Huawei quidway s7700 - Page 93

Applicable Environment
Currently, the S7700 supports the following VLAN division modes. You can choose one of them
as required. Table 3-5 lists VLAN division modes.
Table 3-5 VLAN assignment in different usage scenarios
VLAN
Assignment
Method
Advantage Disadvantage Usage Scenario
Port-based
VLAN
assignment
The configuration is
simple. It is the most
common VLAN
assignment method.
The configuration is
not flexible. If a port
needs to transmit
frames of another
VLAN, the port must
be deleted from the
original VLAN and
added to the new
VLAN. For a network
having a large number
of traveling users, the
network administrator
needs to spend more
time on maintenance.
Port-based VLAN
assignment is applicable
to large-scale networks
that do not have high
security requirements.
MAC address-
based VLAN
assignment
If a user travels from
one place to another,
the user does not need
to be added to a new
VLAN. This improves
security and flexibility
for terminal users.
A network
administrator needs to
configure a switch
with a MAC address
associated with a
specific VLAN. For a
network with a large
number of terminals,
configuration will take
the network
administrator a lot of
work before VLAN-
based communication
can be enabled.
MAC address-based
VLAN assignment is
applicable to networks
that have high security
requirements and many
traveling users.
IP subnet-
based VLAN
assignment
IP subnet-based and
protocol-based VLAN
assignment are both
called network layer-
based VLAN
assignment.
Network layer-based
VLAN assignment
greatly reduces the
workload of manual
configurations and
allows users to easily
Switches need to parse
the source IP addresses
of packets and convert
them into MAC
addresses. This slows
down the response of
switches.
IP subnet-based VLAN
assignment is applicable
to networks that have
traveling users and
require simple
management.
Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet 3 VLAN Configuration
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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