mpls te bandwidth change thresholds

Function

The mpls te bandwidth change thresholds command sets the percentage threshold of physical link bandwidth used by an MPLS TE tunnel for flooding link information.

The undo mpls te bandwidth change thresholds command restores the default percentage threshold.

By default, if the ratio of the reserved (or released) bandwidth for a tunnel to the remaining bandwidth in a Traffic Engineering DataBase (TEDB) is greater than or equal to 10%, an IGP floods link information and CSPF updates the TEDB.

Format

mpls te bandwidth change thresholds up percent-up

mpls te bandwidth change thresholds down percent-down

undo mpls te bandwidth change thresholds up

undo mpls te bandwidth change thresholds down

Parameters

Parameter	Description	Value
down percent-down	Indicates the flooding percentage threshold of the bandwidth used by an MPLS TE tunnel. If the ratio of the bandwidth used by an MPLS TE tunnel to the remaining link bandwidth in a TEDB is greater than or equal to the threshold, an IGP floods link information, and CSPF updates the TEDB.	The value is an integer ranging from 0 to 100.
up percent-up	Indicates the flooding percentage threshold of the bandwidth released by an MPLS TE tunnel. If the ratio of the bandwidth released by an MPLS TE tunnel to the remaining link bandwidth in a TEDB is greater than or equal to the threshold, an IGP floods link information, and CSPF updates the TEDB.	The value is an integer ranging from 0 to 100. The default value is 10.

Parameter

Description

Value

down percent-down

Indicates the flooding percentage threshold of the bandwidth used by an MPLS TE tunnel. If the ratio of the bandwidth used by an MPLS TE tunnel to the remaining link bandwidth in a TEDB is greater than or equal to the threshold, an IGP floods link information, and CSPF updates the TEDB.

The value is an integer ranging from 0 to 100.

up percent-up

Indicates the flooding percentage threshold of the bandwidth released by an MPLS TE tunnel. If the ratio of the bandwidth released by an MPLS TE tunnel to the remaining link bandwidth in a TEDB is greater than or equal to the threshold, an IGP floods link information, and CSPF updates the TEDB.

The value is an integer ranging from 0 to 100. The default value is 10.

Views

100ge sub-interface view, 100GE interface view, 10GE sub-interface view, 10GE interface view, 25GE sub-interface view, 25GE interface view, 400GE sub-interface view, 400GE interface view, 40GE sub-interface view, 40GE interface view, 50GE sub-interface view, 50GE interface view, Eth-Trunk sub-interface view, Eth-Trunk interface view, GE optical interface view, GE sub-interface view, GE electrical interface view, GMPLS-UNI interface view, Tunnel interface view, XGE sub-interface view, XGE interface view

Default Level

2: Configuration level

Task Name and Operations

Task Name	Operations
mpls-te	write

Usage Guidelines

Usage Scenario

If the bandwidth changes slightly, flooding the bandwidth wastes network resources. Assume the bandwidth of a link is 100 Mbit/s. If 100 TE tunnels each with the bandwidth of 1 Mbit/s are set up, the system floods link information 100 times. If the flooding threshold is set to 10%, no bandwidth is flooded when tunnels 1 to 9 are created. After tunnel 10 is created, the bandwidth of tunnels 1 to 10 (10 Mbit/s in total) is flooded. Similarly, no bandwidth is flooded when tunnels 11 to 18 are created. After tunnel 19 is created, the bandwidth of tunnels 11 to 19 is flooded, and so on.

Example

# Configure GE0/1/0 to flood link information if the link bandwidth released for an MPLS TE tunnel exceeds 25% of the overall bandwidth, or the bandwidth reserved by an MPLS TE tunnel exceeds 10% of the overall bandwidth.

<HUAWEI> system-view
[~HUAWEI] mpls
[*HUAWEI-mpls] mpls te
[*HUAWEI-mpls] quit
[*HUAWEI] interface GigabitEthernet0/1/0
[*HUAWEI-GigabitEthernet0/1/0] mpls
[*HUAWEI-GigabitEthernet0/1/0] mpls te
[*HUAWEI-GigabitEthernet0/1/0] mpls te bandwidth change thresholds up 25
[*HUAWEI-GigabitEthernet0/1/0] mpls te bandwidth change thresholds down 10