企业官网建设流程全解析

我们知道BGP路由默认会自动学习最优路由，无法等价的，那么我们通过BGP等价路由条目可以实现BGP等价路由的效果。

一 网络拓扑

如上图：

Leaf1和Spine1和Spine2建立IBGP，Border1和Spine1和Spine2建立EBGP；

二 设备配置

2.1 BGP等价路由配置命令

配置命令：

Leaf1(config)#rou bgp 100

Leaf1(config-router)#address-family ipv4

Leaf1(config-router-af)#maximum-paths ?

ebgp EBGP-multipath

ibgp IBGP-multipath

Leaf1(config-router-af)#

Leaf1(config-router-af)#maximum-paths ibgp ?

<1-32> Number of paths

Leaf1(config-router-af)#maximum-paths ibgp 32

Leaf1(config-router-af)#maximum-paths ebgp 32

Leaf1(config-router-af)#

2.2 Leaf1配置bgp等价路由

!

router bgp 100

bgp router-id 6.6.6.1

bgp log-neighbor-changes

bgp graceful-restart restart-time 120

bgp graceful-restart stalepath-time 360

bgp graceful-restart

neighbor 6.6.6.2 remote-as 100

neighbor 6.6.6.2 update-source Loopback 0

neighbor 6.6.6.3 remote-as 100

neighbor 6.6.6.3 update-source Loopback 0

address-family ipv4

maximum-paths ebgp 32

maximum-paths ibgp 32

network 6.6.6.6 mask 255.255.255.255

neighbor 6.6.6.2 activate

neighbor 6.6.6.3 activate

exit-address-family

!

2.3 Spine1、Spine2、Border同样配置

!

router bgp 100

address-family ipv4

maximum-paths ebgp 32

maximum-paths ibgp 32

!

三 状态查看

3.1 配置等价路由前BGP路由查看-非等价路由

Leaf1#sh bgp ipv4 unicast

BGP table version is 3, local router ID is 6.6.6.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

S Stale, b - backup entry, m - multipath, f Filter, a additional-path

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

Network Next Hop Metric LocPrf Weight Path

*bi 6.6.6.4/32 6.6.6.3 0 100 0 200 i备份

*>i 6.6.6.2 0 100 0 200 i

*> 6.6.6.6/32 0.0.0.0 0 32768 i

Total number of prefixes 2

Leaf1#

Leaf1#sh ip route

Codes: C - Connected, L - Local, S - Static

R - RIP, O - OSPF, B - BGP, I - IS-IS, V - Overflow route

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

SU - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

IA - Inter area, EV - BGP EVPN, A - Arp to host

LA - Local aggregate route

* - candidate default

Gateway of last resort is no set

C 1.1.1.0/31 is directly connected, GigabitEthernet 0/0

C 1.1.1.0/32 is local host.

C 1.1.1.2/31 is directly connected, GigabitEthernet 0/1

C 1.1.1.2/32 is local host.

C 6.6.6.1/32 is local host.

O 6.6.6.2/32 [110/1] via 1.1.1.1, 00:20:52, GigabitEthernet 0/0

O 6.6.6.3/32 [110/1] via 1.1.1.3, 00:17:36, GigabitEthernet 0/1

B 6.6.6.4/32 [200/0] via 6.6.6.2, 00:01:52

C 6.6.6.6/32 is local host.

Leaf1#

Leaf1#sh bgp ipv4 unicast 6.6.6.4

BGP routing table entry for 6.6.6.4/32(#0x7f9714becdd0)

Paths: (2 available, best #2, table Default-IP-Routing-Table)

Not advertised to any peer

200

6.6.6.3 (metric 1) from 6.6.6.3 (6.6.6.3)

Origin IGP, metric 0, localpref 100, valid, internal,backup备份路由

Last update: Mon Jun 22 23:23:08 2026

RX ID: 0,TX ID: 0

200

6.6.6.2 (metric 1) from 6.6.6.2 (6.6.6.2)

Origin IGP, metric 0, localpref 100, valid, internal, best

Last update: Mon Jun 22 23:22:36 2026

RX ID: 0,TX ID: 0

Leaf1#

3.2 配置等价路由前BGP路由查看-等价路由

Leaf1#sh bgp ipv4 unicast

BGP table version is 3, local router ID is 6.6.6.1

Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,

S Stale, b - backup entry, m - multipath, f Filter, a additional-path

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

Network Next Hop Metric LocPrf Weight Path

*mi 6.6.6.4/32 6.6.6.3 0 100 0 200 i

*>i 6.6.6.2 0 100 0 200 i

*> 6.6.6.6/32 0.0.0.0 0 32768 i

Total number of prefixes 2

Leaf1#sh ip route

Codes: C - Connected, L - Local, S - Static

R - RIP, O - OSPF, B - BGP, I - IS-IS, V - Overflow route

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2

SU - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

IA - Inter area, EV - BGP EVPN, A - Arp to host

LA - Local aggregate route

* - candidate default

Gateway of last resort is no set

C 1.1.1.0/31 is directly connected, GigabitEthernet 0/0

C 1.1.1.0/32 is local host.

C 1.1.1.2/31 is directly connected, GigabitEthernet 0/1

C 1.1.1.2/32 is local host.

C 6.6.6.1/32 is local host.

O 6.6.6.2/32 [110/1] via 1.1.1.1, 00:30:56, GigabitEthernet 0/0

O 6.6.6.3/32 [110/1] via 1.1.1.3, 00:27:40, GigabitEthernet 0/1

B 6.6.6.4/32 [200/0] via 6.6.6.2, 00:02:59

[200/0] via 6.6.6.3, 00:02:59

C 6.6.6.6/32 is local host.

Leaf1#

Leaf1#

Leaf1#sh bgp ipv4 unicast 6.6.6.4

BGP routing table entry for 6.6.6.4/32(#0x7f9714becdd0)

Paths: (2 available, best #2, table Default-IP-Routing-Table)

Not advertised to any peer

200

6.6.6.3 (metric 1) from 6.6.6.3 (6.6.6.3)

Origin IGP, metric 0, localpref 100, valid, internal,multipath

Last update: Mon Jun 22 23:23:08 2026

RX ID: 0,TX ID: 0

200

6.6.6.2 (metric 1) from 6.6.6.2 (6.6.6.2)

Origin IGP, metric 0, localpref 100, valid, internal, multipath,best

Last update: Mon Jun 22 23:22:36 2026

RX ID: 0,TX ID: 0

Leaf1#