User Manual

Routing
268
M6100 Web Management User Guide
Table 100. OSPF Common Area Configuration
Field Description
External Routing A definition of the router's capabilities for the area,
including whether or not
AS-external-LSAs are
flooded into/throughout the area. If the area is a stub
area, then these are the possible options for which
you may configure the external routing capability,
otherwise the only option is Import External LSAs.
• Import External LSAs — Import and propagate
external LSAs.
• Import No LSAs — Do not import and propagate
external LSAs.
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.
Flood List Length This is the number of LSAs on this area's flood list.
Import Summary LSAs The summary LSAs will be enabled/disabled
imported into this area.
OSPF Stub Area Configuration
 To display the OSPF Stub Area Configuration page, click Routing > OSPF > Advanced >
Stub Area Configuration. The following page is displayed.