Specifications

Configuring VLANs
March 15, 2011 Page 11 of 20
Default Settings
Table 1listsVLANparametersandtheirdefaultvalues.
Table 1 Default VLAN Parameters
Parameter Description Default Value
garp timer Configures the three GARP timers.
The setting is critical and should only
be done by someone familiar with the
802.1Q standard.
• Join timer: 20 centiseconds
• Leave timer: 60 centiseconds
• Leaveall timer: 1000 centiseconds
GVRP Enables or disables the GARP VLAN
Registration Protocol (GVRP) on a
specific set of ports or all ports. GVRP
must be enabled to allow creation of
dynamic VLANs.
• Disabled at the port level
• Enabled at the global level
Note: The N-Series has GVRP
enabled at the port level and enabled
globally.
port discard Ports can be set to discard frames
based on whether or not they contain a
VLAN tag.
No frames are discarded
port ingress filter When enabled on a port, the VLAN IDs
of incoming frames are compared to
the port’s egress list. If the received
VLAN ID does not match a VLAN ID
on the port’s egress list, the frame is
dropped.
Enabled
port vlan ID (PVID) 802.1Q VLAN/port association. VLAN1/ Default VLAN
protected port
(Applies to stackable and
standalone switches
only.)
Prevents ports from forwarding traffic
to each other, even when they are on
the same VLAN.
Unprotected
vlan constraint
(Applies to N-Series, S-
Series, K-Series only.)
Configures VLANs to use an
independent or shared filtering
database.
VLANs use an independent filtering
database
vlan dynamicegress Enables or disables dynamic egress
processing for a given VLAN.
Disabled
vlan egress Configures the egress ports for a
VLAN and the type of egress for the
ports. Egress type can be tagged,
untagged, or forbidden.
Tagged
vlan name Associates a text name to one or more
VLANs.
None