#redistribute ospf 1 metric 1000 500 255 1 1500
