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Module 7: Distance Vector Routing Protocols
 
  Command Command Description Command Syntax
7.2.2 router rip To configure the Routing Information Protocol (RIP) routing process, use the router rip global configuration command. router rip
  network network-number To specify a list of networks for a Routing Information Protocol (RIP), RIP version 2, or Interior Gateway Routing Protocol (IGRP) routing process, use this form of the network router configuration command. network network-address
7.2.3 ip classless At times the router might receive packets destined for a subnet of a network that has no network default route. To have the Cisco IOS software forward such packets to the best supernet route possible, use the ip classless global configuration command. To disable this feature, use the no form of this command. When this feature is disabled, the software discards the packets when a router receives packets for a subnet that numerically falls within its subnetwork addressing scheme. ip classless
  no ip classless At times the router might receive packets destined for a subnet of a network that has no network default route. To have the Cisco IOS software forward such packets to the best supernet route possible, use the ip classless global configuration command. To disable this feature, use the no form of this command. When this feature is disabled, the software discards the packets when a router receives packets for a subnet that numerically falls within its subnetwork addressing scheme. no ip classless
7.2.4 ip split-horizon On by default, stops split horizon from occurring. ip split-horizon
  no ip split- horizon Allows routers to send updates out the same interface from which they came. no ip split-horizon
  timers basic Changes the holddown timer for routing updates. timers basic update invalid holddown flush [sleeptime]
  update-timer seconds Changes the update timer for the routing updates. update-timer seconds
  passive-interface The passive-interface command keeps a router from sending routing updates out an interface. passive-interface type number
7.2.5 show ip route Use the show ip route EXEC command to display the current state of the routing table. show ip route [address [mask] [longer-prefixes]] | [protocol [process-id]] | [list access-list-number | access-list-name]
  show ip protocols To display the parameters and current state of the active routing protocol process, use the show ip protocols EXEC command. show ip protocols
  show interfaces interface To display statistics for all interfaces configured on the router or access server, use the show interfaces command in privileged EXEC mode. show interfaces interface
  show ip interface interface To display the usability status of interfaces configured for IP, use the show ip interface EXEC command. show ip interface interface-type number
7.2.6 debug ip rip This command displays RIP transactions. debug ip rip
  show ip rip database Displays the contents of the RIP private database. show ip rip database [ip -address {mask}]
  Show ip protocols {summary} To display the parameters and current state of the active routing protocol process, use the show ip protocols EXEC command. show ip protocols {summary}
  debug ip rip {events} This command displays RIP transactions. debug ip rip
  Show ip interface brief To display a brief summary of the information and status for an IP address, use the show ip interface brief command in EXEC mode. show ip interface brief
7.2.7 passive- interface The passive-interface command keeps a router from sending routing updates out an interface. passive-interface type number
7.2.9 maximum-paths [number] To control the maximum number of parallel routes an IP routing protocol can support, use the maximum-paths command in address family or router configuration mode. maximum-paths maximum
7.2.10 redistribute static To redistribute routes from one routing domain into another routing domain, use the redistribute router configuration command. To disable redistribution, use the no form of this command. redistribute protocol [process-id] [metric metric-value] [metric-type type-value] [match {internal | external 1 | external 2}] [tag tag-value] [route map map-tag] [weight weight] [subnets]
7.3.5 router igrp as-number To configure the Interior Gateway Routing Protocol (IGRP) routing process, use the router igrp global configuration command. To shut down an IGRP routing process, use the no form of this command. router igrp autonomous-system
  no router igrp as-number To configure the Interior Gateway Routing Protocol (IGRP) routing process, use the router igrp global configuration command. To shut down an IGRP routing process, use the no form of this command. no router igrp autonomous-system
  network To specify a list of networks for a Routing Information Protocol (RIP), RIP version 2, or Interior Gateway Routing Protocol (IGRP) routing process, use this form of the network router configuration command. To remove an entry, use the no form of this command. network network-address
  no network To specify a list of networks for a Routing Information Protocol (RIP), RIP version 2, or Interior Gateway Routing Protocol (IGRP) routing process, use this form of the network router configuration command. To remove an entry, use the no form of this command. no network network-address
7.3.6 default-information originate To generate a default route into RIP, use the default-information originate router configuration command. To disable this feature, use the no form of this command. default-information originate [route-map mapname]
  ip default-network To select a network as a candidate route for computing the gateway of last resort, use the ip default-network global configuration command. To remove a route, use the no form of this command. ip default-network network-number
  clear ip route * This command removes a route from the IP routing table clear ip route {network [mask] | * }
7.3.7 show running-config interface interface Shows the running configuration for the specified interface. show running-config interface interface
  show running-config | begin interface interface Begins the running configuration output at the specified interface. show running-config | begin interface interface
  show running config | begin igrp Shows the running configuration beginning at the specified routing protocol. show running config | begin igrp
7.3.8 debug ip igrp events Shows all igrp events that are occurring debug ip igrp events
  debug ip igrp transactions Shows igrp updates that are occurring between IGRP routers debug ip igrp transactions
  bandwidth To set a bandwidth value for an interface, use the bandwidth command in interface configuration mode. The bandwidth command sets an informational parameter to communicate only the current bandwidth to the higher-level protocols. bandwidth kilobits
  no ip route-cache Use the ip route-cache interface configuration command to control the use of high-speed switching caches for IP routing. To disable any of these switching modes, use the no form of this command. no ip route-cache
  variance To control load balancing in an EIGRP-based internetwork, use the variance router configuration command. The variance value determines whether IGRP will accept unequal-cost routes. An IGRP router will only accept routes equal to the local best metric for the destination multiplied by the variance value. To reset the variance to the default value, use the no form of this command. variance multiplier
  debug ip packet Use the debug ip packet EXEC command to display general IP debugging information. debug ip packet
  undebug all Turns off all debugging. undebug all
  ip route-cache Use the ip route-cache interface configuration command to control the use of high-speed switching caches for IP routing. To disable any of these switching modes, use the no form of this command. ip route-cache
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