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xStack DES-3800 Series Layer 3 Stackable Fast Ethernet Managed Switch
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OSPF Global Settings
The OSPF Global Settings menu allows OSPF to be enabled or disabled on the Switch − without changing the Switch’s OSPF
configuration. To view the following window, click L3 Features > OSPF > OSPF Global Settings. To enable OSPF, first supply
an OSPF Route ID (see below), select Enabled from the State drop-down menu and click the Apply button.
Figure 8- 30. OSPF Global Settings window
The following parameters are used for general OSPF configuration:
Parameter Description
OSPF Route ID
A 32-bit number (in the same format as an IP address − xxx.xxx.xxx.xxx) that uniquely
identifies the Switch in the OSPF domain. It is common to assign the highest IP address
assigned to the Switch (router). In this case, it would be 10.53.13.189, but any unique 32-bit
number will do. If 0.0.0.0 is entered, the highest IP address assigned to the Switch will
become the OSPF Route ID.
Current Route ID
Displays the OSPF Route ID currently in use by the Switch. This Route ID is displayed as a
convenience to the user when changing the Switch’s OSPF Route ID.
ECMP
Use the drop-down menu to enable or disable the Equal Cost Multipath Protocol.
State
Allows OSPF to be enabled or disabled globally on the Switch without changing the OSPF
configuration.
OSPF Area Settings
This menu allows the configuration of OSPF Area IDs and to designate these areas as either Normal, Stub or NSSA. Normal
OSPF areas allow Link-State Database (LSDB) advertisements of routes to advertise to networks that are external to the area. Stub
areas do not allow LSDB advertisements of external routes. Stub areas use a default summary external route (0.0.0.0 or Area 0) to
reach external destinations. Not-So- Stubby-Area (NSSA) areas are similar to Stub areas, however they only allow a limited
exchange of external information across an NSSA area border, therefore reducing the amount of Link State Advertisements.
To set up an OSPF area configuration click Layer 3 Features > OSPF > OSPF Area Settings link to open the following dialog
box:
Figure 8- 31. OSPF Area Settings and Table window