Mapping B-Vlans To An Ect Algorithm - HP 5920 series Configuration Manual

Step
3. Set a port-specific link metric
value.
Setting the global link metric value
Step
1. Enter system view.
2. Enter SPBM view.
3. Set a global SPBM link metric
value.
Configuring the bandwidth reference for automatic link metric calculation
ISIS-SPB automatically calculates a link metric value for an interface if neither global link metric value nor
interface-specific link metric value is configured.
The following is the calculation formula:
Link metric value=(Reference bandwidth/Real interface rate)x10
The value range for the link metric value is 1 to 16777214.
To configure the bandwidth reference for automatic link metric calculation:
Step
1. Enter system view.
2. Enter SPBM view.
3. Configure the reference
bandwidth for automatic link
metric calculation.

Mapping B-VLANs to an ECT algorithm

An ECT algorithm represents a set of tie-breakers for calculating SPTs.
To improve link efficiency in an SPBM network, you can distribute B-VLAN traffic along different paths by
mapping B-VLANs to different ECT algorithms.
To ensure correct SPT calculation for a B-VLAN, the B-VLAN to ECT algorithm mappings must be the same
across the SPBM network for B-VLANs.
For more information about the ECT algorithms, see IEEE 802.1aq SPB.
To map a list of B-VLANs to an ECT algorithm:
Step
1. Enter system view.
Command
spbm cost value
Command
system-view
spbm
circuit-cost value
Command
system-view
spbm
bandwidth-reference value
Command
system-view
20
Remarks
By default, automatic link metric
calculation applies.
Remarks
N/A
N/A
By default, no global SPBM link
metric value is configured.
Remarks
N/A
N/A
For Release 2307, the default
bandwidth reference is 100 Mbps.
For Release 2310 and later, the
default bandwidth reference is
40000 Mbps.
Remarks
N/A