3Com OfficeConnect 3C100XF, Cli User'S Manual

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Set Commands 12-19
As activated by this command, routing is appropriate on a LAN segment where the
default route gateway is
not used because the OfficeConnect Gateway
dynamically adds discovered hosts to its Routing Table. Since the default is none ,
routing is not activated until you select ripv1 or ripv2 .
You must disable the IP network before setting these parameters. Use the disable
ip network command or the set ip network command followed by the
reconfigure ip network command. By issuing a show ip network <name>
settings command, you can determine from the Reconfigure Needed: field
whether a reconfigure was done.
RIP Policies - The following RIP policies are supported by the IP route:
Send Default - disabled by default, causes router to advertise itself as the
default router.
Send Routes - enabled by default. Tells RIP to advertise (broadcast) its routes
on the network every 30 seconds - is standard for a gateway router.
Send Subnets - disabled by default. If this flag is on, only routes with the
same network and with subnets on the same network are sent out the
interface.
Accept Default - disabled by default. Determines whether router accepts
default route advertisements.
Split Horizon - enabled by default. Records the interface over which it
received a particular route and does not propagate its information about that
route back over the same interface. This prevents network loops.
Poison Reverse - disabled by default. Routes that were excluded due to the
use of split horizon are instead included with infinite cost (16). The system
continues to broadcast the route, but with an infinite cost.
In order to perform poison reverse, you must also enable split horizon.
Flash Update - enabled by default. It is also known as “triggered update”,
meaning routes that have their metrics modified will be advertised immediately,
instead of waiting for the next scheduled broadcast.
The following flags are for backward compatibility with RIP version 1 when RIP
version 2 is selected as the routing protocol.
routing_metric Sets routing metric (number of hops between the OfficeConnect
Gateway and its destination) for use on IP network. Metric is set
when the
routing_protocol is configured as ripv1 or ripv2 . When
routing_protocol is changed to none, the metric is changed back to
the default value of 1. A metric value of
16 effectively shuts off RIP
on that interface. The configured metric value is globally saved and
retrieved after system reboot when the
save all command is
issued.
A metric is considered the cost to use an interface with lower
metrics corresponding to better, more direct routes. When
employing primary and backup routers with RIP enabled, you can
set a low metric on the primary router interface (eth:1) and a
higher metric on the backup router interface (eth:1). Range
1-16 .
The default is 1 .
routing_protocol Sets routing protocol to be used on IP network. Choices are: none,
ripv1 or ripv2. The default is none .