display l2protocol-tunnel group-mac

Function

The display l2protocol-tunnel group-mac command displays transparent transmission information about all standard Layer 2 protocols or a specified Layer 2 protocol.

Format

display l2protocol-tunnel group-mac { all | protocol-type | user-defined-protocol protocol-name }

Parameters

Parameter	Description	Value
all	Displays transparent transmission information about all standard Layer 2 protocols and user-defined Layer 2 protocols.	-
protocol-type	Displays transparent transmission information about a specified Layer 2 protocol.	The protocol type can be: Spanning Tree Protocol (STP) Link Aggregation Control Protocol (LACP) Ethernet Operation, Administration, and Maintenance 802.3ah (EOAM3ah) Link Layer Discovery Protocol (LLDP) GARP VLAN Registration Protocol (GVRP) GARP Multicast Registration Protocol (GMRP) HUAWEI Group Management Protocol (HGMP) VLAN Trunking Protocol (VTP) Unidirectional Link Detection (UDLD) Port Aggregation Protocol (PAGP) Cisco Discovery Protocol (CDP) Per VLAN Spanning Tree Plus (PVST+) Shared Spanning Tree Protocol (SSTP) Dynamic Trunking Protocol (DTP) Device Link Detection Protocol (DLDP) Ethernet Synchronization Message Channel (ESMC)
user-defined-protocol protocol-name	Displays transparent transmission information about a user-defined protocol. protocol-name specifies the name of a user-defined protocol.	The name is in the format of character strings. It is case-insensitive without spaces. The value ranges from 1 to 31. When double quotation marks are used around the string, spaces are allowed in the string.

Parameter

Description

Value

all

Displays transparent transmission information about all standard Layer 2 protocols and user-defined Layer 2 protocols.

protocol-type

Displays transparent transmission information about a specified Layer 2 protocol.

The protocol type can be:

Spanning Tree Protocol (STP)
Link Aggregation Control Protocol (LACP)
Ethernet Operation, Administration, and Maintenance 802.3ah (EOAM3ah)
Link Layer Discovery Protocol (LLDP)
GARP VLAN Registration Protocol (GVRP)
GARP Multicast Registration Protocol (GMRP)
HUAWEI Group Management Protocol (HGMP)
VLAN Trunking Protocol (VTP)
Unidirectional Link Detection (UDLD)
Port Aggregation Protocol (PAGP)
Cisco Discovery Protocol (CDP)
Per VLAN Spanning Tree Plus (PVST+)
Shared Spanning Tree Protocol (SSTP)
Dynamic Trunking Protocol (DTP)
Device Link Detection Protocol (DLDP)
Ethernet Synchronization Message Channel (ESMC)

user-defined-protocol protocol-name

Displays transparent transmission information about a user-defined protocol. protocol-name specifies the name of a user-defined protocol.

The name is in the format of character strings. It is case-insensitive without spaces. The value ranges from 1 to 31.

When double quotation marks are used around the string, spaces are allowed in the string.

Views

All views

Default Level

1: Monitoring level

Usage Guidelines

After configuring Layer 2 protocol tunneling, you can run this command to check transparent transmission information about all standard Layer 2 protocols or a specified Layer 2 protocol.

Example

# Display transparent transmission information about the STP protocol.

<HUAWEI> display l2protocol-tunnel group-mac stp
Protocol  EncapeType  ProtocolType   Protocol-MAC    Group-MAC       Pri
------------------------------------------------------------------------------------------
stp       llc           dsap 0x42    0180-c200-0000   0100-0ccd-cdd0  0 
                        ssap 0x42

**Table 1** Description of the display l2protocol-tunnel group-mac command output
Item	Description
Protocol	Name of a Layer 2 protocol whose packets are transparently transmitted.
EncapeType	Encapsulation types of protocols. At present, the encapsulation types of protocol packets can be Ethernet II, SNAP and LLC.
ProtocolType	Type of a Layer 2 protocol whose packets are transparently transmitted.
Protocol-MAC	Multicast destination MAC address of transparently transmitted Layer 2 protocol packets.
Group-MAC	Group MAC address of transparently transmitted Layer 2 protocol packets. It is a multicast MAC address that replaces the original multicast destination MAC address of transparently transmitted Layer 2 protocol packets.
Pri	Priority of transparently transmitted Layer 2 protocol packets.