Huawei S1720 Series Configuration Guide

Figure 7-5 Networking diagram for configuring the AS-Path filter
XGE0/0/2
200.1.2.1/24
EBGP
AS 10
SwitchA
XGE0/0/2
200.1.2.2/24
AS 20
SwitchB
XGE0/0/1
200.1.3.1/24
EBGP
XGE0/0/2
200.1.3.2/24
SwitchC
AS 30
XGE0/0/1
200.1.4.1/24
EBGP
XGE0/0/1
200.1.4.2/24
Switch Interface VLANIF interface IP address
SwitchA XGigabitEthernet0/0/1 VLANIF 10 200.1.4.1/24
SwitchA XGigabitEthernet0/0/2 VLANIF 20 200.1.2.1/24
SwitchB XGigabitEthernet0/0/1 VLANIF 30 200.1.3.1/24
SwitchB XGigabitEthernet0/0/2 VLANIF 20 200.1.2.2/24
SwitchC XGigabitEthernet0/0/2 VLANIF 30 200.1.3.2/24
SwitchC XGigabitEthernet0/0/1 VLANIF 10 200.1.4.2/24
Configuration Roadmap
The configuration roadmap is as follows:
1. Configure EBGP connections between Switch A and Switch B, Switch B and Switch C,
and Switch C and Switch A, and import direct routes.
2. Configure the AS-Path on Switch B, and apply the filtering rule.
Data Preparation
To complete the configuration, you need the following data:
l The router ID of Switch A is1.1.1.1, and the number of its AS is 10.
l The router ID of Switch B is 2.2.2.2, and the number of its AS is 20.
l The router ID of Switch C is 3.3.3.3, and the number of its AS is 30.
Procedure
Step 1 Configure VLANs that interfaces belong to.
<Quidway> system-view
[Quidway] sysname SwitchA
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 7 BGP Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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Huawei S1720 Series Specifications

General

Operating Humidity	5% to 95% (non-condensing)
Uplink Ports	4 x GE combo ports
VLANs	4094
Power Supply	AC 100-240V, 50/60Hz
Layer 2 Features	VLAN
Layer 3 Features	Static routing
Management	SNMP
Operating Temperature	0°C to 45°C
Storage Temperature	-40°C to +70°C
Dimensions (W x D x H)	442 mm x 220 mm x 43.6 mm