Specifications
Terms and Definitions
March 15, 2011 Page 18 of 20
Terms and Definitions
Table 3liststermsanddefinitionsusedinVLANconfiguration.
(Applies to N-Series, S-Series, K-Series only.)
Display the VLAN constraint setting.
show vlan constraint [vlan id]
Display the VLAN dynamic egress setting. show vlan dynamicegress [vlan id]
Display all static VLANs. show vlan static
Display ports assigned to VLANs. show port vlan [port-string]
Display existing GVRP settings. show gvrp [port-string]
Display static ports on the given vid, group. show igmp static [vlan id]
(Applies to stackable and standalone switches only.)
Display port(s) configured in protected mode
show port protected [port-string] |
[group-id]
(Applies to stackable and standalone switches only.)
Display the name of a specific group of protected
ports.
show port protected name group-id
Table 2 Displaying VLAN Information (continued)
Task Command
Table 3 VLAN Terms and Definitions
Term Definition
Default VLAN The VLAN to which all ports are assigned upon initialization. The default VLAN has a
VLAN ID of 1 and cannot be deleted or renamed.
Filtering Database A database structure within the switch that keeps track of the associations between
MAC addresses, VLANs, and interface (port) numbers. The Filtering Database is
referred to when a switch makes a forwarding decision on a frame.
Filtering Database
Identifier (FID)
Addressing information that the device learns about a VLAN is stored in the filtering
database assigned to that VLAN. Several VLANs can be assigned to the same FID
to allow those VLANs to share addressing information. This enables the devices in
the different VLANs to communicate with each other when the individual ports have
been configured to allow communication to occur.
The configuration is accomplished using the Local Management VLAN Forwarding
Configuration screen. By default a VLAN is assigned to the FID that matches its
VLAN ID.
Forwarding List A list of the ports on a particular device that are eligible to transmit frames for a
selected VLAN.
GARP Multicast
Registration
Protocol (GMRP)
A GARP application that functions in a similar fashion as GVRP, except that GMRP
registers multicast addresses on ports to control the flooding of multicast frames.
GARP VLAN
Registration
Protocol (GVRP)
A GARP application used to dynamically create VLANs across a switched network.