Configuring Routing
216
S3300 Smart Managed Pro Switch
Configure Router Discovery
The Router Discovery protocol is used by hosts to identify operational routers on the subnet.
Router discovery messages are of two types: router advertisements and router solicitations.
The protocol mandates that every router periodically advertise the IP addresses it is
associated with. Hosts listen for these advertisements and discover the IP addresses of
neighboring routers.
Use the Router Discovery Configuration screen to enter or change router discovery
parameters.
To configure the router discovery parameters:
1. Select Routing > Router Discovery.
2. Select the router interface for which data is to be configured.
To perform the same configuration on all interfaces, select the check box in the heading
row. To configure a single interface, select the check box associated with the interface.
The interface number displays in the Interface field in the table heading row.
3. From the Advertise Mode list, select Enable.
Router advertisements are transmitted from the selected interface.
4. In the Advertise Address field. specify the IP address to be used to advertise the router.
5. In the Maximum Advertise Interval field, specify the maximum time (in seconds) allowed
between router advertisements sent from the interface.
6. In the Minimum Advertise Interval field, specify the minimum time (in seconds) allowed
between router advertisements sent from the interface.
7. In the Advertise Lifetime field, specify the value (in seconds) to be used as the lifetime field
in router advertisements sent from the interface.
This is the maximum length of time that the advertised addresses are to be considered as
valid router addresses by hosts.
8. In the Preference Level field, specify the preference level of the router as a default router
relative to other routers on the same subnet.
Higher numbered addresses are preferred. You must enter an integer.
9. Click the Apply button.
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