Alcatel-Lucent 7210 SAS-X - Page 823

Virtual Private Routed Network Services
7210 SAS-X OS Services Guide Page 823
blackhole-aggregate
Syntax [no] blackhole-aggregate
Context config>service>vprn>ospf>area
Description This command installs a low priority blackhole route for the entire aggregate. Exisiting routes that
make up the aggregate will have a higher priority and only the components of the range for which no
route exists are blackholed.
It is possible that when performing area aggregation, addresses may be included in the range for
which no actual route exists. This can cause routing loops. To avoid this problem configure the
blackhole aggregate option.
The no form of this command removes this option.
Default blackhole-aggregate
interface
Syntax [no] interface ip-int-name [secondary]
Context config>service>vprn>ospf>area
Description This command creates a context to configure an OSPF interface.
By default interfaces are not activated in any interior gateway protocol such as OSPF unless explicitly
configured.
The no form of the command deletes the OSPF interface configuration for this interface. The
shutdown command in the config>router>ospf>interface context can be used to disable an
interface without removing the configuration for the interface.
Default no interface — No OSPF interfaces are defined.
Parameters ip-int-name — The IP interface name. Interface names must be unique within the group of defined IP
interfaces for config router interface and config service vprn interface commands. An
interface name cannot be in the form of an IP address. Interface names can be any string up to 32
characters long composed of printable, 7-bit ASCII characters. If the string contains special
characters (#, $, spaces, etc.), the entire string must be enclosed within double quotes.
If the IP interface name does not exist or does not have an IP address configured an error
message will be returned.
If the IP interface exists in a different area it will be moved to this area.
secondary — Allows multiple secondary adjacencies to be established over a single IP interface.