HP MSR2000/3000/4000 Router Series MPLS Configuration Guide
60
Ste
p
Command
Remarks
5. (Optional.) Immediately
reoptimize all MPLS TE tunnels
that are enabled with the
tunnel reoptimization function.
mpls te reoptimization N/A
Configuring TE flooding thresholds and interval
When the bandwidth of an MPLS TE link changes, IGP floods the new bandwidth information, so the
ingress node can use CSPF to recalculate the path.
To prevent such recalculations from consuming too many resources, you can configure IGP to flood only
significant bandwidth changes by setting the following flooding thresholds:
• Up threshold—When the percentage of the reservable-bandwidth increase to the maximum
reservable bandwidth reaches the threshold, IGP floods the TE information.
• Down threshold—When the percentage of the reservable-bandwidth decrease to the maximum
reservable bandwidth reaches the threshold, IGP floods the TE information.
You can also configure the flooding interval at which bandwidth changes that cannot trigger immediate
flooding are flooded.
This task can be performed on all nodes that the MPLS TE tunnel traverses.
To configure TE flooding thresholds and the flooding interval:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Configure the up/down
threshold.
mpls te bandwidth change
thresholds { down | up } percent
By default, the up/down threshold
is 10% of the link reservable
bandwidth.
4. Return to system view.
quit N/A
5. Enter MPLS TE view.
mpls te N/A
6. Configure the flooding
interval.
link-management
periodic-flooding timer interval
By default, the flooding interval is
180 seconds.
Controlling MPLS TE tunnel setup
Before performing the configuration tasks in this section, be aware of each configuration objective and
its impact on your device.
Perform the tasks in this section on the ingress node of the MPLS TE tunnel.
Enabling route and label recording
Perform this task to record the nodes that an MPLS TE tunnel traverses and the label assigned by each
node. The recorded information helps you know about the path used by the MPLS TE tunnel and the label
distribution information, and when the tunnel fails, it helps you locate the fault.
To enable route and label recording: