S5820 BGP RR二级路由反射器典型组网配置

组网说明：

本案例采用H3C HCL模拟器的S5820交换机来模拟BGP RR二级路由反射器的典型组网配置。其中SW1、SW2、SW3属于AS100，SW4属于AS200，由于SW1、SW2与SW4没有互联，同时又想实现PC之间的互通，因此需要使用BGP RR二级路由反射器来实现。SW2是SW1的一级RR反射，SW3是SW2的二级反射。SW1与SW2，SW2与SW3建立IBGP邻居关系，为了SW1与SW2，SW2与SW3建立IBGP邻居关系及RR路由反射，因此SW1、SW2、SW3之间建立OSPF邻居关系来进行承载。最后SW3与SW4建立EBGP邻居关系。

IP地址规划：

SW1：

<H3C>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]int vlan 10

[SW1-Vlan-interface10]ip address 192.168.10.1 24

[SW1-Vlan-interface10]quit

[SW1]int gi 1/0/1

[SW1-GigabitEthernet1/0/1]port link-type access

[SW1-GigabitEthernet1/0/1]port access vlan 10

[SW1-GigabitEthernet1/0/1]quit

[SW1]int gi 1/0/2

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

[SW1-GigabitEthernet1/0/2]des <connect to SW2>

[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 2.2.2.2 as-number 100

[SW1-bgp-default]peer 2.2.2.2 connect-interface LoopBack 0

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

[SW1-bgp-default-ipv4]peer 2.2.2.2 enable

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

[SW1-bgp-default-ipv4]quit

[SW1-bgp-default]quit

SW2：

<H3C>sys

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

[H3C]sysname SW2

[SW2]int loopback 0

[SW2-LoopBack0]ip address 2.2.2.2 32

[SW2-LoopBack0]quit

[SW2]int gi 1/0/2

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

[SW2-GigabitEthernet1/0/2]des <connect to SW1>

[SW2-GigabitEthernet1/0/2]ip address 10.0.0.2 30

[SW2-GigabitEthernet1/0/2]quit

[SW2]int gi 1/0/1

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

[SW2-GigabitEthernet1/0/1]des <connect to SW3>

[SW2-GigabitEthernet1/0/1]ip address 10.0.0.5 30

[SW2-GigabitEthernet1/0/1]quit

[SW2]ospf 1 router-id 2.2.2.2

[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 10.0.0.5 0.0.0.0

[SW2-ospf-1-area-0.0.0.0]network 2.2.2.2 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 2.2.2.2

[SW2-bgp-default]peer 3.3.3.3 as-number 100

[SW2-bgp-default]peer 3.3.3.3 connect-interface LoopBack 0

[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]address-family ipv4 unicast

[SW2-bgp-default-ipv4]peer 3.3.3.3 enable

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

[SW2-bgp-default-ipv4]peer 1.1.1.1 reflect-client  //指定1.1.1.1为反射器的客户端

[SW2-bgp-default-ipv4]quit

[SW2-bgp-default]quit

SW3：

<H3C>sys

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

[H3C]sysname SW3

[SW3]int loopback 0

[SW3-LoopBack0]ip address 3.3.3.3 32

[SW3-LoopBack0]quit

[SW3]router id 3.3.3.3

[SW3]int gi 1/0/1

[SW3-GigabitEthernet1/0/1]port link-mode route

[SW3-GigabitEthernet1/0/1]des <connect to SW2>

[SW3-GigabitEthernet1/0/1]ip address 10.0.0.6 30

[SW3-GigabitEthernet1/0/1]quit

[SW3]int gi 1/0/2

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

[SW3-GigabitEthernet1/0/2]des <connect to SW4>

[SW3-GigabitEthernet1/0/2]ip address 10.0.0.9 30

[SW3-GigabitEthernet1/0/2]quit

[SW3]ospf 1 router-id 3.3.3.3

[SW3-ospf-1]area 0.0.0.0

[SW3-ospf-1-area-0.0.0.0]network 10.0.0.6 0.0.0.0

[SW3-ospf-1-area-0.0.0.0]network 10.0.0.9 0.0.0.0

[SW3-ospf-1-area-0.0.0.0]network 3.3.3.3 0.0.0.0

[SW3-ospf-1-area-0.0.0.0]quit

[SW3-ospf-1]quit

[SW3]bgp 100

[SW3-bgp-default]router-id 3.3.3.3

[SW3-bgp-default]peer 2.2.2.2 as-number 100

[SW3-bgp-default]peer 2.2.2.2 connect-interface LoopBack 0

[SW3-bgp-default]peer 10.0.0.10 as-number 200

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

[SW3-bgp-default-ipv4]peer 10.0.0.10 enable

[SW3-bgp-default-ipv4]peer 2.2.2.2 enable

[SW3-bgp-default-ipv4]peer 2.2.2.2 reflect-client  //指定2.2.2.2为RR反射器的客户端

[SW3-bgp-default-ipv4]quit

[SW3-bgp-default]quit

SW4：

<H3C>sys

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

[H3C]sysname SW4

[SW4]int loopback 0

[SW4-LoopBack0]ip address 4.4.4.4 32

[SW4-LoopBack0]quit

[SW4]router id 4.4.4.4

[SW4]vlan 100

[SW4-vlan100]quit

[SW4]int vlan 100

[SW4-Vlan-interface100]ip address 172.16.10.1 24

[SW4-Vlan-interface100]quit

[SW4]int gi 1/0/1

[SW4-GigabitEthernet1/0/1]port link-type access

[SW4-GigabitEthernet1/0/1]port access vlan 100

[SW4-GigabitEthernet1/0/1]quit

[SW4]int gi 1/0/2

[SW4-GigabitEthernet1/0/2]port link-mode route

[SW4-GigabitEthernet1/0/2]des <connect to SW3>

[SW4-GigabitEthernet1/0/2]ip address 10.0.0.10 30

[SW4-GigabitEthernet1/0/2]quit

[SW4]bgp 200

[SW4-bgp-default]router-id 4.4.4.4

[SW4-bgp-default]peer 10.0.0.9 as-number 100

[SW4-bgp-default]address-family ipv4 unicast

[SW4-bgp-default-ipv4]peer 10.0.0.9 enable

[SW4-bgp-default-ipv4]network 172.16.10.0 255.255.255.0

[SW4-bgp-default-ipv4]quit

[SW4-bgp-default]quit

测试：

所有PC都填写IP地址：

PC之间可以相互PING通：

分别查看SW1、SW2、SW3的OSPF邻居信息：

分别查看SW1、SW2、SW3、SW4的BGP邻居信息：

分别查看SW1、SW2、SW3、SW4的路由表：

至此，S5820 BGP RR二级路由反射器典型组网配置已完成！