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  3. USG6300 举例：配置BGP4+的基本功能

USG6300 举例：配置BGP4+的基本功能

日期：2023-03-26　 浏览次数：295 次

在不同的AS之间配置BGP4+实现两个AS网络之间可进行路由交互。

组网需求

如图1所示，在IPv6网络环境中，FW_A为企业的防火墙兼出口网关。FW_A通过运营商网络连接到Internet。企业内网的设备之间运行IBGP协议。

运营商网络内部也为IPv6网络。运营商的边界路由器（Router）已配置BGP功能。

FW_A与Router之间建立EBGP连接。

图1 配置BGP4+基本组网图

项目

数据
FW_A

接口号：GigabitEthernet 1/0/1

IP地址：10::1/64

安全区域：Untrust

接口号：GigabitEthernet 1/0/2

IP地址：9:3::1/64

安全区域：Trust

接口号：GigabitEthernet 1/0/3

IP地址：9:1::1/64

安全区域：Trust
FW_B

接口号：GigabitEthernet 1/0/1

IP地址：9:3::2/64

安全区域：Untrust

接口号：GigabitEthernet 1/0/3

IP地址：9:2::1/64

安全区域：Trust
FW_C

接口号：GigabitEthernet 1/0/1

IP地址：9:1::2/64

安全区域：Untrust

接口号：GigabitEthernet 1/0/3

IP地址：9:2::2/64

安全区域：Trust

配置思路

采用如下思路配置BGP4+基本功能：

  1. 配置各接口基本参数，实现互连链路互通。
  2. 配置域间安全策略，保证内网用户能够访问Internet资源。

  3. 在FW_A、FW_B、FW_C之间配置IBGP连接。

  4. 在Router和FW_A之间配置EBGP连接。

 

操作步骤

  1. 配置各接口的IPv6地址，如图1所示。

     

    # 配置FW_A。

    <FW> system-view
[FW] sysname FW_A
[FW_A] ipv6
[FW_A] interface GigabitEthernet1/0/1
[FW_A-GigabitEthernet1/0/1] ipv6 enable
[FW_A-GigabitEthernet1/0/1] ipv6 address 10::1 64
[FW_A-GigabitEthernet1/0/1] quit
[FW_A] interface GigabitEthernet1/0/2
[FW_A-GigabitEthernet1/0/2] ipv6 enable
[FW_A-GigabitEthernet1/0/2] ipv6 address 9:3::1 64
[FW_A-GigabitEthernet1/0/2] quit
[FW_A] interface GigabitEthernet1/0/3
[FW_A-GigabitEthernet1/0/3] ipv6 enable
[FW_A-GigabitEthernet1/0/3] ipv6 address 9:1::1 64
[FW_A-GigabitEthernet1/0/3] quit

    # 配置FW_B。

    <FW> system-view
[FW] sysname FW_B
[FW_B] ipv6
[FW_B] interface GigabitEthernet1/0/1
[FW_B-GigabitEthernet1/0/1] ipv6 enable
[FW_B-GigabitEthernet1/0/1] ipv6 address 9:3::2 64
[FW_B-GigabitEthernet1/0/1] quit
[FW_B] interface GigabitEthernet1/0/3
[FW_B-GigabitEthernet1/0/3] ipv6 enable
[FW_B-GigabitEthernet1/0/3] ipv6 address 9:2::1 64
[FW_B-GigabitEthernet1/0/3] quit

    # 配置FW_C。

    <FW> system-view
[FW] sysname FW_C
[FW_C] ipv6
[FW_C] interface GigabitEthernet1/0/1
[FW_C-GigabitEthernet1/0/1] ipv6 enable
[FW_C-GigabitEthernet1/0/1] ipv6 address 9:1::2 64
[FW_C-GigabitEthernet1/0/1] quit
[FW_C] interface GigabitEthernet1/0/3
[FW_C-GigabitEthernet1/0/3] ipv6 enable
[FW_C-GigabitEthernet1/0/3] ipv6 address 9:2::2 64
[FW_C-GigabitEthernet1/0/3] quit

     

  2. 将各接口加入安全区域。如图1所示。

     

    # 配置FW_A。

    [FW_A] firewall zone trust
[FW_A-zone-trust] add interface GigabitEthernet1/0/2
[FW_A-zone-trust] add interface GigabitEthernet1/0/3
[FW_A-zone-trust] quit
[FW_A] firewall zone untrust
[FW_A-zone-untrust] add interface GigabitEthernet1/0/1
[FW_A-zone-untrust] quit

    # 配置FW_B。

    [FW_B] firewall zone trust
[FW_B-zone-trust] add interface GigabitEthernet1/0/3
[FW_B-zone-trust] quit
[FW_B] firewall zone untrust
[FW_B-zone-untrust] add interface GigabitEthernet1/0/1
[FW_B-zone-untrust] quit

    # 配置FW_C。

    [FW_C] firewall zone trust
[FW_C-zone-trust] add interface GigabitEthernet1/0/3
[FW_C-zone-trust] quit
[FW_C] firewall zone untrust
[FW_C-zone-untrust] add interface GigabitEthernet1/0/1
[FW_C-zone-untrust] quit

     

  3. 开启域间安全策略。以FW_A为例，其余设备配置与此相同。

     

    此处只给出了完成本举例所需的安全策略的基本参数，具体使用时，请根据实际情况设置安全策略中的其他参数。

    # 开启从Trust到Untrust、从Local到Untrust和从Untrust到Local安全区域的域间策略，保证报文能够正常发送。

    [FW_A] security-policy
[FW_A-policy-security] rule name policy_sec_1
[FW_A-policy-security-rule-policy_sec_1] source-zone trust
[FW_A-policy-security-rule-policy_sec_1] destination-zone untrust
[FW_A-policy-security-rule-policy_sec_1] action permit
[FW_A-policy-security-rule-policy_sec_1] quit
[FW_A-policy-security] rule name policy_sec_2
[FW_A-policy-security-rule-policy_sec_2] source-zone local untrust
[FW_A-policy-security-rule-policy_sec_2] destination-zone local untrust
[FW_A-policy-security-rule-policy_sec_2] action permit
[FW_A-policy-security-rule-policy_sec_2] quit
[FW_A-policy-security] quit

     

  4. 配置IBGP。

     

    # 配置FW_A。

    [FW_A] ipv6
[FW_A] bgp 10
[FW_A-bgp] router-id 2.2.2.2
[FW_A-bgp] peer 9:1::2 as-number 10
[FW_A-bgp] peer 9:3::2 as-number 10
[FW_A-bgp] ipv6-family
[FW_A-bgp-af-ipv6] peer 9:1::2 enable
[FW_A-bgp-af-ipv6] peer 9:3::2 enable
[FW_A-bgp-af-ipv6] network 9:1:: 64
[FW_A-bgp-af-ipv6] network 9:3:: 64

    # 配置FW_B。

    [FW_B] ipv6
[FW_B] bgp 10
[FW_B-bgp] router-id 3.3.3.3
[FW_B-bgp] peer 9:3::1 as-number 10
[FW_B-bgp] peer 9:2::2 as-number 10
[FW_B-bgp] ipv6-family
[FW_B-bgp-af-ipv6] peer 9:3::1 enable
[FW_B-bgp-af-ipv6] peer 9:2::2 enable
[FW_B-bgp-af-ipv6] network 9:3:: 64
[FW_B-bgp-af-ipv6] network 9:2:: 64

    # 配置FW_C。

    [FW_C] ipv6
[FW_C] bgp 10
[FW_C-bgp] router-id 4.4.4.4
[FW_C-bgp] peer 9:1::1 as-number 10
[FW_C-bgp] peer 9:2::1 as-number 10
[FW_C-bgp] ipv6-family
[FW_C-bgp-af-ipv6] peer 9:1::1 enable
[FW_C-bgp-af-ipv6] peer 9:2::1 enable
[FW_C-bgp-af-ipv6] network 9:2:: 64
[FW_C-bgp-af-ipv6] network 9:1:: 64

     

  5. 配置FW_A的EBGP。

     

    [FW_A] bgp 10
[FW_A-bgp] peer 10::2 as-number 20
[FW_A-bgp] ipv6-family
[FW_A-bgp-af-ipv6] peer 10::2 enable
[FW_A-bgp-af-ipv6] network 10:: 64

     

 

结果验证

  • 查看BGP4+对等体的连接状态，以FW_A为例。

    出现以下显示说明FW_A到FW_B、FW_C以及Router的BGP4+连接均已建立。

    [FW_A] display bgp ipv6 peer

 BGP local router ID : 2.2.2.2
 Local AS number : 10
 Total number of peers : 3                 Peers in established state : 3

  Peer            V    AS  MsgRcvd  MsgSent  OutQ  Up/Down       State PrefRcv

  9:1::2          4 10        8        9     0 00:05:37 Established       0
  9:3::2          4 10        2        2     0 00:00:09 Established       0
  10::2           4 20        9        7     0 00:05:38 Established       0
  • 查看Router的路由表，可以看出Router学到了AS 10中的路由。

 

配置脚本

  • FW_A的配置脚本

    #
 sysname FW_A
#
 ipv6
#
interface GigabitEthernet 1/0/1
 ipv6 enable
 ipv6 address 10::1/64
#
interface GigabitEthernet 1/0/2
 ipv6 enable
 ipv6 address 9:3::1/64
#
interface GigabitEthernet 1/0/3
 ipv6 enable
 ipv6 address 9:1::1/64
#
firewall zone trust
 set priority 85
 add interface GigabitEthernet 1/0/2
 add interface GigabitEthernet 1/0/3
#
firewall zone untrust 
 set priority 5 
 add interface GigabitEthernet 1/0/1
#
bgp 10
 router-id 2.2.2.2
 peer 9:1::2 as-number 10
 peer 9:3::2 as-number 10
 peer 10::2 as-number 20
 ipv4-family
  undo synchronization
#
 ipv6-family
  network 9:1:: 64
  network 9:3:: 64
  network 10:: 64
  peer 9:1::2 enable
  peer 9:3::2 enable
  peer 10::2 enable
#
security-policy
  rule name policy_sec_1
    source-zone trust
    destination-zone untrust
    action permit
  rule name policy_sec_2
    source-zone local
    source-zone untrust
    destination-zone local
    destination-zone untrust
    action permit

  • FW_B的配置脚本

    #
 sysname FW_B
#
 ipv6
#
interface GigabitEthernet 1/0/1
 ipv6 enable
 ipv6 address 9:3::2/64
#
interface GigabitEthernet 1/0/3
 ipv6 enable
 ipv6 address 9:2::1/64
#
firewall zone trust
 set priority 85
 add interface GigabitEthernet 1/0/3
#
firewall zone untrust 
 set priority 5 
 add interface GigabitEthernet 1/0/1
#
bgp 10
router-id 3.3.3.3
 peer 9:2::2 as-number 10
 peer 9:3::1 as-number 10
#
 ipv4-family
  undo synchronization
#
 ipv6-family
  network 9:2:: 64
  network 9:3:: 64
  peer 9:2::2 enable
  peer 9:3::1 enable
#
security-policy
  rule name policy_sec_1
    source-zone trust
    destination-zone untrust
    action permit
  rule name policy_sec_2
    source-zone local
    source-zone untrust
    destination-zone local
    destination-zone untrust
    action permit

  • FW_C的配置脚本

    #
 sysname FW_C
#
 ipv6
#
interface GigabitEthernet 1/0/1
 ipv6 enable
 ipv6 address 9:1::2/64
#
interface GigabitEthernet 1/0/3
 ipv6 enable
 ipv6 address 9:2::2/64
#
firewall zone trust
 set priority 85
 add interface GigabitEthernet 1/0/3
#
firewall zone untrust 
 set priority 5 
 add interface GigabitEthernet 1/0/1
#
bgp 10
 router-id 4.4.4.4
 peer 9:1::1 as-number 10
 peer 9:2::1 as-number 10
#
 ipv4-family
  undo synchronization
#
 ipv6-family
  network 9:1:: 64
  network 9:2:: 64
  peer 9:1::1 enable
  peer 9:2::1 enable
#
security-policy
  rule name policy_sec_1
    source-zone trust
    destination-zone untrust
    action permit
  rule name policy_sec_2
    source-zone local
    source-zone untrust
    destination-zone local
    destination-zone untrust
    action permit

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