Enterasys X-Pedition XSR, Cli Reference Manual

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OSPF Commands
5-90 Configuring the Internet Protocol
Figure 5-1 Area Virtual Link Example
auto-virtual-link
This command automatically creates virtual links. Refer to the
area-virtual-link
command for
more related information.
Syntax
auto-virtual-link
Syntax
This command’s no form negates the automatic creation of a virtual link:
no auto-virtual-link
Mode
OSPF Router configuration:
XSR(config-router)#
Example
XSR(config-router)#auto-virtual-link
database-overflow
This command dynamically limits the size of OSPF Link ‐ State database overflow, a condition
where the XSR is unable to maintain the database in its entirety. Typically, database overflow
occurs when a router imports a large number of external, Type 5 LSA routes into OSPF. This
command lets you control other LSA types as well: 1 ‐ 4, 7, and 10.
Usually, this problem can be averted by proper configuration of OSPF routers into stub areas or
NSSAs, since AS ‐ external LSAs are omitted from this type of Link ‐ State databases. But, in the
event of an unexpected database overflow, there is insufficient time to perform this type of
isolation.
Syntax
database-overflow [LSA type][option]
LSA Type:
ABR1 ABR2
Area 0.0.0.0
Area 2 Area 3
Eth 1
virtual link
Serial 1/1
Eth 1
Serial 1/0
192.16.33.2
172.16.150.1
192.16.33.1
172.15.0.1
asbr-summary
AS Border Router Summary LSA (Type 4).
external
AS External Area LSA (Type 5).