Specifications

mpls traffic-eng topology holddown sigerr
MP-353
Cisco IOS Multiprotocol Label Switching Command Reference
January 2010
mpls traffic-eng topology holddown sigerr
To specify the amount of time that a router ignores a link in its traffic engineering topology database in
tunnel path Constrained Shortest Path First (CSPF) computations following a traffic engineering tunnel
er
ror on the link, use the mpls traffic-eng topology holddown sigerr command in global configuration
mode. To disable the time set to ignore a ink following a traffic engineering tunnel error on the link, use
the no form of this command.
mpls traffic-eng topology holddown sigerr se
conds
no mpls traffic-eng topology holddown sigerr
Syntax Description
Command Default If you do not specify this command, tunnel path calculations ignore a link on which there is a traffic
en
gineering error until either 10 seconds have elapsed or a topology update is received from the Interior
G
ateway Protocol (IGP).
Command Modes Global configuration
Command History
Usage Guidelines A router that is at the headend for traffic engineering tunnels might receive a Resource Reservation
P
rotocol (RSVP) No Route error message for an existing tunnel or for one being signaled due to the
f
ailure of a link the tunnel traffic traverses before the router receives a topology update from the IGP
routing protocol announcing that the link is down. In such a case, the headend router ignores the link in
subsequent tunnel path calculations to avoid generating paths that include the link and are likely to fail
when signaled. The link is ignored until the router receives a topology update from its IGP or a link
hold-down timeout occurs. You can use the mpls traffic-eng topology holddown sigerr command to
change the link hold-down time from its 10-second default value.
seconds Length of time (in seconds) a router should ignore a link during tunnel path
c
alculations following a traffic engineering tunnel error on the link. The
value can be from 0 to 300.
Release Modification
12.0(14)ST This command was introduced.
12.2(11)S This command was integrated into Cisco IOS Release 12.2(11)S.
12.0(22)S This command was integrated into Cisco IOS Release 12.0(22)S.
12.2(28)SB This command was integrated into Cisco IOS Release 12.2(28)SB.
12.2(33)SRA This command was integrated into Cisco IOS Release 12.2(33)SRA.
12.2SX This command is supported in the Cisco IOS Release 12.2SX train. Support
i
n a specific 12.2SX release of this train depends on your feature set,
platform, and platform hardware.
12.4(20)T This command was integrated into Cisco IOS Release 12.4(20)T.