Vlan Topologies And Design Considerations; Vlan Configuration Rules - Lenovo CN4093 Application Manual

VLAN Topologies and Design Considerations

VLAN Configuration Rules

© Copyright Lenovo 2015
 By default, the Lenovo N/OS software is configured so that tagging is disabled on
all external ports and on all internal ports.
 By default, the Lenovo N/OS software is configured so that all internal ports are
members of VLAN 1.
 By default, the Lenovo N/OS software is configured so that the management port
is a member of the default management VLAN 4095.
 Multiple management VLANs can be configured on the switch, in addition to the
default VLAN 4095, using the following commands:
CN 4093(config)# vlan <VLAN ID (1-4094)>
CN 4093(config-vlan)# management
When using Spanning Tree, STG 2-128 may contain only one VLAN unless

Multiple Spanning-Tree Protocol (MSTP) mode is used. With MSTP mode,
STG 1 to 32 can include multiple VLANs.
VLANs operate according to specific configuration rules. When creating VLANs,
consider the following rules that determine how the configured VLAN reacts in
any network topology:
 All ports involved in aggregation and port mirroring must have the same VLAN
configuration. If a port is on a LAG with a mirroring port, the VLAN configura-
tion cannot be changed. For more information about aggregation, see
"Configuring a Static LAG" on page
 If a port is configured for port mirroring, the port's VLAN membership cannot be
changed. For more information on configuring port mirroring, see
"Port Mirroring" on page
 Management VLANs must contain the management port, and can include one or
more internal ports (INTx). External ports (EXTx) cannot be members of any
management VLAN.
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Chapter 8: VLANs