Cisco ASR 9000 Series Configuration Guide

PurposeCommand or Action
commit
Step 4
What to Do Next
Configure BFD dampening parameters to bring up the TE tunnel and to avoid signaling churn in the network.
Configuring BFD Dampening for TE Tunnels
When BFD session fails to come up, TE exponentially backs off using the failed path-option to avoid signaling
churn in the network.
Perform these steps to configure dampening intervals to bring the TE tunnel up.
Before You Begin
•
BFD must be enabled under MPLS TE tunnel interface.
•
BFD bring up timeout interval must be configured using the bfd bringup-timeout command.
SUMMARY STEPS
1.
configure
2.
interface tunnel-te interface-number
3.
bfd dampening initial-wait milliseconds
4.
bfd dampening maximum-wait milliseconds
5.
bfd dampening secondary-wait milliseconds
6.
commit
DETAILED STEPS
PurposeCommand or Action
configure
Step 1
Configures MPLS Traffic Engineering (MPLS TE) tunnel interface
and enters into MPLS TE tunnel interface configuration mode.
interface tunnel-te interface-number
Example:
RP/0/RSP0/CPU0:router(config)#interface
tunnel-te 65535
Step 2
Configures the initial delay interval before bringing up the tunnel.
bfd dampening initial-wait milliseconds
Step 3
Example:
RP/0/RSP0/CPU0:router(config-if)#bfd
dampening initial-wait 360000
The initial-wait bring up delay time interval range is 1 to 518400000
milliseconds. Default initial-wait interval is 16000 milliseconds.
This option brings up the TE tunnel with the previous
signaled bandwidth.
Note
Cisco ASR 9000 Series Aggregation Services Router Routing Configuration Guide, Release 5.1.x
224 OL-30423-03
Implementing BFD
Configuring BFD over MPLS Traffic Engineering LSPs

Cisco ASR 9000 Series Specifications

General

Brand	Cisco
Model	ASR 9000 Series
Category	Network Router
Language	English