Managing networking resources
Creating VLANs and ports on the Cisco Nexus 5548UP
Switch
Use this procedure to create VLANs and ports on the Cisco Nexus 5548UP Switch.
About this task
VLANs on the Cisco Nexus 5548UP Switches allow network administrators to create logical broadcast
domains that can span multiple switches, regardless of their locations. They allow groups of users to be
logically grouped without being physically located in the same place. For more information on configuring
VLANs on Cisco Nexus 5548UP Switches, refer to the
Cisco Nexus 5000 Series NX-OS Software
Configuration Guide
Before you begin
VTP mode is OFF. VTP BPDUs are dropped on all interfaces of a Cisco Nexus 5000 Series Switch, which
partitions VTP domains if other switches have VTP turned on.
About this task
The Cisco Nexus 5000 Series Switch supports VLAN numbers 1 to 4094 in compliance with the IEEE
802.1Q standard. These VLANs are organized into ranges. You use each range slightly differently. The
switch is physically limited in the number of VLANs it can support. The hardware also shares this
available range with its VSANs. For details of the number of supported VLANs and VSANs, see the
"
Configuration Limits
" section of the
Cisco Nexus 5000 Series NX-OS Software Configuration Guide
. The
following table details the VLAN ranges:
VLAN numbers
Range
Use
1
Normal
Cisco default. You can use this VLAN, but you cannot modify or delete it.
2 to 1005
Normal
You can create, use, modify, and delete these VLANs.
1006 to 4094
Extended
You can create, name, and use these VLANs. You cannot change the
following parameters:
•
State is always active.
•
VLAN is always enabled. You cannot shut down these VLANs.
3968 to 4047 and
4094
Internally
allocated
These 80 VLANs, plus VLAN 4094, are for internal use. You cannot
create, delete, or modify these VLANs. You can display these VLANs and
their associated use.
All configured ports belong to the default VLAN (VLAN1) when you first bring up the switch. The default
VLAN uses only default values, and you cannot create, delete, or suspend activity in the default VLAN.
You create a VLAN by assigning a number to it; you can delete VLANs and move them from the active
state to the suspended state. If you try to create a VLAN with an existing VLAN ID, the switch goes into
the VLAN submode but does not create the same VLAN again.
Newly created VLANs remain unused until ports are assigned to the VLAN. All ports are assigned to
VLAN1 by default.
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Managing networking resources
