BGP团体属性配置

AR1：

#

interface Ethernet0/0/0

ip address 192.168.1.1 255.255.255.0

#

interface Ethernet0/0/1

ip address 192.168.2.1 255.255.255.0

#

bgp 100

router-id 1.1.1.1

peer 192.168.2.2 as-number 200

#

ipv4-family unicast

undo synchronization

network 192.168.1.0

peer 192.168.2.2 enable

#

AR3:

#

interface Ethernet0/0/0

ip address 192.168.2.2 255.255.255.0

#

interface Ethernet0/0/1

ip address 192.168.3.1 255.255.255.0

#

#

bgp 200

router-id 2.2.2.2

peer 192.168.2.1 as-number 100

peer 192.168.3.2 as-number 300

#

ipv4-family unicast

undo synchronization

network 192.168.2.0

network 192.168.3.0

peer 192.168.2.1 enable

peer 192.168.3.2 enable

AR4

interface Ethernet0/0/0

ip address 192.168.3.2 255.255.255.0

#

bgp 300

router-id 3.3.3.3

peer 192.168.3.1 as-number 200

#

ipv4-family unicast

undo synchronization

peer 192.168.3.1 enable

#

这样bgp就建立起来了

[Huawei-bgp]dis bgp routing-table 192.168.1.1

BGP local router ID : 2.2.2.2

Local AS number : 200

Paths: 1 available, 1 best, 1 select

BGP routing table entry information of 192.168.1.0/24:

From: 192.168.2.1 (1.1.1.1)

Route Duration: 00h14m16s

Direct Out-interface: Ethernet0/0/0

Original nexthop: 192.168.2.1

Qos information : 0x0

AS-path 100, origin igp, MED 0, pref-val 0, valid, external, best, select, acti

ve, pre 255

Advertised to such 2 peers:

192.168.2.1

192.168.3.2

看到AR3把学到的bgp传递给AR1 AR4 了

现在要做的是：AR3阻止从AR1学习到的BGP发布到AR4.

AR1：

#

route-policy 1 permit node 10

apply community no-export

#

bgp 100

peer 192.168.2.2 route-policy 1 export

peer 192.168.2.2 advertise-community

#

再查看AR4

[Huawei-bgp]dis bgp rou

[Huawei-bgp]dis bgp routing-table

BGP Local router ID is 3.3.3.3

Status codes: * - valid, > - best, d - damped,

h - history, i - internal, s - suppressed, S - Stale

Origin : i - IGP, e - EGP, ? - incomplete

Total Number of Routes: 2

Network NextHop MED LocPrf PrefVal Path/Ogn

*> 192.168.2.0 192.168.3.1 0 0 200i

192.168.3.0 192.168.3.1 0 0 200i

就没有到AR1的bgp了