Creating And Modifying Vlans; Default Ethernet Vlan Configuration - Cisco 3845 - Security Bundle Router Software Manual
Software configuration guide
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Chapter 10
Configuring VLANs
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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:
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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
Default Ethernet VLAN Configuration
The switch supports only Ethernet interfaces.
VLANs.
On extended-range VLANs, you can change only the MTU size. All other characteristics must remain
Note
at the default conditions.
Table 10-2
Parameter
VLAN name
OL-23400-01
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.
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
Ethernet VLAN Defaults and Ranges
1
VLANxxxx, where xxxx
represents four numeric digits
(including leading zeros) equal
to the VLAN ID number
Table 10-2
shows the default configuration for Ethernet
Range
1 to 4094.
Note
No range
Cisco ME 3800X and 3600X Switch Software Configuration Guide
Creating and Modifying VLANs
for more information.
Extended-range VLANs (VLAN
IDs 1006 to 4094) are not saved in
the VLAN database.
10-5
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