H3C Technologies H3C S12500 Series Switches - Manual (Page 31)

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Step Command Remarks
3. Map B-VLANs to an ECT
algorithm.
ect ect-index b-vlan vlan-id-list
By default, all B-VLANs are mapped
to ECT algorithm 1.
Performing ECT migration for an SPB VSI
To move traffic from an overloaded path to a path that has less traffic, you can change B-VLAN to ECT
algorithm mappings by using the ect command or by performing ECT migration. ECT migration provides
more granular traffic control than the ect command.
• Using the ect command, you can move all traffic of a B-VLAN from one path to another. The
B-VLAN's traffic is disrupted before you complete B-VLAN to ECT algorithm remapping across the
SPBM network.
• Using ECT migration, you can move traffic by I-SID without traffic loss.
To perform ECT migration:
1. On all BEBs and BCBs, create a new B-VLAN, assign the B-VLAN to MSTI 4092, and assign the
provider network port to the B-VLAN:
Step Command Remarks
1. Enter system view. system-view N/A
2. (Optional.) Add a new B-VLAN. vlan
Skip this step if you choose a
VLAN that already exists.
3. Return to the system view quit N/A
4. Enter MST region view. stp region-configuration N/A
5. Assign the VLAN to MSTI 4092. instance instance-id vlan
vlan-list
The value for the instance-id
argument must be 4092.
6. Activate the MST region
configuration.
active region-configuration N/A
7. Return to system view. quit N/A
8. Enter interface range view.
interface range { interface-type
interface-number [ to
interface-type
interface-number ] } &<1-5>
Specify all provider network
ports.
9. Assign all provider network
ports to the VLAN.
• Assign trunk ports to the
VLAN:
port trunk permit vlan
{ vlan-id-list | all }
• Assign hybrid ports to the
VLAN:
port hybrid vlan vlan-id-list
tagged
N/A
10. Return to system view. quit N/A
2. On all BEBs and BCBs, map the new B-VLAN to a different ECT algorithm than the old B-VLAN: