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GS748T Smart Switch 
6. In the Advertise Lifetime field, enter 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. The allowed 
range for this field is 4 to 9000, i.e., the configured “Maximum Advertise Interval” to 9000.
7. 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. 
8. Click Cancel
 to cancel the configuration on the screen and reset the data on the screen to 
the latest value of the switch.
9. If
 you change any of the settings on the page, click Apply to send the updated configuration 
to the switch. Configuration changes take effect immediately.
Configuring and Viewing Routes
From the Routing Table page, you can configure static and default routes and view the 
routes that the GS748T has already learned. 
To display the page click the Rou
ting  Routing Table link.
To configure a route:
1. In the Route
 Type field, specify whether the route is to be a Default route or a Static 
route. If creating a default route, you need to specify only the next hop IP address; 
otherwise, you need to specify each field. 
2. In
 the Network Address field, specify the IP route prefix for the destination. To create a 
route, a valid routing interface must exist and the next hop IP Address must be on the same 
network as the routing interface. 
3. In
 the Subnet Mask field, specify the network mask to indicate the portion of the IP address 
that identifies the attached network.