139
Send Type The protocol used for traffic sent out this port:
RIP1 Broadcast: Route information is broadcast to other routers on
the network using RIPv1.
RIP2 Broadcast: Route information is broadcast to other routers on
the network using RIPv2.
RIP2 Multicast: Route information is multicast to other router s on
the network using RIPv2.
Do Not Send: The switch will passively monitor route information
advertised by other routers attached to the network.
Receive Type The routing protocol messages accepted on this port includes RIP1,
RIP2, RIP1 / RIP2, or Do Not Receive.
Default Metric A “metric” indicates the number of hops between the switch and the
destination network.
The “default metric” is used for the default route in RIP updates
originated on this interface. A value of zero indicates that no default
route should be originated; in this case, a default route via another
router may be propagated.
Range: 0-15
Poison
Reverse*
Directs routes back to an interface port from which they have been
acquired, but sets the distance vector metrics to infinity.
* This is a method of preventing routing information from looping back to the source.
Note that Split Horizon is also enabled on this switch for this purpose. (See “RIP and
RIP-2 Dynamic Routing Protocols” on chapter 4.)
Configuring OSPF
Open Shortest Path First is more suited for large area networks which experience
frequent changes in the links. It also allows for subnets. This protocol actively tests the
status of each link to its neighbors to generate a shortest-path tree, and builds a routing
table based on this information. (See “OSPFv2 Dynamic Routing Protocol” on chapter 4.)
OSPF then utilizes IP multicast to propagate routing information. A separate routing
area scheme is also used to further reduce the amount of routing traffic (chapter 3
‘’Router ID”).
You can use the following menu to specify the area identifier or other key routing
parameters as shown in the following table.