S5820 BGP一级RR路由反射器典型组网配置案例

组网说明：

本案例使用H3C HCL模拟器的S5820交换机来模拟BGP一级RR路由反射器的典型组网配置。SW1、SW2属于AS100，SW3属于AS200.由于SW1与SW3没有互联，又想实现PC的互通，因此需要采用RR路由反射器技术，SW2为SW1的RR路由反射器，SW1为SW2的RR路由反射器的客户端。为了使得SW1与SW2之间能够建立IBGP邻居关系及达到路由反射的效果，因此SW1与SW2之间同时运行OSPF路由协议，为IBGP邻居的建立及路由反射提供承载。最后SW2与SW3之间建立EBGP邻居关系。

IP地址规划如下：

SW1：

sys

System View: return to User View with Ctrl+Z.

[H3C]sysname SW1

[SW1]int loopback 0

[SW1-LoopBack0]ip address 1.1.1.1 32

[SW1-LoopBack0]quit

[SW1]router id 1.1.1.1

[SW1]vlan 10

[SW1-vlan10]quit

[SW1]vlan 20

[SW1-vlan20]quit

[SW1]int vlan 10

[SW1-Vlan-interface10]ip address 192.168.10.1 24

[SW1-Vlan-interface10]quit

[SW1]int vlan 20

[SW1-Vlan-interface20]ip address 192.168.20.1 24

[SW1-Vlan-interface20]quit

[SW1]int gi 1/0/3

[SW1-GigabitEthernet1/0/3]port link-type access

[SW1-GigabitEthernet1/0/3]port access vlan 10

[SW1-GigabitEthernet1/0/3]quit

[SW1]int gi 1/0/4

[SW1-GigabitEthernet1/0/4]port link-type access

[SW1-GigabitEthernet1/0/4]port access vlan 20

[SW1-GigabitEthernet1/0/4]quit

[SW1]int gi 1/0/2

[SW1-GigabitEthernet1/0/2]port link-mode route

[SW1-GigabitEthernet1/0/2]des

[SW1-GigabitEthernet1/0/2]ip address 10.0.0.1 30

[SW1-GigabitEthernet1/0/2]quit

[SW1]ospf 1 router-id 1.1.1.1

[SW1-ospf-1]area 0.0.0.0

[SW1-ospf-1-area-0.0.0.0]network 10.0.0.1 0.0.0.0

[SW1-ospf-1-area-0.0.0.0]network 1.1.1.1 0.0.0.0

[SW1-ospf-1-area-0.0.0.0]quit

[SW1-ospf-1]quit

[SW1]bgp 100

[SW1-bgp-default]router-id 1.1.1.1

[SW1-bgp-default]peer 3.3.3.3 as-number 100

[SW1-bgp-default]peer 3.3.3.3 connect-interface LoopBack 0

[SW1-bgp-default]address-family ipv4 unicast

[SW1-bgp-default-ipv4]peer 3.3.3.3 enable

[SW1-bgp-default-ipv4]network 192.168.10.0 255.255.255.0

[SW1-bgp-default-ipv4]network 192.168.20.0 255.255.255.0

[SW1-bgp-default-ipv4]quit

[SW1-bgp-default]quit

SW2：

sys

System View: return to User View with Ctrl+Z.

[H3C]sysname SW2

[SW2]int loopback 0

[SW2-LoopBack0]ip address 3.3.3.3 32

[SW2-LoopBack0]quit

[SW2]router id 3.3.3.3

[SW2]int gi 1/0/1

[SW2-GigabitEthernet1/0/1]port link-mode route

[SW2-GigabitEthernet1/0/1]des

[SW2-GigabitEthernet1/0/1]ip address 10.0.0.2 30

[SW2-GigabitEthernet1/0/1]quit

[SW2]int gi 1/0/2

[SW2-GigabitEthernet1/0/2]port link-mode route

[SW2-GigabitEthernet1/0/2]ip address 10.0.0.5 30

[SW2-GigabitEthernet1/0/2]des

[SW2-GigabitEthernet1/0/2]quit

[SW2]ospf 1 router-id 3.3.3.3

[SW2-ospf-1]area 0.0.0.0

[SW2-ospf-1-area-0.0.0.0]network 10.0.0.2 0.0.0.0

[SW2-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

[SW2-ospf-1-area-0.0.0.0]quit

[SW2-ospf-1]quit

[SW2]bgp 100

[SW2-bgp-default]router-id 3.3.3.3

[SW2-bgp-default]peer 1.1.1.1 as-number 100

[SW2-bgp-default]peer 1.1.1.1 connect-interface LoopBack 0

[SW2-bgp-default]peer 10.0.0.6 as-number 200

[SW2-bgp-default]address-family ipv4 unicast

[SW2-bgp-default-ipv4]import-route direct

[SW2-bgp-default-ipv4]peer 1.1.1.1 enable

[SW2-bgp-default-ipv4]peer 1.1.1.1 reflect-client  //将1.1.1.1指定为RR路由反射器的客户端

[SW2-bgp-default-ipv4]peer 10.0.0.6 enable

[SW2-bgp-default-ipv4]quit

[SW2-bgp-default]quit

SW3：

sys

System View: return to User View with Ctrl+Z.

[H3C]sysname SW3

[SW3]int loopback 0

[SW3-LoopBack0]ip address 2.2.2.2 32

[SW3-LoopBack0]quit

[SW3]router id 2.2.2.2

[SW3]vlan 100

[SW3-vlan100]quit

[SW3]vlan 200

[SW3-vlan200]quit

[SW3]int vlan 100

[SW3-Vlan-interface100]ip address 172.16.10.1 24

[SW3-Vlan-interface100]quit

[SW3]int vlan 200

[SW3-Vlan-interface200]ip address 172.16.20.1 24

[SW3-Vlan-interface200]quit

[SW3]int gi 1/0/3

[SW3-GigabitEthernet1/0/3]port link-type access

[SW3-GigabitEthernet1/0/3]port access vlan 100

[SW3-GigabitEthernet1/0/3]quit

[SW3]int gi 1/0/4

[SW3-GigabitEthernet1/0/4]port link-type access

[SW3-GigabitEthernet1/0/4]port access vlan 200

[SW3-GigabitEthernet1/0/4]quit

[SW3]int gi 1/0/2

[SW3-GigabitEthernet1/0/2]port link-mode route

[SW3-GigabitEthernet1/0/2]des

[SW3-GigabitEthernet1/0/2]ip address 10.0.0.6 30

[SW3-GigabitEthernet1/0/2]quit

[SW3]bgp 200

[SW3-bgp-default]router-id 2.2.2.2

[SW3-bgp-default]peer 10.0.0.5 as-number 100

[SW3-bgp-default]address-family ipv4 unicast

[SW3-bgp-default-ipv4]peer 10.0.0.5 enable

[SW3-bgp-default-ipv4]import-route direct

[SW3-bgp-default-ipv4]network 172.16.10.0 255.255.255.0

[SW3-bgp-default-ipv4]network 172.16.20.0 255.255.255.0

[SW3-bgp-default-ipv4]quit

[SW3-bgp-default]quit

PC都填写IP地址：

PC之间可以相互PING通：

查看SW1的BGP邻居信息：

查看SW2的BGP邻居信息：

查看SW3的BGP邻居信息：

查看SW1的路由表：

查看SW2的路由表：

查看SW3的路由表：

至此，S5820 BGP一级RR路由反射器典型组网配置案例已完成！