使用eNSP构建calico BGP网络

实验文件： [calico BGP.zip](https://cdn.jsdelivr.net/gh/CylonChau/imgbed/img/calico BGP.zip)

R1

system-view 
sysname R1

interface l0
ip address 1.1.1.1 32

interface g0/0/0
ip address 10.1.0.1 24

interface g0/0/1
ip address 10.3.0.1 24

bgp 100
router-id 1.1.1.1
peer 10.1.0.2 as-number 123
peer 10.3.0.2 as-number 456
dis this
dis ip interface b

R2

system-view 
sysname R2

interface l0
ip address 2.2.2.2 32

interface g0/0/0
ip address 10.2.0.1 24

interface g0/0/1
ip address 10.4.0.1 24

bgp 200
router-id 2.2.2.2
peer 10.4.0.2 as-number 123
peer 10.2.0.2 as-number 456
dis ip interface b

从下至上配置

R3

system-view 
sysname R3

interface l0
ip address 3.3.3.3 32

interface g0/0/0
ip address 10.1.0.2 24

interface g0/0/1
ip address 10.5.0.1 24

vlan 2
int vlan 2
ip address 10.6.0.1 24
in e0/0/0
port link-type access 
port default vlan 2
dis ip interface brief

vlan 3
int vlan 3
ip address 10.4.0.2 24
in e0/0/1
port link-type access 
port default vlan 3
dis ip interface brief 

ospf router-id 3.3.3.3
area 0
network 10.1.0.0 0.0.0.255
network 10.5.0.0 0.0.0.255
network 3.3.3.3 0.0.0.0
network 10.4.0.0 0.0.0.255
network 10.6.0.0 0.0.0.255
dis this

bgp 123
router-id 3.3.3.3
peer 5.5.5.5 as-number 123
peer 5.5.5.5 connect-interface l0
peer 6.6.6.6 as-number 123
peer 6.6.6.6 connect-interface l0
dis this
peer 5.5.5.5 reflect-client
peer 6.6.6.6 reflect-client

peer 10.1.0.1 as-number 100
peer 10.4.0.1 as-number 200
dis this

R5

注意这里OSPF宣告的路由，OSPF优先级高于BGP，此处不能宣告0.0.0.0 255.255.255.255

system-view 
sysname R5

interface l0
ip address 5.5.5.5 32
quit

vlan 2
int vlan 2
ip address 10.5.0.2 24
in e0/0/0
port link-type access 
port default vlan 2

dis ip interface brief 

ospf router-id 5.5.5.5
area 0
network 5.5.5.5 0.0.0.0
network 10.5.0.0 0.0.0.255
dis this

bgp 123
router-id 5.5.5.5
peer 3.3.3.3 as-number 123
peer 3.3.3.3 connect-interface l0
dis this

R6

system-view 
sysname R6

interface l0
ip address 6.6.6.6 32
quit

vlan 2
int vlan 2
ip address 10.6.0.2 24
in e0/0/0
port link-type access 
port default vlan 2

dis ip interface brief 

ospf router-id 6.6.6.6
area 0
network 6.6.6.6 0.0.0.0
network 10.6.0.0 0.0.0.255
dis this

bgp 123
router-id 6.6.6.6
peer 3.3.3.3 as-number 123
peer 3.3.3.3 connect-interface l0
dis this

R4

system-view 
sysname R4

interface l0
ip address 4.4.4.4 32

interface g0/0/0
ip address 10.2.0.2 24

interface g0/0/1
ip address 10.7.0.1 24

vlan 2
int vlan 2
ip address 10.8.0.1 24
in e0/0/0
port link-type access 
port default vlan 2
dis ip interface brief

vlan 3
int vlan 3
ip address 10.3.0.2 24
in e0/0/1
port link-type access 
port default vlan 3
dis ip interface brief 

ospf router-id 4.4.4.4
area 0
network 10.2.0.0 0.0.0.255
network 10.3.0.0 0.0.0.255
network 4.4.4.4 0.0.0.0
network 10.7.0.0 0.0.0.255
network 10.8.0.0 0.0.0.255
dis this

bgp 456
router-id 4.4.4.4
peer 7.7.7.7 as-number 456
peer 7.7.7.7 connect-interface l0
peer 8.8.8.8 as-number 456
peer 8.8.8.8 connect-interface l0
dis this
peer 7.7.7.7 reflect-client
peer 8.8.8.8 reflect-client

peer 10.3.0.1 as-number 100
peer 10.2.0.1 as-number 200
dis this

R7

system-view 
sysname R7

interface l0
ip address 7.7.7.7 32
quit

vlan 2
int vlan 2
ip address 10.7.0.2 24
in e0/0/0
port link-type access 
port default vlan 2

dis ip interface brief 

ospf router-id 7.7.7.7
area 0
network 7.7.7.7 0.0.0.0
network 10.7.0.0 0.0.0.255
dis this

bgp 456
router-id 7.7.7.7
peer 4.4.4.4 as-number 456
peer 4.4.4.4 connect-interface l0
dis this

R8

system-view 
sysname R8

interface l0
ip address 8.8.8.8 32

interface g0/0/0
ip address 10.8.0.2 24

dis ip interface brief 

ospf router-id 8.8.8.8
area 0
network 8.8.8.8 0.0.0.0
network 10.8.0.0 0.0.0.255
dis this

bgp 456
router-id 8.8.8.8
peer 4.4.4.4 as-number 456
peer 4.4.4.4 connect-interface l0
dis this

在R7与R5各添加一条路由

interface L11
ip address 77.77.77.77 32
quit
bgp 456
network 77.77.77.77 255.255.255.255

interface L11
ip address 55.55.55.55 32
quit
bgp 123
network 55.55.55.55 255.255.255.255

可以看到R1 R2 与 R6 R8都通过对应的bgp协议学习到相应的路由。

[R2]dis bgp routing-table 

 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

 Total Number of Routes: 4
      Network            NextHop        MED        LocPrf  PrefVal Path/Ogn
 *>   55.55.55.55/32     10.4.0.2                            0      123i
 *                       10.2.0.2                            0      456 100 123i
 *>   77.77.77.77/32     10.2.0.2                            0      456i
 *                       10.4.0.2                            0      123 100 456i


[R6-bgp]dis bgp routing-table 

 BGP Local router ID is 6.6.6.6 
 Status codes: * - valid, > - best, d - damped,
               h - history,  i - internal, s - suppressed, S - Stale
               Origin : i - IGP, e - EGP, ? - incomplete

 Total Number of Routes: 2
      Network            NextHop        MED        LocPrf    PrefVal Path/Ogn
 *>i  55.55.55.55/32     5.5.5.5         0          100        0      i
 *>i  77.77.77.77/32     10.1.0.1                   100        0      100 456i
[R6-bgp]

遇到问题：

vlan未启动，需要查看对应绑定的端口是否正确

ospf配置错误，undo ospf 1 重启ospf