Chapter 17
| VLAN Commands
Configuring VLAN Interfaces
– 404 –
Default Setting
All ports are assigned to VLAN 1 by default.
The default frame type is untagged.
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆
If a port or trunk has switchport mode set to
access
, then only one VLAN can be
added with this command. If a VLAN list is specified, only the last VLAN in the
list will be added to the interface.
◆
A port, or a trunk with switchport mode set to
hybrid
, must be assigned to at
least one VLAN as untagged.
◆
If a trunk has switchport mode set to
trunk
(i.e., 1Q Trunk), then you can only
assign an interface to VLAN groups as a tagged member.
◆
Frames are always tagged within the switch. The tagged/untagged parameter
used when adding a VLAN to an interface tells the switch whether to keep or
remove the tag from a frame on egress.
◆
If none of the intermediate network devices nor the host at the other end of the
connection supports VLANs, the interface should be added to these VLANs as
an untagged member. Otherwise, it is only necessary to add at most one VLAN
as untagged, and this should correspond to the native VLAN for the interface.
◆
If a VLAN on the forbidden list for an interface is manually added to that
interface, the VLAN is automatically removed from the forbidden list for that
interface.
Example
The following example shows how to add VLANs 1, 2, 5 and 6 to the allowed list as
tagged VLANs for port 1:
Console(config)#interface ethernet 1/1
Console(config-if)#switchport allowed vlan add 1,2,5,6 tagged
Console(config-if)#
switchport
ingress-filtering
This command enables ingress filtering for an interface. Use the
no
form to restore
the default.
Syntax
[
no
]
switchport ingress-filtering
Default Setting
Disabled
Summary of Contents for EX-3524
Page 2: ......
Page 28: ...Figures 28 ...
Page 34: ...Section I Getting Started 34 ...
Page 58: ...Chapter 1 Initial Switch Configuration Setting the System Clock 58 ...
Page 72: ...Chapter 2 Using the Command Line Interface CLI Command Groups 72 ...
Page 156: ...Chapter 5 SNMP Commands Notification Log Commands 156 ...
Page 164: ...Chapter 6 Remote Monitoring Commands 164 ...
Page 218: ...Chapter 7 Authentication Commands Management IP Filter 218 ...
Page 268: ...Chapter 8 General Security Measures Port based Traffic Segmentation 268 ...
Page 292: ...Chapter 9 Access Control Lists ACL Information 292 ...
Page 312: ...Chapter 10 Interface Commands Power Savings 312 ...
Page 324: ...Chapter 11 Link Aggregation Commands Trunk Status Display Commands 324 ...
Page 366: ...Chapter 15 Address Table Commands 366 ...
Page 428: ...Chapter 17 VLAN Commands Configuring Voice VLANs 428 ...
Page 572: ...Chapter 25 IP Interface Commands IPv6 Interface 572 ...
Page 578: ...Section I Appendices 578 ...