Enterasys Networks X-Pedition XSR CLI - Manual (Page 166)

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).