H3C Technologies H3C S6800 Series Switches - Manual (Page 85)

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Step Command Remarks
3. Enable tunnel reoptimization. mpls te reoptimization [ frequency
seconds ]
By default, tunnel reoptimization is
disabled.
4. Return to user view. return N/A
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:
Step 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.