NETGEAR M4350-24F4V 24-Port 10G SFP+ Managed AV Network Switch User Manual
Page 462
•
Enable: The preference rules prevent routing loops when AS-external-LSAs for
the same destination originate from different areas. All routers or switches in the
OSPF domain must be configured the same way. Enable is the default setting.
For more information, see section 16.4.1 of the OSPF-2 standard (RFC 2328):
• Disable: If all OSPF routers are capable of operating according to the standard
described in RFC 2328, disable RFC 1583 Compatibility.
10. From the Opaque LSA Status menu, select how the switch treats opaque LSAs:
•
Enable: The switch stores opaque LSAs. An opaque LSA is used for flooding
user-defined information within an OSPF router domain.
•
Disable: The switch does not store opaque LSAs.
11. In the Exit Overflow Interval field, set how many seconds OSPF must wait before
leaving an overflow state.
When the number of nondefault external LSAs exceeds a limit, the switch enters an
overflow state in which OSPF cannot originate nondefault external LSAs. (For more
information, see RFC 1765.)
If the number of seconds is 0 (the default setting), OSPF does not leave the overflow
state until you disable and reenable OSPF. The maximum value can be 2,147,483,647
seconds.
12. In the SPF Delay Time field, set how many seconds OSPF must wait before starting
a new Shortest Path First (SPF) calculation.
The SPF delay time is the number of seconds from when OSPF receives a topology
change to the start of the next SPF calculation. The delay can be from 0 to 65535
seconds. The default is 5 seconds. A value of 0 means that there is no delay that is,
the SPF calculation is started when a topology change occurs.
13. In the SPF Hold Time field, set how many seconds OSPF must wait before between
two consecutive SPF calculations.
The SPF hold time is the minimum time in seconds between two consecutive SPF
calculations. The hold time can be from 0 to 65,535 seconds. The default is 10
seconds. A value of 0 means that there is no delay; that is, two SPF calculations can
be done, one immediately after the other.
14. In the External LSDB Limit field, set the limit of the external link-state database
(LSDB) for OSPF.
When the number of nondefault AS-external-LSAs in a router’s link state database
reaches the external LSDB’s limit, the router enters the overflow state. The router
cannot hold more none-default AS-external-LSAs than the maximum number that
the external LSDB can hold. The external LSDB’s limit must be set identically in all
routers that are attached to the OSPF backbone or any regular OSPF area. The limit
Main User Manual
462
Configure OSPF and OSPFv3
Fully Managed Switches M4350 Series Main User Manual