H3C S3500-EA IPv4 BGP联盟的典型配置
一、 组网需求:
AS 200中有多台BGP交换机,为了减少IBGP的连接数,现将他们划分为3个子自治系统:AS 65001、AS 65002和AS 65003。其中AS 65001内的三台交换机建立IBGP全连接
二、 组网图:
设备
接口
IP地址
设备
接口
IP地址
Switch A
Vlan-int100
200.1.1.1/24
Switch D
Vlan-int100
10.1.3.2/24
Vlan-int200
10.1.1.1/24
Vlan-int200
10.1.5.1/24
Vlan-int300
10.1.2.1/24
Switch E
Vlan-int100
10.1.4.2/24
Vlan-int400
10.1.3.1/24
Vlan-int200
10.1.5.2/24
Vlan-int500
10.1.4.1/24
Switch F
Vlan-int100
9.1.1.1/24
Switch B
Vlan-int100
10.1.1.2/24
Vlan-int200
200.1.1.2/24
Switch C
Vlan-int100
10.1.2.2/24
三、 配置步骤:
(1) 配置各交换机接口的IP地址(略)
(2) 配置BGP联盟
# 配置Switch A。
<SwitchA> system-view
[SwitchA] bgp 65001
[SwitchA-bgp] router-id 1.1.1.1
[SwitchA-bgp] confederation id 200
[SwitchA-bgp] confederation peer-as 65002 65003
[SwitchA-bgp] peer 10.1.1.2 as-number 65002
[SwitchA-bgp] peer 10.1.1.2 next-hop-local
[SwitchA-bgp] peer 10.1.2.2 as-number 65003
[SwitchA-bgp] peer 10.1.2.2 next-hop-local
[SwitchA-bgp] quit
# 配置Switch B。
<SwitchB> system-view
[SwitchB] bgp 65002
[SwitchB-bgp] router-id 2.2.2.2
[SwitchB-bgp] confederation id 200
[SwitchB-bgp] confederation peer-as 65001 65003
[SwitchB-bgp] peer 10.1.1.1 as-number 65001
[SwitchB-bgp] quit
# 配置Switch C。
<SwitchC> system-view
[SwitchC] bgp 65003
[SwitchC-bgp] router-id 3.3.3.3
[SwitchC-bgp] confederation id 200
[SwitchC-bgp] confederation peer-as 65001 65002
[SwitchC-bgp] peer 10.1.2.1 as-number 65001
[SwitchC-bgp] quit
(3) 配置AS 65001内的IBGP连接
# 配置Switch A。
[SwitchA] bgp 65001
[SwitchA-bgp] peer 10.1.3.2 as-number 65001
[SwitchA-bgp] peer 10.1.3.2 next-hop-local
[SwitchA-bgp] peer 10.1.4.2 as-number 65001
[SwitchA-bgp] peer 10.1.4.2 next-hop-local
[SwitchA-bgp] quit
# 配置Switch D。
<SwitchD> system-view
[SwitchD] bgp 65001
[SwitchD-bgp] router-id 4.4.4.4
[SwitchD-bgp] confederation id 200
[SwitchD-bgp] peer 10.1.3.1 as-number 65001
[SwitchD-bgp] peer 10.1.5.2 as-number 65001
[SwitchD-bgp] quit
# 配置Switch E。
<SwitchE> system-view
[SwitchE] bgp 65001
[SwitchE-bgp] router-id 5.5.5.5
[SwitchE-bgp] confederation id 200
[SwitchE-bgp] peer 10.1.4.1 as-number 65001
[SwitchE-bgp] peer 10.1.5.1 as-number 65001
[SwitchE-bgp] quit
(4) 配置AS100和AS200之间的EBGP连接。
# 配置Switch A。
[SwitchA] bgp 65001
[SwitchA-bgp] peer 200.1.1.2 as-number 100
[SwitchA-bgp] quit
# 配置Switch F。
<SwitchF> system-view
[SwitchF] bgp 100
[SwitchF-bgp] router-id 6.6.6.6
[SwitchF-bgp] peer 200.1.1.1 as-number 200
[SwitchF-bgp] network 9.1.1.0 255.255.255.0
[SwitchF-bgp] quit
(5) 验证配置结果。
# 查看Switch B的BGP路由表。
[SwitchB] display bgp routing-table
Total Number of Routes: 1
BGP Local router ID is 2.2.2.2
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*>i 9.1.1.0/24 10.1.1.1 0 100 0 (65001) 100i
[SwitchB] display bgp routing-table 9.1.1.0
BGP local router ID : 2.2.2.2
Local AS number : 65002
Paths: 1 available, 1 best
BGP routing table entry information of 9.1.1.0/24:
From : 10.1.1.1 (1.1.1.1)
Relay Nexthop : 0.0.0.0
Original nexthop: 10.1.1.1
AS-path : (65001) 100
Origin : igp
Attribute value : MED 0, localpref 100, pref-val 0, pre 255
State : valid, external-confed, best,
Not advertised to any peers yet
# 查看Switch D的BGP路由表。
[SwitchD] display bgp routing-table
Total Number of Routes: 1
BGP Local router ID is 4.4.4.4
Status codes: * - valid, > - best, d - damped,
h - history, i - internal, s - suppressed, S - Stale
Origin : i - IGP, e - EGP, ? - incomplete
Network NextHop MED LocPrf PrefVal Path/Ogn
*>i 9.1.1.0/24 10.1.3.1 0 100 0 100i
[SwitchD] display bgp routing-table 9.1.1.0
BGP local router ID : 4.4.4.4
Local AS number : 65001
Paths: 1 available, 1 best
BGP routing table entry information of 9.1.1.0/24:
From : 10.1.3.1 (1.1.1.1)
Relay Nexthop : 0.0.0.0
Original nexthop: 10.1.3.1
AS-path : 100
Origin : igp
Attribute value : MED 0, localpref 100, pref-val 0, pre 255
State : valid, internal, best, Not advertised to any peers yet
四、 配置关键点:
无。
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