10-5
Cisco ME 3800X and 3600X Switch Software Configuration Guide
OL-23400-01
Chapter 10 Configuring VLANs
Creating and Modifying VLANs
•
UNI isolated VLANs prohibit local switching between UNIs or enhanced network interfaces (ENIs)
on a switch.
•
UNI community VLANs allow local switching is allowed between these port types.
Because all ports on the ME 3800X and ME 3600X are NNIs, these commands have no effect on the
switch.
Creating and Modifying VLANs
You use VLAN configuration mode, accessed by entering the vlan global configuration command to
create VLANs and to modify some parameters. You use the interface configuration mode to define the
port membership mode and to add and remove ports from VLANs. The results of these commands are
written to the running-configuration file, and you can display the file by entering the show
running-config privileged EXEC command.
These sections contain VLAN configuration information:
•
Default Ethernet VLAN Configuration, page 10-5
•
VLAN Configuration Guidelines, page 10-6
•
Creating or Modifying an Ethernet VLAN, page 10-7
•
Assigning Static-Access Ports to a VLAN, page 10-8
•
Displaying VLANs, page 10-9
For more efficient management of the MAC address table space available on the switch, you can control
which VLANs learn MAC addresses by disabling MAC address learning on specific VLANs. See the
“Disabling MAC Address Learning on a VLAN” section on page 5-28
for more information.
Default Ethernet VLAN Configuration
The switch supports only Ethernet interfaces.
Table 10-2
shows the default configuration for Ethernet
VLANs.
Note
On extended-range VLANs, you can change only the MTU size. All other characteristics must remain
at the default conditions.
Table 10-2
Ethernet VLAN Defaults and Ranges
Parameter
Default
Range
VLAN ID
1
1 to 4094.
Note
Extended-range VLANs (VLAN
IDs 1006 to 4094) are not saved in
the VLAN database.
VLAN name
VLANxxxx, where xxxx
represents four numeric digits
(including leading zeros) equal
to the VLAN ID number
No range
