Specifications

ip rsvp signalling hello refresh interval
MP-112
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
ip rsvp signalling hello refresh interval
To configure the Resource Reservation Protocol (RSVP) traffic engineering (TE) hello refresh interval,
use the ip rsvp signalling hello refresh interval command in interface configuration mode. To set the
refresh interval to its default value, use the no form of this command.
ip rsvp signalling hello [fas
t-reroute] refresh interval interval-value
no ip rsvp signalling hello [fast
-reroute] refresh interval
Syntax Description
Command Default The default frequency at
which a node sends hello messages to a neighbor is 200 msec.
Command Modes Interface configuration
Command History
Usage Guidelines You can configure the hello request interval on a per-interface basis. A node periodically generates a
h
ello message containing a Hello Request object for each neighbor whose status is being tracked. The
frequency of those hello messages is determined by the hello interval.
If you issue the ip
rsvp signalling hello refresh interval command without the optional fast-reroute
keyword, the command applies to Fast Reroute hellos. This command is provided for backward
compatibility; however, we recommend that you use the ip rsvp signalling hello fast-reroute refresh
interval command.
fast-reroute (Optional) Initiates Fast Reroute capability.
interval-value Frequency, in milliseconds (msec), at which a node sends hello messages to
a
neighbor. Valid values are from 10 to 30000 msec.
Note Values below the default of 200 msec are not recommended,
because they can cause RSVP Hellos to falsely detect a neighbor
down event and unecessarily trigger Fast ReRoute.
Release Modification
12.0(22)S This command was introduced.
12.0(29)S The optional fa
st-reroute keyword was added.
12.2(18)SXD1 This command was integrated into Cisco IOS Release 12.2(18)SXD1.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2(31)SB2 This command was integrated into Cisco IOS Release 12.2(31)SB2.
12.4(20)T This command was integrated into Cisco IOS Release 12.4(20)T.