Dividing A Lan Into Vlans; Establishing The Configuration Task - Huawei Quidway S7700 Configuration Manual - Ethernet

Quidway S7700 Smart Routing Switch
Configuration Guide - Ethernet
VLAN Aggregation
To implement inter-VLAN communication on switches, configure IP addresses for the VLANIF
interfaces. When many VLANs are deployed, a great number of IP addresses are occupied.
VLAN aggregation can solve the problem of occupation of excessive IP addresses.
VLAN aggregation means that multiple VLANs are aggregated into a super-VLAN. The VLANs
that form the super-VLAN is called sub-VLANs.
You can create a VLANIF interface for a super-VLAN. Then, you can configure an IP address
only for this interface rather than for each sub-VLAN. All sub-VLANs share the same IP network
segment, which optimizes the use of IP addresses.
MUX VLAN
A MUX VLAN is used to isolate Layer 2 traffic between interfaces in a VLAN. For example,
on an intranet, a user interface can communicate with a server interface, but the user interfaces
cannot communicate with each other.
In MUX VLAN implementation, VLANs are classified in to MUX VLANs and subordinate
VLANs. Subordinate VLANs are classified into subordinate group VLANs and subordinate
separate VLANs.
The MUX VLAN can communicate with the subordinate VLANs, but the subordinate VLANs
cannot communicate with each. Interfaces in a subordinate group VLAN can communicate with
each other, but interfaces in a subordinate separate VLAN cannot communicate with each other.
You can implement inter-device MUX VLAN by configuring the same MUX VLAN on multiple
devices and configuring interfaces between the devices to allow packets of the MUX VLAN.
Implementation of inter-device MUX VLAN is the same as the implementation of MUX VLAN
on a single device.
VLAN Transparent Transmission
By using the VLAN transparent transmission function, the S7700 directly forwards the protocol
packets in the VLAN, without sending the packets to the CPU. If the S7700 is not required to
process the protocol packets, you can enable VLAN transparent transmission to improve the
performance of the S7700 and protect the S7700 against attacks.

3.3 Dividing a LAN into VLANs

A LAN can be divided into several VLANs and users in each VLAN can communicate with
each other. Currently, the S7700 supports several VLAN division modes. You can choose one
of them as required.

3.3.1 Establishing the Configuration Task

Before dividing a LAN into VLANs, familiarize yourself with the applicable environment,
complete the pre-configuration tasks, and obtain the data required for the configuration. This
will help you complete the configuration task quickly and accurately.
Issue 01 (2011-07-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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