Vlan Port Membership Modes - Cisco Catalyst 2960 series Configuration Manual

VLAN Port Membership Modes

On using the LAN Base image, only the lanbase-default template supports 1000 VLANs. The remaining
Note
templates (default and lanbase-routing) only supports 255 VLANs. Up to 64 VLANs are supported when
the switch is running the LAN Lite image.
The switch supports per-VLAN spanning-tree plus (PVST+) or rapid PVST+ with a maximum of 128
spanning-tree instances. One spanning-tree instance is allowed per VLAN. The switch supports only IEEE
802.1Q trunking methods for sending VLAN traffic over Ethernet ports.
Note Up to 64 spanning-tree instances are supported when the switch is running the LAN Lite image.
VLAN Port Membership Modes
You configure a port to belong to a VLAN by assigning a membership mode that specifies the kind of traffic
the port carries and the number of VLANs to which it can belong.
When a port belongs to a VLAN, the switch learns and manages the addresses associated with the port on a
per-VLAN basis.
Table 7: Port Membership Modes and Characteristics
Membership Mode
Static-access
Trunk (IEEE 802.1Q) :
Catalyst 2960-X Switch VLAN Configuration Guide, Cisco IOS Release 15.0(2)EX
42
• IEEE 802.1Q—
Industry-standard trunking
encapsulation.
VLAN Membership Characteristics
A static-access port can belong to
one VLAN and is manually
assigned to that VLAN.
A trunk port is a member of all
VLANs by default, including
extended-range VLANs, but
membership can be limited by
configuring the allowed-VLAN
list. You can also modify the
pruning-eligible list to block
flooded traffic to VLANs on trunk
ports that are included in the list.
Configuring VLANs
VTP Characteristics
VTP is not required. If you do not
want VTP to globally propagate
information, set the VTP mode to
transparent. To participate in VTP,
there must be at least one trunk port
on the switch or the switch stack
connected to a trunk port of a
second switch or switch stack.
VTP is recommended but not
required. VTP maintains VLAN
configuration consistency by
managing the addition, deletion,
and renaming of VLANs on a
network-wide basis. VTP
exchanges VLAN configuration
messages with other switches over
trunk links.
OL-29065