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Table 8-20
Packet processing on an inbound interface
Inbound Interface
Type
Raw Encapsulation
(Ethernet Encapsulation)
Tagged Encapsulation
(VLAN Encapsulation)
VLANIF interface
l
default mode: No action is
performed.
l
trunk mode: The outer tags
are stripped.
No action is performed.
l
default mode: Adds a tag
(default VLAN ID of the
interface).
l
trunk mode: No action is
required.
Ethernet main
interface
Tags are stripped.
No action is performed.
Dot1q sub-interface
Removes one tag.
Keeps the tag unchanged.
Dot1q termination
sub-interface
Removes one tag.
Keeps the tag unchanged.
QinQ termination
sub-interface (in
symmetry mode)
Removes the outer tag.
Keeps both inner and outer tags
unchanged.
QinQ termination
sub-interface (in
asymmetry mode)
Removes both the inner and
outer tags.
Removes both inner and outer
tags, and then adds another tag.
Table 8-21
Packet processing on an outbound interface
Outbound
Interface Type
Raw Encapsulation
(Ethernet Encapsulation)
Tagged Encapsulation
(VLAN Encapsulation)
VLANIF interface
l
No action is performed by
default.
l
A specific tag is added in
trunk mode.
l
The tag is stripped by default.
l
The tag is replaced in trunk
mode.
Ethernet main
interface
A specific tag is added.
The tag is replaced.
Dot1q sub-interface
Adds one tag.
Replaces the VLAN ID in the tag
contained in a packet with the
local VLAN ID.
Dot1q termination
sub-interface
Adds one tag.
Replaces the VLAN ID in the tag
contained in a packet with the
local VLAN ID.
QinQ termination
sub-interface (in
symmetry mode)
Adds an outer tag.
Replaces the VLAN ID in the
outer tag contained in a packet
with the local VLAN ID.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
8 Ethernet OAM Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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