C
HAPTER
45
| IP Routing Commands
Routing Information Protocol (RIP)
– 1039 –
COMMAND MODE
Interface Configuration (VLAN)
DEFAULT SETTING
split-horizon poisoned
COMMAND USAGE
â—† Split horizon never propagates routes back to an interface from which
they have been acquired.
â—† Poison reverse propagates routes back to an interface port from which
they have been acquired, but sets the distance-vector metrics to
infinity. (This provides faster convergence.)
â—† If split-horizon is disabled with the no rip ip split-horizon command,
and a loop occurs, the hop count for a route may be gradually
incremented to infinity (that is, 16) before the route is deemed
unreachable.
EXAMPLE
This example propagates routes back to the source using poison-reverse.
Console(config)#interface vlan 1
Console(config-if)#ip split-horizon poison-reverse
Console(config-if)#
clear ip rip route This command clears specified data from the RIP routing table.
SYNTAX
clear ip rip route {ip-address netmask | all | connected | ospf | rip
| static}
ip-address - IP address of a route entry.
netmask - Network mask for the route. This mask identifies the
network address bits used for the associated routing entries.
all - Deletes all entries from the routing table.
connected - Deletes all currently connected entries.
ospf - Deletes all entries learned through the Open Shortest Path
First routing protocol.
rip - Deletes all entries learned through the Routing Information
Protocol.
static - Deletes all static entries.
DEFAULT SETTING
None
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