H3C Technologies H3C S12500 Series Switches - Manual (Page 26)

18
Creating an SPB VSI
SPBM uses a unique I-SID to identify an SPB VSI. An SPB VSI's I-SID must be the same across the SPBM
network.
I-SID 255 is reserved for the fast channel. You cannot associate any Ethernet service instance with the VSI
that uses I-SID 255.
To use the fast-channel feature, you must create a VSI and assign I-SID 255 to the VSI.
To create an SPB VSI:
Step Command Remarks
1. Enter system view. system-view N/A
2. Create a VSI. vsi vsi-name By default, no VSIs exist.
3. Assign an SPB I-SID to the
VSI.
spb i-sid i-sid N/A
Assigning a B-VLAN to an SPB VSI
For an SPB VSI, you must specify the same I-SID and B-VLAN across all BEBs and BCBs. You can assign
only one B-VLAN to an SPB VSI, but different SPB VSIs can use the same B-VLAN.
To assign a B-VLAN to an SPB VSI:
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter VSI view. vsi vsi-name N/A
3. Enter SPB I-SID view. spb i-sid i-sid N/A
4. Assign a B-VLAN to the SPB VSI. b-vlan vlan-id
By default, an SPB VSI does not have a
B-VLAN.
Configuring Ethernet service instances on BEBs
For a BEB to identify C-VLANs that must be extended across sites, you must configure Ethernet service
instances on its customer network ports to map C-VLANs to SPB VSIs.
When you configure Ethernet service instances, follow these restrictions and guidelines:
• An SPB VSI can be mapped to multiple Ethernet service instances on the same port or different
ports.
• For correct traffic processing, do not use the outer VLAN specified with the encapsulation command
to provide any other services, including Layer 2 and Layer 3 services.
NOTE:
The outer VLAN refers to the C-VLAN for a single-tagged frame and the S-VLAN for a double-tagged
frame.