Supermicro SuperBlade SBM-GEM-X2C+, Руководство пользователя

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6-5
Chapter 6: 1-Gb Ethernet Switch Firmware
Port VLAN ID (PVID)
The PVID is used in a port-based VLAN to allow assigning a port to belong to a VLAN. A
VLAN can then be configured to be a group of member ports. This switch is an 802.1q
tag-aware switch. If no VLANs are defined on the switch, every port will be assigned to a
default VLAN which has VLAN ID 1. Each port will have PVID equal to 1.
If incoming frames are untagged, they will be tagged with the default PVID of the port on
which they are received. The destination MAC address of the frame and the PVID will be
used for forwarding decisions. An incoming tagged frame will be kept intact. The switch
will use the VID in the frame and the destination MAC address for the forwarding
decision. Look for a more detailed description in the VLAN section.
Jumbo Frames Support
To modify the jumbo frames support for all of ports, click on the E
DIT OF
J
UMBO
F
RAME
setting (as shown in Figure 6-3 ) to link to the J
UMBO
F
RAME
S
ETTING
screen
( Figure 6-4 ). Click the E
NABLE
J
UMBO
F
RAME
check box to enable/disable jumbo frame
support.
Figure 6-4. Jumbo Frame Setting Screen
When a jumbo frame is enabled, the maximum length of a frame that can be forwarded
by a switch is
9216 . When the jumbo frame is disabled, the maximum length of a frame
that can be forwarded by a switch is 1518 .
Port Configuration
To modify the configuration of each port, click on the port number in the PORT S
TATUS
screen (see Figure 6-3 ). The P
ORT
C
ONFIGURATION
screen appears ( Figure 6-5 ). It is
used to define speed and duplexing for a port when auto-negotiation is off. When
auto-negotiation is on, this data is negotiated with the link partner.