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LGB5028A User‘s Manual
724-746-5500 | blackbox.com
Chapter 6: Configuration
Figure 6-60. The Voice VLAN OUI Table screen.
Parameter Description
Delete: Check to delete the entry. It will be deleted during the next save.
Telephony OUI: A telephony OUI address is a globally unique identifier assigned to a vendor by IEEE. It must be 6 characters
long and the input format is “xx-xx-xx” (x is a hexadecimal digit).
Description:
Show the description of OUI address. Normally, it describes which vendor telephony device it belongs to. The allowed string
length is 0 to 32.
Add New entry:
Click to add a new entry in Voice VLAN OUI table. An empty row is added to the table, the telephony OUI, and description.
Buttons:
Save: Click to save changes.
Reset: Click to undo any changes made locally and revert to previously saved values.
NOTE: All non-telephonic MAC addresses in the Voice VLAN will be blocked for 10 seconds.
To add a new OUI entry to a port, the OUI will match this entry, and the packet will be forwarded.
6.12 GARP
The Generic Attribute Registration Protocol (GARP) provides a generic framework where devices in a bridged LAN, for example,
end stations and switches, can register and de-register attribute values, such as VLAN Identifiers, with each other. The attributes
are propagated to devices in the bridged LAN, and these devices form a “reachability” tree that is a subset of an active topology.
GARP defines the architecture, rules of operation, state machines, and variables for the registration and de-registration of
attribute values.
A GARP participation in a switch or an end station consists of a GARP application component, and a GARP Information
Declaration (GID) component associated with each port or the switch. The propagation of information between GARP
participants for the same application in a bridge is carried out by the GARP Information Propagation (GIP) component. Protocol
exchanges take place between GARP participants via LLC Type 1 services, using the group MAC address and PDU
format defined for the relevant GARP application.
