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10-可靠性配置举例

目录

02-H3C_CFD典型配置举例

本章节下载 02-H3C_CFD典型配置举例  (294.06 KB)

02-H3C_CFD典型配置举例

H3C 以太网OAM典型配置举例

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

资料版本:6W100-20200330

产品版本:Release 7585P05

 

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1  简介

本文档介绍通过在网络中使用CFD功能,可以实现在二层网络中检测链路连通性,确认故障并确定故障发生的位置。

2  配置前提

本文档中的配置均是在实验室环境下进行的配置和验证,配置前设备的所有参数均采用出厂时的缺省配置。如果您已经对设备进行了配置,为了保证配置效果,请确认现有配置和以下举例中的配置不冲突。

本文档假设您已了解CFD特性。

3  配置举例

3.1  组网需求

某公司网络如图1所示,设备Device B、Device C位于中央机房,设备Device A、Device D、Device E分布在其它区域。VLAN 20内的用户(研发部)分别通过Device A和Device D接入公司网络,VLAN 30内的用户(市场部)分别通过Device A和Device E接入公司网络。

现要求在该网络中配置CFD功能,实现当某条链路发生故障,CFD功能能够确认故障并对故障进行定位。

图1 组网示意图

 

3.2  配置思路

·            为了较好的规划CFD功能所作用的区域,可以根据设备所在的位置来划分MD(便于故障定位)。根据各MD的范围来确定MD的级别,确保低级别MD嵌套于高级别MD中。本案例将公司整个网络划分为MD_A(level 5),将中央机房的网络划分为MD_B(level 3)。

·            为了较好的规划CFD功能所作用的区域,可以根据业务流量所属的VLAN来划分MA。本案例中将MD_A的VLAN 20划分为MA_A_1,MD_A的VLAN 30划分为MA_A_2;将MD_B的VLAN 20划分为MA_B_1,MD_B的VLAN 30划分为MA_B_2。

·            为了实现CFD能够检测网络的链路连通性的功能,需要在位于MA边界的接口上配置MEP,并根据该接口对CFD协议报文的发送情况确定MEP的类型。

¡  例如,MA_B_1所对应的VLAN为VLAN 20,位于MA_B_1允许VLAN 20通过的接口有Device B的接口XGE3/0/1和XGE3/0/2、Device C的接口XGE3/0/1和XGE3/0/2、Device D的接口XGE3/0/1。可以看出MA_B_1的边界的接口分别为Device B的接口XGE3/0/1和Device D的接口XGE3/0/1,因此我们需要在这两个接口上配置MEP;

¡  由于Device B的接口XGE3/0/1发送的CFD协议报文需要从本设备其他接口转发出去,因此该接口需配置为内向MEP;而Device D的XGE3/0/1发送的CFD协议报文直接从该接口发送出去,该接口需配置为外向MEP。

·            由于Device C为MD_B的中间设备,为了准确定位Device B和Device D之间链路故障,需要在Device C上配置MIP,并选择合适的MIP生成规则。本例中,将Device C作为MIP,创建规则为default规则。

·            为了检测各MA内的MEP之间的连通状态,需要开启连续性检测功能。

·            当CFD的连续性检测功能检测到链路故障时,可以使用环回功能进行故障确认,并在获取到整个组网的状态后,使用链路跟踪功能进行路径查找或故障定位。

综合以上配置思路,配置CFD功能示意图如图2所示。

图2 CFD功能示意图

 

3.3  配置注意事项

·            在创建MEP时,该MEP的ID必须已包含在对应服务实例的MEP列表中,否则不能创建成功。

·            一个MD内可以有多个MA,但一个MA只能与一个检测VLAN进行关联。

·            同一MA中所有MEP发送的CCM报文中时间间隔域的值必须相同。本案例中不对MEP发送的CCM报文中时间间隔域进行修改,即均采用缺省配置。

3.4  配置步骤

3.4.1  开启CFD功能

# 在Device A上开启CFD功能。

<DeviceA> system-view

[DeviceA] cfd enable

Device B~Device E的配置与Device A相同,配置过程略。

3.4.2  配置VLAN与接口

1. Device A的配置

[DeviceA] vlan 20

[DeviceA-vlan20] quit

[DeviceA] vlan 30

[DeviceA-vlan30] quit

[DeviceA] interface ten-gigabitethernet 3/0/1

[DeviceA-Ten-GigabitEthernet3/0/1] port access vlan 20

[DeviceA-Ten-GigabitEthernet3/0/1] quit

[DeviceA] interface ten-gigabitethernet 3/0/2

[DeviceA-Ten-GigabitEthernet3/0/2] port access vlan 30

[DeviceA-Ten-GigabitEthernet3/0/2] quit

[DeviceA] interface ten-gigabitethernet 3/0/3

[DeviceA-Ten-GigabitEthernet3/0/3] port link-type trunk

[DeviceA-Ten-GigabitEthernet3/0/3] port trunk permit vlan 20 30

[DeviceA-Ten-GigabitEthernet3/0/3] quit

2. Device B的配置

[DeviceB] vlan 20

[DeviceB-vlan20] quit

[DeviceB] vlan 30

[DeviceB-vlan30] quit

[DeviceB] interface ten-gigabitethernet 3/0/1

[DeviceB-Ten-GigabitEthernet3/0/1] port link-type trunk

[DeviceB-Ten-GigabitEthernet3/0/1] port trunk permit vlan 20 30

[DeviceB-Ten-GigabitEthernet3/0/1] quit

[DeviceB] interface ten-gigabitethernet 3/0/2

[DeviceB-Ten-GigabitEthernet3/0/2] port link-type trunk

[DeviceB-Ten-GigabitEthernet3/0/2] port trunk permit vlan 20

[DeviceB-Ten-GigabitEthernet3/0/2] quit

[DeviceB] interface ten-gigabitethernet 3/0/3

[DeviceB-Ten-GigabitEthernet3/0/3] port link-type trunk

[DeviceB-Ten-GigabitEthernet3/0/3] port trunk permit vlan 30

[DeviceB-Ten-GigabitEthernet3/0/3] quit

3. Device C的配置

[DeviceC] vlan 20

[DeviceC-vlan20] quit

[DeviceC] interface ten-gigabitethernet 3/0/1

[DeviceC-Ten-GigabitEthernet3/0/1] port link-type trunk

[DeviceC-Ten-GigabitEthernet3/0/1] port trunk permit vlan 20

[DeviceC-Ten-GigabitEthernet3/0/1] quit

[DeviceC] interface ten-gigabitethernet 3/0/2

[DeviceC-Ten-GigabitEthernet3/0/2] port link-type trunk

[DeviceC-Ten-GigabitEthernet3/0/2] port trunk permit vlan 20

[DeviceC-Ten-GigabitEthernet3/0/2] quit

4. Device D的配置

[DeviceD] vlan 20

[DeviceD-vlan20] quit

[DeviceD] interface ten-gigabitethernet 3/0/1

[DeviceD-Ten-GigabitEthernet3/0/1] port link-type trunk

[DeviceD-Ten-GigabitEthernet3/0/1] port trunk permit vlan 20

[DeviceD-Ten-GigabitEthernet3/0/1] quit

[DeviceD] interface ten-gigabitethernet 3/0/2

[DeviceD-Ten-GigabitEthernet3/0/2] port access vlan 20

[DeviceD-Ten-GigabitEthernet3/0/2] quit

5. Device E的配置

[DeviceE] vlan 30

[DeviceE-vlan30] quit

[DeviceE] interface ten-gigabitethernet 3/0/1

[DeviceE-Ten-GigabitEthernet3/0/1] port access vlan 30

[DeviceE-Ten-GigabitEthernet3/0/1] quit

[DeviceE] interface ten-gigabitethernet 3/0/2

[DeviceE-Ten-GigabitEthernet3/0/2] port link-type trunk

[DeviceE-Ten-GigabitEthernet3/0/2] port trunk permit vlan 30

[DeviceE-Ten-GigabitEthernet3/0/2] quit

3.4.3  配置服务实例

根据CFD功能示意图中每台设备上的接点所属的MD中的MA,共需要完成表1配置。

表1 关系对应表

设备

MD

MD级别

MA

VLAN

服务实例

Device A

MD_A

5

MA_A_1

20

1

MA_A_2

30

2

Device B

MD_B

3

MA_B_1

20

3

MA_B_2

30

4

Device C

MD_B

3

MA_B_1

20

3

Device D

MD_A

5

MA_A_1

20

1

MD_B

3

MA_B_1

20

3

Device E

MD_A

5

MA_A_2

30

2

MD_B

3

MA_B_2

30

4

 

1. Device A的配置

# 在Device A上创建级别为5的MD,MD名称为MD_A。

[DeviceA] cfd md MD_A level 5

# 创建服务实例1,该服务实例的MA名称为MA_A_1,且服务于VLAN 20。

[DeviceA] cfd service-instance 1 ma-id string MA_A_1 md MD_A vlan 20

# 创建服务实例2,该服务实例的MA名称为MA_A_2,且服务于VLAN 30。

[DeviceA] cfd service-instance 2 ma-id string MA_A_2 md MD_A vlan 30

Device B~Device E的配置与Device A相似。

2. Device B的配置

[DeviceB] cfd md MD_B level 3

[DeviceB] cfd service-instance 3 ma-id string MA_B_1 md MD_B vlan 20

[DeviceB] cfd service-instance 4 ma-id string MA_B_2 md MD_B vlan 30

3. Device C的配置

[DeviceC] cfd md MD_B level 3

[DeviceC] cfd service-instance 3 ma-id string MA_B_1 md MD_B vlan 20

4. Device D的配置

[DeviceD] cfd md MD_A level 5

[DeviceD] cfd service-instance 1 ma-id string MA_A_1 md MD_A vlan 20

[DeviceD] cfd md MD_B level 3

[DeviceD] cfd service-instance 3 ma-id string MA_B_1 md MD_B vlan 20

5. Device E的配置

[DeviceE] cfd md MD_A level 5

[DeviceE] cfd service-instance 2 ma-id string MA_A_2 md MD_A vlan 30

[DeviceE] cfd md MD_B level 3

[DeviceE] cfd service-instance 4 ma-id string MA_B_2 md MD_B vlan 30

3.4.4  配置MEP

MEP ID分配如表2所示。

表2 MEP ID分配表

服务实例

设备

接口

MEP ID

MEP类型

1

DeviceA

Ten-GigabitEthernet3/0/1

1001

内向MEP

DeviceD

Ten-GigabitEthernet3/0/2

1002

内向MEP

2

DeviceA

Ten-GigabitEthernet3/0/2

2001

内向MEP

DeviceE

Ten-GigabitEthernet3/0/1

2002

内向MEP

3

DeviceB

Ten-GigabitEthernet3/0/1

3001

内向MEP

DeviceD

Ten-GigabitEthernet3/0/1

3002

外向MEP

4

DeviceB

Ten-GigabitEthernet3/0/1

4001

内向MEP

DeviceE

Ten-GigabitEthernet3/0/2

4002

外向MEP

 

1. Device A的配置

# 在Device A的服务实例1和2内分别配置MEP列表。

[DeviceA] cfd meplist 1001 1002 service-instance 1

[DeviceA] cfd meplist 2001 2002 service-instance 2

# 在接口Ten-GigabitEthernet3/0/1上创建服务实例1内的内向MEP 1001。

[DeviceA] interface ten-gigabitethernet 3/0/1

[DeviceA-Ten-GigabitEthernet3/0/1] cfd mep 1001 service-instance 1 inbound

[DeviceA-Ten-GigabitEthernet3/0/1] quit

# 在接口Ten-GigabitEthernet3/0/2上创建服务实例2内的内向MEP 2001。

[DeviceA] interface ten-gigabitethernet 3/0/2

[DeviceA-Ten-GigabitEthernet3/0/2] cfd mep 2001 service-instance 2 inbound

[DeviceA-Ten-GigabitEthernet3/0/2] quit

Device B、Device D和Device E的配置与Device A相似。

2. Device B的配置

[DeviceB] cfd meplist 3001 3002 service-instance 3

[DeviceB] cfd meplist 4001 4002 service-instance 4

[DeviceB] interface ten-gigabitethernet 3/0/1

[DeviceB-Ten-GigabitEthernet3/0/1] cfd mep 3001 service-instance 3 inbound

[DeviceB-Ten-GigabitEthernet3/0/1] cfd mep 4001 service-instance 4 inbound

[DeviceB-Ten-GigabitEthernet3/0/1] quit

3. Device D的配置

[DeviceD] cfd meplist 1001 1002 service-instance 1

[DeviceD] cfd meplist 3001 3002 service-instance 3

[DeviceD] interface ten-gigabitethernet 3/0/2

[DeviceD-Ten-GigabitEthernet3/0/2] cfd mep 1002 service-instance 1 inbound

[DeviceD-Ten-GigabitEthernet3/0/2] quit

[DeviceD] interface ten-gigabitethernet 3/0/1

[DeviceD-Ten-GigabitEthernet3/0/1] cfd mep 3002 service-instance 3 outbound

[DeviceD-Ten-GigabitEthernet3/0/1] quit

4. Device E的配置

[DeviceE] cfd meplist 2001 2002 service-instance 2

[DeviceE] cfd meplist 4001 4002 service-instance 4

[DeviceE] interface ten-gigabitethernet 3/0/1

[DeviceE-Ten-GigabitEthernet3/0/1] cfd mep 2002 service-instance 2 inbound

[DeviceE-Ten-GigabitEthernet3/0/1] quit

[DeviceE] interface ten-gigabitethernet 3/0/2

[DeviceE-Ten-GigabitEthernet3/0/2] cfd mep 4002 service-instance 4 outbound

[DeviceE-Ten-GigabitEthernet3/0/2] quit

3.4.5  配置MIP的创建规则

# 在Device C的服务实例3内配置MIP的创建规则为Default规则。

[DeviceC] cfd mip-rule default service-instance 3

3.4.6  启用MEP的连续性检测功能

1. Device A的配置

# 在接口Ten-GigabitEthernet3/0/1上开启服务实例1内MEP 1001的CCM报文发送功能。

[DeviceA] interface ten-gigabitethernet 3/0/1

[DeviceA-Ten-GigabitEthernet3/0/1] cfd cc service-instance 1 mep 1001 enable

[DeviceA-Ten-GigabitEthernet3/0/1] quit

# 在接口Ten-GigabitEthernet3/0/2上开启服务实例2内MEP 2001的CCM报文发送功能。

[DeviceA] interface ten-gigabitethernet 3/0/2

[DeviceA-Ten-GigabitEthernet3/0/2] cfd cc service-instance 2 mep 2001 enable

[DeviceA-Ten-GigabitEthernet3/0/2] quit

Device B、Device D和Device E的配置与Device A相似。

2. Device B的配置

[DeviceB] interface ten-gigabitethernet 3/0/1

[DeviceB-Ten-GigabitEthernet3/0/1] cfd cc service-instance 3 mep 3001 enable

[DeviceB-Ten-GigabitEthernet3/0/1] cfd cc service-instance 4 mep 4001 enable

[DeviceB-Ten-GigabitEthernet3/0/1] quit

3. Device D的配置

[DeviceD] interface ten-gigabitethernet 3/0/1

[DeviceD-Ten-GigabitEthernet3/0/1] cfd cc service-instance 3 mep 3002 enable

[DeviceD-Ten-GigabitEthernet3/0/1] quit

[DeviceD] interface ten-gigabitethernet 3/0/2

[DeviceD-Ten-GigabitEthernet3/0/2] cfd cc service-instance 1 mep 1002 enable

[DeviceD-Ten-GigabitEthernet3/0/2] quit

4. Device E的配置

[DeviceE] interface ten-gigabitethernet 3/0/1

[DeviceE-Ten-GigabitEthernet3/0/1] cfd cc service-instance 2 mep 2002 enable

[DeviceE-Ten-GigabitEthernet3/0/1] quit

[DeviceE] interface ten-gigabitethernet 3/0/2

[DeviceE-Ten-GigabitEthernet3/0/2] cfd cc service-instance 4 mep 4002 enable

[DeviceE-Ten-GigabitEthernet3/0/2] quit

3.5  验证配置

说明

假定Device A~Device E的MAC地址依次为0010-FC01-6511、0010-FC02-6512、0010-FC03-6513、0010-FC04-6514和0010-FC05-6515。

 

(1)       网络链路正常时

# 在Device A上查看服务实例1内MEP 1001的远端MEP的信息。

[DeviceA] display cfd remote-mep service-instance 1 mep 1001

MEP ID   MAC address      State        Time                  MAC status

1002     0010-fc04-6514   OK           -                     UP

结果显示远端MEP运行状态正常。

# 在Device A上启用环回功能,检查服务实例1内MEP 1001到MEP 1002的链路状况。

[DeviceA] cfd loopback service-instance 1 mep 1001 target-mep 1002

Loopback to 0010-fc04-6514 with the sequence number start from 1001-43404:

Reply from 0010-fc04-6514: sequence number=1001-43404

Reply from 0010-fc04-6514: sequence number=1001-43405

Reply from 0010-fc04-6514: sequence number=1001-43406

Reply from 0010-fc04-6514: sequence number=1001-43407

Reply from 0010-fc04-6514: sequence number=1001-43408

Sent: 5        Received: 5        Lost: 0

结果显示服务实例1内的MEP 1001和MEP 1002间的链路无故障。

(2)       网络链路故障时

# 在Device A上查看服务实例1内MEP 1001的远端MEP的信息。

[DeviceA] display cfd remote-mep service-instance 1 mep 1001

MEP ID   MAC address      State        Time                  MAC status

1002     0010-fc04-6514   FAILED       -                     DOWN

结果显示远端MEP运行状态不正常。

# 在Device A上启用环回功能,检查服务实例1内MEP 1001到MEP 1002的链路状况。

[DeviceA] cfd loopback service-instance 1 mep 1001 target-mep 1002

Loopback to 0010-fc04-6514 with the sequence number start from 1001-43904:

Sent: 5        Received: 0        Lost: 5

结果显示服务实例1内的MEP 1001和MEP 1002间的链路存在故障。

# 先从小区域内排查故障位置,在Device B上开启链路跟踪功能,查找服务实例3内的MEP 3001到MEP 3002的路径。

[DeviceB] cfd linktrace service-instance 3 mep 3001 target-mep 3002

Linktrace to MEP 3002 with the sequence number 3001-43862:

MAC Address               TTL     Last Mac         Relay Action

0010-fc03-6513            63      0010-fc02-6512   MPDB

结果显示服务实例3内的MEP 3001仅收到MIP反馈的LTR报文,而未收到MEP3002(DeviceD的XGE3/0/1)反馈的LTR,从而可以初步判断Device C和Device D之间的链路发生故障。MD_B之外的网络就不用再进行故障检查,减少了故障定位的时间。

3.6  配置文件

·            Device A:

#

 cfd enable

 cfd md MD_A index 1 level 5

 cfd service-instance 1 ma-id string MA_A_1 ma-index 1 md MD_A vlan 20

 cfd meplist 1001 to 1002 service-instance 1

 cfd service-instance 2 ma-id string MA_A_2 ma-index 1 md MD_A vlan 30

 cfd meplist 2001 to 2002 service-instance 2

#

vlan 20

#

vlan 30

#

interface Ten-GigabitEthernet3/0/1

 port link-mode bridge

 port access vlan 20

 cfd mep 1001 service-instance 1 inbound

 cfd cc service-instance 1 mep 1001 enable

#

interface Ten-GigabitEthernet3/0/2

 port link-mode bridge

 port access vlan 30

 cfd mep 2001 service-instance 2 inbound

 cfd cc service-instance 2 mep 2001 enable

#

interface Ten-GigabitEthernet3/0/3

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 20 30

·            Device B:

#

 cfd enable

 cfd md MD_B index 1 level 3

 cfd service-instance 3 ma-id string MA_B_1 ma-index 1 md MD_B vlan 20

 cfd meplist 3001 to 3002 service-instance 3

 cfd service-instance 4 ma-id string MA_B_2 ma-index 2 md MD_B vlan 30

 cfd meplist 4001 to 4002 service-instance 4

#

vlan 20

#

vlan 30

#

interface Ten-GigabitEthernet3/0/1

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 20 30

 cfd mep 3001 service-instance 3 inbound

 cfd cc service-instance 3 mep 3001 enable

 cfd mep 4001 service-instance 4 inbound

 cfd cc service-instance 4 mep 4001 enable

#

interface Ten-GigabitEthernet3/0/2

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 20

#

interface Ten-GigabitEthernet3/0/3

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 30

·            Device C:

#

 cfd enable

 cfd md MD_B index 1 level 3

 cfd service-instance 3 ma-id string MA_B_1 ma-index 1 md MD_B vlan 20

 cfd mip-rule default service-instance 3

#

vlan 20

#

interface Ten-GigabitEthernet3/0/1

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 20

#

interface Ten-GigabitEthernet3/0/2

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 20

·            Device D:

#

 cfd enable

 cfd md MD_A index 1 level 5

 cfd md MD_B index 2 level 3

 cfd service-instance 1 ma-id string MA_A_1 ma-index 1 md MD_A vlan 20

 cfd meplist 1001 to 1002 service-instance 1

 cfd service-instance 3 ma-id string MA_B_1 ma-index 1 md MD_B vlan 20

 cfd meplist 3001 to 3002 service-instance 3

#

vlan 20

#

interface Ten-GigabitEthernet3/0/1

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 20

 cfd mep 3002 service-instance 3 outbound

 cfd cc service-instance 3 mep 3002 enable

#

interface Ten-GigabitEthernet3/0/2

 port link-mode bridge

 port access vlan 20

 cfd mep 1002 service-instance 1 inbound

 cfd cc service-instance 1 mep 1002 enable

·            Device E:

#

 cfd enable

 cfd md MD_A index 1 level 5

 cfd md MD_B index 2 level 3

 cfd service-instance 2 ma-id string MA_A_2 ma-index 1 md MD_A vlan 30

 cfd meplist 2001 to 2002 service-instance 2

 cfd service-instance 4 ma-id string MA_B_2 ma-index 2 md MD_B vlan 30

 cfd meplist 4001 to 4002 service-instance 4

#

vlan 30

#

interface Ten-GigabitEthernet3/0/1

 port link-mode bridge

 port access vlan 30

 cfd mep 2002 service-instance 2 inbound

 cfd cc service-instance 2 mep 2002 enable

#

interface Ten-GigabitEthernet3/0/2

 port link-mode bridge

 port link-type trunk

 port trunk permit vlan 30

 cfd mep 4002 service-instance 4 outbound

 cfd cc service-instance 4 mep 4002 enable

4  相关资料

·            H3C S10500系列交换机 可靠性配置指导-R758X

·            H3C S10500系列交换机 可靠性命令参考-R758X

不同款型规格的资料略有差异, 详细信息请向具体销售和400咨询。H3C保留在没有任何通知或提示的情况下对资料内容进行修改的权利!

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