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Licensing Requirements and Limitations for VLAN Switch
Involved Network Elements
Other network elements are not required.
Licensing Requirements
The VLAN Switch feature is a basic feature of a switch and is not under license control.
Version Requirements
Table 6-3 Products and versions supporting VLAN Switch
Product |
Product Model |
Software Version |
|---|---|---|
S12700 |
S12708, S12712 |
V200R005C00, V200R006C00, V200R007C00, V200R007C20, V200R008C00, V200R009C00, V200R010C00, V200R011C10 |
S12710 |
V200R010C00, V200R011C10 |
|
S12704 |
V200R008C00, V200R009C00, V200R010C00, V200R011C10 |
Feature Limitations
- The source and destination interfaces specified in the vlan-switch command must be hybrid or trunk interfaces. These interfaces cannot be access interfaces or Eth-Trunk member interfaces.
- The VLANs used in the VLAN Switch feature cannot be created in the system view.
- When double-tagged VLAN Switch is configured, both inbound and outbound interfaces must be located on an X series card or non-X series card.
- If VLAN Switch is configured on the interface of a card (excluding the X series cards), the switch forwards all packets that match VLAN Switch entries, even if the switch is configured to discard the packets. For example, matching packets will be forwarded even in the following situations:
- The STP status of the interface is Blocking.
- The action is set to discard when the interface does not learn MAC address entries.
- The MAC address of packets is all 0s.
- The packets contain the blackhole MAC address.
- The VLANs used in QinQ cannot be used by the VLAN Switch feature.
- When an outer VLAN tag in double-tagged frames is used for VLAN stacking, VLAN mapping, or control VLAN, the VLAN tag cannot be used by VLAN Switch.
- On a ring network, packets matching VLAN Switch entries can pass through the interfaces blocked by loop prevention protocols. Consequently, broadcast storms may occur. Therefore, the VLAN Switch feature is not recommended for a ring network running a loop prevention protocol.
- SA cards on S series switches do not support stack-vlan.