H3C Technologies H3C S7500E Series Switches - Manual (Page 261)

19-3
Figure 19-1 GARP message format
Table 19-1 describes the GARP message fields.
Table 19-1 Description on the GARP message fields
Field Description Value
Protocol ID Protocol identifier for GARP 1
Message
One or multiple messages, each containing an
attribute type and an attribute list
––
Attribute Type Defined by the concerned GARP application
0x01 for GVRP, indicating the
VLAN ID attribute
Attribute List Contains one or multiple attributes ––
Attribute
Consists of an Attribute Length, an Attribute
Event, and an Attribute Value
––
Attribute Length
Number of octets occupied by an attribute,
inclusive of the attribute length field
2 to 255 (in bytes)
Attribute Event Event described by the attribute
0: LeaveAll event
1: JoinEmpty event
2: JoinIn event
3: LeaveEmpty event
4: LeaveIn event
5: Empty event
Attribute Value Attribute value
VLAN ID for GVRP
If the Attribute Event is LeaveAll,
Attribute Value is omitted.