Alcatel-Lucent 7710 SR OS Configuration Manual page 308

Default
Parameters
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virtual router instances must be reevaluated. The events hold-set timer has no effect on the removal
procedure.
no route-unknown — No route unknown priority control events are defined for the priority control
event policy.
prefix — The IP prefix address to be monitored by the route unknown priority control event in dotted
decimal notation.
Values 0.0.0.0 — 255.255.255.255
mask-length — The subnet mask length expressed as a decimal integer associated with the IP prefix
defining the route prefix to be monitored by the route unknown priority control event.
Values
0 — 32
ip-address — The IP address of the host for which the specific event will monitor connectivity. The
ip-addr can only be monitored by a single event in this policy. The IP address can be monitored
by multiple VRRP priority control policies. The IP address can be used in one or multiple ping
requests. Each VRRP priority control host-unreachable and ping destined to the same ip-addr
is uniquely identified on a per message basis. Each session originates a unique identifier value
for the ICMP echo request messages it generates. This allows received ICMP echo reply
messages to be directed to the appropriate sending application.
Values
ip-prefix/mask:
ipv6-address/prefix:
ip-prefix a.b.c.d (host bits must be 0)
mask 0 — 32
ipv6-address x:x:x:x:x:x:x:x (eight 16-bit pieces)
x:x:x:x:x:x:d.d.d.d
x: [0..FFFF]H
prefix-length 1 — 128
7710 SR OS Router Configuration Guide