Configure SPBM Layer 2 VSN
SPBM supports Layer 2 Virtual Service Network (VSN) functionality where customer VLANs (C-VLANs) are bridged over the SPBM core infrastructure.
At the BEBs, customer VLANs (C-VLAN) are mapped to I-SIDs based on the local service provisioning. Outgoing frames are encapsulated in a MAC-in-MAC header, and then forwarded across the core to the far-end BEB, which strips off the encapsulation and forwards the frame to the destination network based on the I-SID-to-C-VLAN provisioning.
Before you begin
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You must configure the required SPBM and IS-IS infrastructure, which includes the creation of SPBM BVLANs.
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You must create the customer VLANs (C-VLANs) and add slots/ports.
Procedure
Example
Switch:1>enable Switch:1#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch:1(config)#vlan i-sid 10 100 Switch:1(config)#show vlan i-sid
Switch:1>show vlan i-sid =============================================================================== Vlan I-SID =============================================================================== VLAN_ID I-SID I-SID NAME ------------------------------------------------------------------------------- 1 10 100 Hospital-Server-10 90 1000 ISID-1000 3 out of 3 Total Num of Vlans displayed
Variable Definitions
The following table defines parameters for the vlan i-sid command.
Variable |
Value |
---|---|
<1-4059> |
Specifies the primary VLAN ID. Specifies the VLAN ID in the range of 1 to 4059. By default, VLAN IDs 1 to 4059 are configurable and the system reserves VLAN IDs 4060 to 4094 for internal use. On switches that support the vrf-scaling and spbm-config-mode boot configuration flags, if you enable these flags, the system also reserves VLAN IDs 3500 to 3998. VLAN ID 1 is the default VLAN and you cannot create or delete VLAN ID 1. |
<0-16777215> |
Specifies the service instance identifier (I-SID). Note:
The switch reserves I-SID 0x00ffffff. The switch uses this I-SID to advertise the virtual B-MAC in a SMLT dual-homing environment. The platform clears the receive and transmit bit of this I-SID, therefore I-SID 0x00ffffff cannot be used for any other service. This value is the same for the primary and secondary VLANs. |
force |
Specifies the software must replace the existing VLAN-to-I-SID mapping, if one exists. |