Table 5: Default Route Preferences - Alcatel-Lucent 7450 Configuration Manual

Router Global Commands
black-hole — Specifies the route is a black hole route. If the destination address on a packet matches
tag — Adds a 32-bit integer tag to the static route. The tag is used in route policies to control
validate-next-hop — This configuration option tracks the state of the next-hop in the IPv4 ARP

Table 5: Default Route Preferences

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The indirect keyword and the next-hop or black-hole keywords are mutually exclusive. If an
identical command is entered (with the exception of either the next-hop or black-hole
parameters), then this static route will be replaced with the newly entered command and unless
specified the respective defaults for preference and metric will be applied.
The ip-addr configured can be either on the network or the access side and is normally at least
one hop away from this node.
this static route, it will be silently discarded.
The black-hole keyword and the next-hop or indirect keywords are mutually exclusive. If an
identical command is entered (with the exception of either the next-hop or indirect parameters),
then this static route will be replaced with the newly entered command, and unless specified, the
respective defaults for preference and metric will be applied.
distribution of the route into other protocols.
cache or IPv6 Neighbor Cache. When the next-hop is not reachable and is removed from the
ARP or Neighbor Cache, the next-hop will no longer be considered valid. When the next-hop is
again reachable and present in the ARP/Neighbor Cache, the static route will be considered
valid.
Note: This feature is supported for directly connected next-hops only, and is exclusive with
indirect routes.
Label
Direct attached
Static-route
OSPF Internal routes
IS-IS level 1 internal
IS-IS level 2 internal
OSPF external
IS-IS level 1 external
IS-IS level 2 external
BGP
Default
5
Values 1 — 255
Preference Configurable
0 No
5 Yes
10 Yes
15 Yes
18 Yes
150 Yes
160 Yes
165 Yes
170 Yes
7450 ESS Router Configuration Guide