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Configuration Guide - Ethernet Switching

CloudEngine 8800, 7800, 6800, and 5800 V200R003C00

This document describes the configuration of Ethernet services, including configuring MAC address table, link aggregation, VLANs, MUX VLAN, Voice VLAN, VLAN mapping, QinQ, GVRP, VCMP, STP/RSTP/MSTP, VBST, SEP, RRPP, ERPS, LBDT, and Layer 2 protocol transparent transmission.
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Packet Format

Packet Format

GVRP is an application of GARP, and the GVRP packet format complies with GARP.

GARP packets are encapsulated in the IEEE 802.3 Ethernet format, as shown in Figure 8-2.

Figure 8-2 GARP packet format

The following table describes the fields in a GARP packet.

Field

Description

Protocol ID

Protocol ID. The value is 1.

Message

Message in a packet. A message consists of the Attribute Type and Attribute List fields.

Attribute Type

Attribute type, which is defined by the GARP application. The value is 0x01 for GVRP, indicating that the attribute value is a VLAN ID.

Attribute List

Attribute list, containing multiple attributes.

Attribute

Attribute, which consists of the Attribute Length, Attribute Event, and Attribute Value fields.

Attribute Length

Length of an attribute. The value is 2 to 255, in bytes.

Attribute Event

Event that an attribute describes:
  • 0: LeaveAll Event

  • 1: JoinEmpty Event

  • 2: JoinIn Event

  • 3: LeaveEmpty Event

  • 4: LeaveIn Event

  • 5: Empty Event

Attribute Value

Value of an attribute, which is a VLAN ID for GVRP but is invalid for a LeaveAll attribute.

End Mark

End of a GARP PDU. The value is 0x00.

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Updated: 2019-05-08

Document ID: EDOC1100004351

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