Vlans Overview; Vlans And Port Vlan Id Numbers; Vlan Numbers - Lenovo RackSwitch G8264 Application Manual

VLANs Overview

VLANs and Port VLAN ID Numbers

VLAN Numbers

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G8264 Application Guide for ENOS 8.4
Setting up virtual LANs (VLANs) is a way to segment networks to increase
network flexibility without changing the physical network topology. With network
segmentation, each switch port connects to a segment that is a single broadcast
domain. When a switch port is configured to be a member of a VLAN, it is added
to a group of ports (workgroup) that belong to one broadcast domain.
Ports are grouped into broadcast domains by assigning them to the same VLAN.
Frames received in one VLAN can only be forwarded within that VLAN, and
multicast, broadcast, and unknown unicast frames are flooded only to ports in the
same VLAN.
The RackSwitch G8264 (G8264) supports jumbo frames with a Maximum
Transmission Unit (MTU) of 9,216 bytes. Within each frame, 18 bytes are reserved
for the Ethernet header and CRC trailer. The remaining space in the frame
comprise the packet, which includes the payload and any additional overhead,
such as 802.1q or VLAN tags. Jumbo frame support is automatic: it is enabled by
default, requires no manual configuration, and cannot be manually disabled.
The G8264 supports up to 4095 VLANs per switch. Each can be identified with any
number between 1 and 4094. VLAN 1 is the default VLAN for the data ports.
VLAN 4095 is used by the management network, which includes the management
port.
Use the following command to view VLAN information:
RS G8264# show vlan
VLAN Name Status Ports
­­­­ ­­­­­­­­­­­­­­­­­­­­­­­­ ­­­­­­ ­­­­­­­­­­­­­­­­­­­­­­­­­
1 Default VLAN ena 1­64
2 VLAN 2 dis empty
4095 Mgmt VLAN ena MGMT