FW2、FW1、AR3、AR1间部署IBGP,AS号为100, AR2与FW1，AR4与FW2用EBGP使用Loopback接口建立Peer，建立全互联的BGP邻居;链路信息是：AR2连接FW1连接AR1连接AR3连接FW2连接AR4设备上的地址是：AR2的loopback0：3.3.3.3 gig0/0/0：10.1.0.1 FW1的loopback0 4.4.4.4 gig0/0/2与AR2相连接地址是：10.1.0.2，gig0/0/0与AR1相连接地址是：10.2.0.1，AR2的loopback0是5.5.5.5 gig0/0/2与FW1相连接的10.2.0.2 gig0/0/0与AR3相连接地址是10.3.0.1 ，AR3的loopback0是6.6.6.6 gig0/0/2与AR1相连接的10.3.0.2 gig0/0/0与AR3相连接地址是10.5.0.1 ,FW2的loopback0是7.7.7.7 gig0/0/2与AR3相连接的10.5.0.2 gig0/0/0与AR4相连接地址是10.6.0.1 ,AR4的loopback0是8.8.8.8 gig0/0/2与FW2相连接的10.6.0.2,我用的是神州数码的设备，建立邻居都必须用loopback0应该怎么具体配置它呢

根您提供的网络拓扑和设备信息，下面是每个设备的BGP配置步骤：

1. AR1配置：

interface GigabitEthernet0/0/0
 ip address 10.2.0.1 255.255.255.0
!
router bgp 100
 bgp router-id 1.1.1.1
 network 10.2.0.0 mask 255.255.255.0
 neighbor 6.6.6.6 remote-as 100
 neighbor 6.6.6.6 update-source Loopback0
 neighbor 4.4.4.4 remote-as 100
 neighbor 4.4.4.4 update-source Loopback0

2. AR2配置：

interface GigabitEthernet0/0/0
 ip address 10.1.0.1 255.255.255.0
!
router bgp 100
 bgp router-id 5.5.5.5
 network 10.1.0.0 mask 255.255.255.0
 neighbor 3.3.3.3 remote-as 100
 neighbor 3.3.3.3 update-source Loopback0
 neighbor 4.4.4.4 remote-as 100
 neighbor 4.4.4.4 update-source Loopback0

3. AR3配置：

interface GigabitEthernet0/0/0
 ip address 10.3.0.1 255.255.255.0
!
router bgp 100
 bgp router-id 6.6.6.6
 network 10.3.0.0 mask 255.255.255.0
 neighbor 5.5.5.5 remote-as 100
 neighbor 5.5.5.5 update-source Loopback0
 neighbor 7.7.7.7 remote-as 100
 neighbor 7.7.7.7 update-source Loopback0

4. AR4配置：

interface GigabitEthernet0/0/2
 ip address 10.6.0.2 255.255.255.0
!
router bgp 100
 bgp router-id 8.8.8.8
 network 10.6.0.0 mask 255.255.255.0
 neighbor 6.6.6.6 remote-as 100
 neighbor 6.6.6.6 update-source Loopback0
 neighbor 7.7.7.7 remote-as 100
 neighbor 7.7.7.7 update-source Loopback0

5. FW1配置：

interface GigabitEthernet0/0/2
 ip address 10.2.0.2 255.255.255.0
!
router bgp 100
 bgp router-id 4.4.4.4
 network 10.2.0.0 mask 255.255.255.0
 neighbor 5.5.5.5 remote-as 100
 neighbor 5.5.5.5 update-source Loopback0

6. FW2配置：

interface GigabitEthernet0/0/2
 ip address 10.6.0.1 255.255.255.0
!
router bgp 100
 bgp router-id 7.7.7.7
 network 10.6.0.0 mask 255.255.255.0
 neighbor 5.5.5.5 remote-as 100
 neighbor 5.5.5.5 update-source Loopback0

在这些设备上配置完BGP之后，您可以通过show命令来查看BGP邻居状态和路由信息，如下所示：

show bgp summary
show ip bgp

希望这些信息对您有所帮助。