User Manual

OSPF and OSPFv3
432
M6100, M5300, and M7100 Series Managed Switches
The value is the period of time that an elected translator continues to perform its duties
after it determines that its translator status was deposed by another router. The valid
range is 0 to 3600.
13. In the Redistribute Mode field, select to Enable or Disable.
This configures the NSSA ABR so that learned external routes are redistributed to the
NSSA.
14. Click the Add button.
The area is configured as an NSSA area.
15. To delete the NSSA area designation, click the Delete button.
The area is returned to normal state.
16. Click the Apply button.
The updated configuration is sent to the switch. Configuration changes take effect
immediately.
The following table describes the nonconfigurable data that is displayed.
Table 160. Advanced OSPFv3 NSSA Area Configuration
Field Description
SPF Runs The number of times that the intra-area route table was 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' LSA
checksums contained in this area's link state database. This sum
excludes external (LSA type 5) link state advertisements. The sum can
be used to determine if there was a change in a router's link state
database, and to compare the link state database of two routers.
Translator State The field tells you if and how the NSSA border router translates Type 7
into Type 5. Possible values are as follows:
• Enabled. The NSSA border router's translator role was set to
always.
• Elected. The candidate NSSA border router is translating Type 7
LSAs into Type 5.
• Disabled. The candidate NSSA border router is NOT translating
Type 7 LSAs into Type 5.