User Manual

Routing
269
M6100 Web Management User Guide
 Configure the Stub Area.
1. Enter the OSPF Area ID. An
Area ID is a 32-bit integer in dotted decimal format that
uniquely identifies the area to which a router interface connects.
2. Configure the Import Summary LSAs by selecting Enable or Disable from the list. If you
select Enable, summary LSAs will be imported into stub areas.
3. Configure the Default Cost by entering the metric value you want applied for the default
route advertised to the stub area. V
alid values range from 1 to 16,777,215.
4. Click Add to configure the area as a stub area.
5. Click Apply to send the updated configuration to the switch. Configuration changes take
ef
fect immediately.
6. Click Cancel to cancel the configuration on the screen and reset the data on the screen to
the latest value of the switch.
7. Click Delete to delete the stub area designation.
The area will be returned to normal state.
Table 101, OSPF Stub Area Configuration on page 269 describes the non-configurable data
that is displayed.
Table 101. OSPF Stub Area Configuration
Field Description
SPF Runs The number of times that the intra-area route table
has been calculated using this area's link-state
database.
This is typically done using Dijkstra's
algorithm.
Area Border Router Count The total number of area border routers reachable
within this area.
This is initially zero, and is
calculated in each SPF Pass.
Area LSA Count The total number of link-state advertisements in this
area's link-state database, excluding
AS External
LSAs.
Area LSA Checksum The 32-bit unsigned sum of the link-state
advertisements' LS checksums contained in this
area's link-state database.
This sum excludes
external (LS type 5) link-state advertisements. The
sum can be used to determine if there has been a
change in a router's link state database, and to
compare the link-state database of two routers.
Type of Service This field is the normal TOS associated with the stub
metric.