Alcatel-Lucent 7750 SR OS - Manual (Page 257)

VRRP
7750 SR OS Router Configuration Guide Page 257
Priority Policy Route Unknown Event Commands
less-specific
Syntax [no] less-specific [allow-default]
Context config>vrrp>policy vrrp-policy-id>priority-event>route-unknown prefix/mask-length
Description This command allows a CIDR shortest match hit on a route prefix that contains the IP route prefix
associated with the route unknown priority event.
The less-specific command modifies the search parameters for the IP route prefix specified in the
route-unknown priority event. Specifying less-specific allows a CIDR shortest match hit on a route
prefix that contains the IP route prefix.
The less-specific command eases the RTM lookup criteria when searching for the prefix/mask-length.
When the route-unknown priority event sends the prefix to the RTM (as if it was a destination
lookup), the result route table prefix (if a result is found) is checked to see if it is an exact match or a
less specific match. The less-specific command enables a less specific route table prefix to match the
configured prefix. When less-specific is not specified, a less specific route table prefix fails to match
the configured prefix. The allow-default optional parameter extends the less-specific match to
include the default route (0.0.0.0).
The no form of the command prevents RTM lookup results that are less specific than the route prefix
from matching.
Default no less-specific — The route unknown priority events requires an exact prefix/mask match.
Parameters allow-default — When the allow-default parameter is specified with the less-specific command, an
RTM return of 0.0.0.0 matches the IP prefix. If less-specific is entered without the allow-default
parameter, a return of 0.0.0.0 will not match the IP prefix. To disable allow-default, but continue
to allow less-specific match operation, only enter the less-specific command (without the allow-
default parameter).
next-hop
Syntax [no] next-hop ip-address
Context config>vrrp>policy vrrp-policy-id>priority-event>route-unknown prefix/mask-length
Description This command adds an allowed next hop IP address to match the IP route prefix for a route-unknown
priority control event.
If the next-hop IP address does not match one of the defined ip-addr, the match is considered
unsuccessful and the route-unknown event transitions to the set state.
The next-hop command is optional. If no next-hop ip-addr commands are configured, the
comparison between the RTM prefix return and the route-unknown IP route prefix are not included
in the next hop information.