Specifications

Chapter 2. IBM System Networking Switch 10Gb Ethernet switch features 57
򐂰 Ethernet type: Consists of a 4-digit (16 bit) hex value that defines the Ethernet type. You
can use common Ethernet protocol values, or define your own values. Here are examples
of common Ethernet protocol values:
– IPv4 = 0800
– IPv6 = 86dd
– ARP = 0806
Port-based versus protocol-based VLANs
Each VLAN supports both port-based and protocol-based association, as follows:
򐂰 The default VLAN configuration is port-based. All data ports are members of VLAN 1, with
no PVLAN association.
򐂰 When you add ports to a PVLAN, the ports become members of both the port-based
VLAN and the PVLAN. For example, if you add port 1 to PVLAN 1 on VLAN 2, the port
also becomes a member of VLAN 2.
򐂰 When you delete a PVLAN, its member ports remain members of the port-based VLAN.
For example, if you delete PVLAN 1 from VLAN 2, port 1 remains a member of VLAN 2.
򐂰 When you delete a port from a VLAN, the port is deleted from all corresponding PVLANs.
PVLAN priority levels
You can assign each PVLAN a priority value of 0 - 7, used for Quality of Service (QoS).
PVLAN priority takes precedence over a port’s configured priority level. If no priority level is
configured for the PVLAN (priority = 0), each port’s priority is used (if configured).
All member ports of a PVLAN have the same PVLAN priority level.
PVLAN tagging
When PVLAN tagging is enabled, the switch tags frames that match the PVLAN protocol. For
more information about tagging, see “VLAN tagging” on page 52.
Untagged ports must have PVLAN tagging disabled. Tagged ports can have PVLAN tagging
either enabled or disabled.
PVLAN tagging has higher precedence than port-based tagging. If a port is tag enabled, and
the port is a member of a PVLAN, the PVLAN tags egress frames that match the
PVLAN protocol.