Huawei Quidway NetEngine80E Configuration Manual page 901

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
Figure 8-8 Typical BGP networking
AS 65121
Router A
Before an AS_Path filter is configured on Router A, the BGP routing table on Router A is as
follows:
[RouterA] display bgp routing-table
BGP Local router ID is 189.6.2.2
Status codes: * - valid, > - best, d - damped,
Total Number of Routes: 9
*>
*>
*
*>
*
*>
*
*>
300i
*
300i
Case 1: Configure an AS_Path filter named s1 and allow Router A to accept only routes that
originate in AS 300.
[RouterA] ip as-path-filter s1 permit _300
[RouterA] display bgp routing-table as-path-filter s1
BGP Local router ID is 189.6.2.2
Status codes: * - valid, > - best, d - damped,
Total Number of Routes: 2
*>
Issue 02 (2014-09-30)
2.2.2.7/32
AS 65001
AS 65011
1.1.1.9/32
2.2.2.8/32
h - history,
Origin : i - IGP, e - EGP, ? - incomplete
Network
1.1.1.9/32
2.2.2.7/32
2.2.2.8/32
2.2.2.9/32
3.3.3.9/32
h - history,
Origin : i - IGP, e - EGP, ? - incomplete
Network
3.3.3.9/32
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
AS 65101
Router B
Router D
Router C
2.2.2.9/32
i - internal, s - suppressed, S - Stale
NextHop MED
0.0.0.0 0
10.1.1.2 0
10.1.2.2
10.1.2.2 0
10.1.1.2
10.1.1.2
10.1.2.2
10.1.1.2
10.1.2.2
i - internal, s - suppressed, S - Stale
NextHop MED
10.1.1.2
8 BGP Configuration
AS 300
Router E
3.3.3.9/32
LocPrf PrefVal Path/Ogn
0 i
0 65001i
0 65011 65001i
0 65011i
0 65001 65011i
0 65001 65101i
0 65011 65101i
0 65001 65101
0 65011 65101
LocPrf PrefVal Path/Ogn
0 65001 65101
876