目录

简介

先决条件

要求

使用的组件

场景

拓扑

配置

边缘设备配置

vSmart OMP配置

vSmart策略

问题

解决方案

相关信息

简介

本文档介绍如何对重叠管理协议(OMP)路由进行故障排除并解释vSmart路由选择操作顺序。

先决条件

要求

思科建议您了解思科软件定义广域网(SDWAN)解决方案。

使用的组件

本文档不限于硬件平台。  本文描述的是使用20.6.3上的vSmart和17.6.3上的cEdge路由器的实验室中出现的问题，但在其他软件版本上也出现了该问题。

本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始（默认）配置。如果您的网络处于活动状态，请确保您了解所有命令的潜在影响。

场景

本文档中描述的场景显示两个站点向vSmart通告默认路由。vSmart会选择最佳路径，并将其通告给边缘设备。在这种情况下，选择AMER_DC是因为控制策略会阻止远程边缘（云边缘）的EMEAR_DC默认路由。vSmart仅在具有AMER_DC边缘的商业互联网上拥有控制连接。  当AMER_DC商务Internet发生中断时，所有控制连接都将丢失，vSmart会将从AMER_DC获知的所有路由置于“过时”状态。  这会导致vSmart不将这些视为最佳路径。

此时，vSmart通常会选择EMEA_DC作为最佳路径并通告它。  但是，控制策略会阻止来自EMEA_DC的默认路由，并且这会应用到云边缘。  如果没有send-backup-paths的OMP配置，vSmart不会发送陈旧路由，这些路由是控制策略不拒绝的唯一默认路由。  还需要在vSmart OMP配置中增加send-path-limit，以便发送超过非陈旧路由的数量。

拓扑

为了更好地理解问题，下面是一个描述设置的简单拓扑图：

配置

边缘设备配置

配置摘要：

- 站点EMEA_DC路由器具有传输定位器(TLOC)颜色biz-internet、private1和private2。

- 已在private2 TLOC上配置了max-control-connections 0。

- 站点AMER_DC路由器具有TLOC颜色biz-internet、private1和private2。

- 已在private1和private2 TLOC上配置了Max-control-connections 0命令。

- 云路由器具有TLOC颜色biz-internet、private1和private2。

- 已在private2 TLOC上配置了max-control-connections 0。

- 所有路由器都有默认的OMP配置。

- 所有EMEA_DC和AMER_DC路由器都会通告默认路由。

- 有两个设备（172.16.4.1和172.16.5.1）属于重叠网络，但是与此问题无关。  因此，拓扑或表中未提及它们。

主机名

站点ID

system-ip

EMEA_DC1

2016

10.4.4.1

EMEA_DC2

2016

10.4.4.6

AMER_DC1

2034

10.5.5.3

AMER_DC2

2034

10.5.5.4

云

202

10.10.20.2

vSmart

10

10.3.3.1

vSmart OMP配置

vSmart使用默认OMP配置进行配置。

vsmart1# show running-config omp

omp

no shutdown

graceful-restart

!

vsmart1# show running-config omp | details

omp

no shutdown

send-path-limit   4

no send-backup-paths

no discard-rejected

graceful-restart

timers

holdtime               60

advertisement-interval 1

graceful-restart-timer 43200

eor-timer              300

exit

!

提示：要查看完整配置（默认和非默认），请包括 | show running-config命令末尾的详细信息信息。

vSmart策略

vSmart配置了集中控制策略。  该控制策略应用于云站点，并为来自EMEA_DC站点的默认路由配置操作拒绝。

以下是策略配置：

policy

control-policy Rej_Remote_Default

sequence 1

match route

site-list EMEA_DC

prefix-list default_route

!

action reject

!

!

default-action accept

!

lists

prefix-list default_route

ip-prefix 0.0.0.0/0

!

site-list Cloud

site-id 202

!

site-list EMEA_DC

site-id 2016

!

!

!

apply-policy

site-list Cloud

control-policy Rej_Remote_Default out

!

!

问题

在正常操作条件下，云站点会收到来自AMER_DC站点的默认路由。  这可以通过命令show sdwan omp routes vpn 1 0.0.0.0/0进行验证。如果您的服务vpn不是vpn 1，请将编号1替换为服务vpn编号。

Cloud#show sdwan omp routes vpn 1 0.0.0.0/0

Generating output, this might take time, please wait ...

Code:

C   -> chosen

I   -> installed

Red -> redistributed

Rej -> rejected

L   -> looped

R   -> resolved

S   -> stale

Ext -> extranet

Inv -> invalid

Stg -> staged

IA  -> On-demand inactive

U   -> TLOC unresolved

PATH                      PSEUDO

FROM PEER        ID     LABEL    STATUS    KEY     TLOC IP          COLOR            ENCAP  PREFERENCE

--------------------------------------------------------------------------------------------------------

10.3.3.1         81     1003     C,I,R     1       10.5.5.3         biz-internet     ipsec  -

10.3.3.1         97     1003     C,I,R     1       10.5.5.3         private1         ipsec  -

10.3.3.1         98     1003     C,I,R     1       10.5.5.3         private2         ipsec  -

10.3.3.1         99     1003     C,I,R     1       10.5.5.4         biz-internet     ipsec  -

vSmart在所有4个DC路由器的3个TLOC上接收默认路由。vSmart共有12个路由。

vsmart1# show omp routes vpn 1 0.0.0.0/0 received | tab

Code:

C   -> chosen

I   -> installed

Red -> redistributed

Rej -> rejected

L   -> looped

R   -> resolved

S   -> stale

Ext -> extranet

Inv -> invalid

Stg -> staged

IA  -> On-demand inactive

U   -> TLOC unresolved

PATH                      ATTRIBUTE

FROM PEER        ID     LABEL    STATUS    TYPE       TLOC IP          COLOR            ENCAP  PREFERENCE

-----------------------------------------------------------------------------------------------------------

10.4.4.1         68     1002     C,R       installed  10.4.4.1         biz-internet     ipsec  -

10.4.4.1         81     1002     C,R       installed  10.4.4.1         private1         ipsec  -

10.4.4.1         82     1002     C,R       installed  10.4.4.1         private2         ipsec  -

10.4.4.6         68     1003     C,R       installed  10.4.4.6         biz-internet     ipsec  -

10.4.4.6         81     1003     C,R       installed  10.4.4.6         private1         ipsec  -

10.4.4.6         82     1003     C,R       installed  10.4.4.6         private2         ipsec  -

10.5.5.3         68     1003     C,R       installed  10.5.5.3         biz-internet     ipsec  -

10.5.5.3         81     1003     C,R       installed  10.5.5.3         private1         ipsec  -

10.5.5.3         82     1003     C,R       installed  10.5.5.3         private2         ipsec  -

10.5.5.4         68     1003     C,R       installed  10.5.5.4         biz-internet     ipsec  -

10.5.5.4         81     1003     C,R       installed  10.5.5.4         private1         ipsec  -

10.5.5.4         82     1003     C,R       installed  10.5.5.4         private2         ipsec  -

如果biz-internet电路在AMER_DC站点上发生中断，云边缘设备将不再接收默认路由。  您预计它会丢失biz-internet路由，但会保留private1和private2路由。  您可以使用show sdwan omp routes vpn 1 0.0.0.0/0 和show sdwan omp routes vpn 1命令验证这一点。

注：如果设备未接收前缀，则show sdwan omp routes命令会显示CLI命令错误，如下所示。

Cloud#show sdwan omp routes vpn 1 0.0.0.0/0

Generating output, this might take time, please wait ...

show omp best-match-route family ipv4 entries vpn 1 0.0.0.0    | tab

show omp best-match-route family ipv4 entries vpn

syntax error: unknown argument

Error executing command: CLI command error -

Cloud#show sdwan omp routes

Generating output, this might take time, please wait ...

Code:

C   -> chosen

I   -> installed

Red -> redistributed

Rej -> rejected

L   -> looped

R   -> resolved

S   -> stale

Ext -> extranet

Inv -> invalid

Stg -> staged

IA  -> On-demand inactive

U   -> TLOC unresolved

PATH                      ATTRIBUTE

VPN    PREFIX              FROM PEER        ID     LABEL    STATUS    TYPE       TLOC IP          COLOR            ENCAP  PREFERENCE

--------------------------------------------------------------------------------------------------------------------------------------

1      10.5.100.0/24       10.3.3.1         72     1003     Inv,U     installed  10.5.5.3         biz-internet     ipsec  -

10.3.3.1         73     1003     C,I,R     installed  10.5.5.3         private1         ipsec  -

10.3.3.1         74     1003     C,I,R     installed  10.5.5.3         private2         ipsec  -

vSmart通过AMER_DC边缘设备进入平稳重启状态，您可以通过show omp peers命令查看该状态。

vsmart1# show omp peers

R -> routes received

I -> routes installed

S -> routes sent

DOMAIN    OVERLAY   SITE

PEER             TYPE    ID        ID        ID        STATE    UPTIME           R/I/S

------------------------------------------------------------------------------------------

172.16.4.1       vedge   1         1         101       up       0:13:13:02       9/0/22

172.16.5.1       vedge   1         1         104       up       0:13:13:03       3/0/28

10.4.4.1         vedge   1         1         2016      up       0:01:45:10       6/0/27

10.4.4.6         vedge   1         1         2016      up       0:02:13:27       6/0/27

10.5.5.3 vedge 1 1 2034 down-in-gr 6/0/0 10.5.5.4 vedge 1 1 2034 down-in-gr 6/0/0

10.10.20.2       vedge   1         1         202       up       0:12:40:09       3/0/24

vSmart继续接收所有12条路由，每台DC设备3条。这可以通过收到的show omp routes vpn 1 0.0.0.0/0进行验证 | 选项卡。  来自AMER_DC站点的路由显示为陈旧状态。

提示：为了以用户友好的表格格式查看输出，请包括 | 选项卡。  如果没有它，命令的输出将采用不同的格式。

vsmart1# show omp routes vpn 1 0.0.0.0/0 received | tab

Code:

C -> chosen

I   -> installed

Red -> redistributed

Rej -> rejected

L   -> looped

R -> resolved

S -> stale

Ext -> extranet

Inv -> invalid

Stg -> staged

IA  -> On-demand inactive

U   -> TLOC unresolved

PATH                      ATTRIBUTE

FROM PEER        ID     LABEL    STATUS    TYPE       TLOC IP          COLOR            ENCAP  PREFERENCE

-----------------------------------------------------------------------------------------------------------

10.4.4.1         68     1002     C,R       installed  10.4.4.1         biz-internet     ipsec  -

10.4.4.1         81     1002     C,R       installed  10.4.4.1         private1         ipsec  -

10.4.4.1         82     1002     C,R       installed  10.4.4.1         private2         ipsec  -

10.4.4.6         68     1003     C,R       installed  10.4.4.6         biz-internet     ipsec  -

10.4.4.6         81     1003     C,R       installed  10.4.4.6         private1         ipsec  -

10.4.4.6         82     1003     C,R       installed  10.4.4.6         private2         ipsec  -

10.5.5.3         68     1003     R,S       installed  10.5.5.3         biz-internet     ipsec  -

10.5.5.3         81     1003     R,S       installed  10.5.5.3         private1         ipsec  -

10.5.5.3         82     1003     R,S       installed  10.5.5.3         private2         ipsec  -

10.5.5.4         68     1003     R,S       installed  10.5.5.4         biz-internet     ipsec  -

10.5.5.4         81     1003     R,S       installed  10.5.5.4         private1         ipsec  -

10.5.5.4         82     1003     R,S       installed  10.5.5.4         private2         ipsec  -

为了验证vSmart发送到边缘设备的路由，您可以运行命令 show omp routes vpn 1 0.0.0.0/0 advertised detail | tab.

从输出中需要注意的一些事项：

1. 只有来自EMEA_DC边缘路由器的默认路由会发送到其他边缘设备。

2. 不会向云边缘路由器通告任何默认路由。

vsmart1# show omp routes vpn 1 0.0.0.0/0 advertised detail | tab

Code:

C   -> chosen

I   -> installed

Red -> redistributed

Rej -> rejected

L   -> looped

R   -> resolved

S   -> stale

Ext -> extranet

Inv -> invalid

Stg -> staged

IA  -> On-demand inactive

U   -> TLOC unresolved

ULTIMATE

PATH                                                                                                                                      UNKNOWN                                                                    TLOC

TO PEER          ADVERTISE ID     ID    LABEL    TLOC IP          COLOR            ENCAP  PROTOCOL         METRIC           DOMAIN ID   SITE ID     PREFERENCE  TAG         ATTRIBUTE LEN    ORIGINATOR       TLOC IP          COLOR            ENCAP  ACTION   OVERLAY ID  AS PATH     COMMUNITY

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

172.16.4.1       67               50    1003     10.4.4.6         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

78               56    1002     10.4.4.1         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

79               57    1002     10.4.4.1         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

81               61    1002     10.4.4.1         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

172.16.5.1       67               56    1003     10.4.4.6         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

78               62    1002     10.4.4.1         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

79               63    1002     10.4.4.1         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

81               67    1002     10.4.4.1         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

10.4.4.1         67               53    1003     10.4.4.6         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

68               54    1003     10.4.4.6         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

69               55    1003     10.4.4.6         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

10.4.4.6         78               97    1002     10.4.4.1         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

79               98    1002     10.4.4.1         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

81               102   1002     10.4.4.1         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

解决方案

这是给定此环境中当前配置的预期行为。  发生这种情况的原因是vSmart上OMP路由选择的操作顺序。

1. vSmart会选择要发送到设备的最佳路由。  默认情况下，vSmart的send-path-limit为4，因此会选择4条最佳路由。当其他路由可用时，不会选择过时的路由。对于云边缘路由，将选择来自EMEA_DC的默认路由作为最佳路由。

2. 应用出站策略，拒绝来自EMEA_DC路由的路由。  因此，不会将默认路由发送到云边缘路由器。

要更正此问题，需要修改vSmart OMP配置以发送超过4个路由和超过最佳路由。

- omp send-backup-paths配置仅适用于vSmarts，并且OMP会向边缘路由器通告备份路由。 默认情况下，OMP仅通告一个或多个最佳路由。如果配置send-backup-paths命令，OMP除了通告最佳路由外，还会通告第一个非最佳路由。

- omp send-path-limit配置确定边缘路由器通告给vSmart或vSmart通告给边缘路由器的等价路由的最大数量。  默认值为 4。对于大多数SDWAN网络，范围为1至16。如果vSmart在20.8.x或更高版本的分层SD-WAN架构中，则范围为1至32。对于此使用案例，该值需要大于vSmart从EMEA_DC站点拥有的非陈旧路由的数量，即6。

vsmart1# show running-config omp

omp

no shutdown

send-path-limit 16

send-backup-paths

graceful-restart

!

为了验证vSmart OMP配置更改是否产生了预期的效果，您可以运行该命令 show omp routes vpn 1 0.0.0.0/0 advertised detail | tab.

从输出中需要注意的一些事项：

1. EMEA_DC和AMER_DC默认路由器都会通告给网络中的某些边缘路由器。部分路由器在所有12个默认路由上通告。

2. 来自AMER_DC站点的默认路由会通告到云边缘路由器。

vsmart1# show omp routes vpn 1 0.0.0.0/0 advertised detail | tab

Code:

C   -> chosen

I   -> installed

Red -> redistributed

Rej -> rejected

L   -> looped

R   -> resolved

S   -> stale

Ext -> extranet

Inv -> invalid

Stg -> staged

IA  -> On-demand inactive

U   -> TLOC unresolved

ULTIMATE

PATH                                                                                                                                      UNKNOWN                                                                    TLOC

TO PEER          ADVERTISE ID     ID    LABEL    TLOC IP          COLOR            ENCAP  PROTOCOL         METRIC           DOMAIN ID   SITE ID     PREFERENCE  TAG         ATTRIBUTE LEN    ORIGINATOR       TLOC IP          COLOR            ENCAP  ACTION   OVERLAY ID  AS PATH     COMMUNITY

----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

172.16.4.1       22               64    1003     10.5.5.3         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

23               65    1003     10.5.5.3         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

24               66    1003     10.5.5.3         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

28               67    1003     10.5.5.4         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

29               68    1003     10.5.5.4         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

30               69    1003     10.5.5.4         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

67               50    1003     10.4.4.6         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

68               62    1003     10.4.4.6         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

69               63    1003     10.4.4.6         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

78               56    1002     10.4.4.1         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

79               57    1002     10.4.4.1         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

81               61    1002     10.4.4.1         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

172.16.5.1       22               70    1003     10.5.5.3         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

23               71    1003     10.5.5.3         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

24               72    1003     10.5.5.3         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

28               73    1003     10.5.5.4         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

29               74    1003     10.5.5.4         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

30               75    1003     10.5.5.4         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

67               56    1003     10.4.4.6         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

68               68    1003     10.4.4.6         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

69               69    1003     10.4.4.6         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

78               62    1002     10.4.4.1         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

79               63    1002     10.4.4.1         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

81               67    1002     10.4.4.1         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

10.4.4.1         22               57    1003     10.5.5.3         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

23               58    1003     10.5.5.3         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

24               59    1003     10.5.5.3         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

28               60    1003     10.5.5.4         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

29               61    1003     10.5.5.4         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

30               62    1003     10.5.5.4         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

67               53    1003     10.4.4.6         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

68               54    1003     10.4.4.6         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

69               55    1003     10.4.4.6         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.6         -                -                -      -        1           -           -

10.4.4.6         22               103   1003     10.5.5.3         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

23               104   1003     10.5.5.3         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

24               105   1003     10.5.5.3         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.3         -                -                -      -        1           -           -

28               106   1003     10.5.5.4         biz-internet     ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

29               107   1003     10.5.5.4         private1         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

30               108   1003     10.5.5.4         private2         ipsec  static           0                -           2034        -           -           -                10.5.5.4         -                -                -      -        1           -           -

78               97    1002     10.4.4.1         biz-internet     ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

79               98    1002     10.4.4.1         private2         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

81               102   1002     10.4.4.1         private1         ipsec  static           0                -           2016        -           -           -                10.4.4.1         -                -                -      -        1           -           -

10.10.20.2 22 112 1003 10.5.5.3 biz-internet ipsec static 0 - 2034 - - - 10.5.5.3 - - - - 1 - - 23 113 1003 10.5.5.3 private1 ipsec static 0 - 2034 - - - 10.5.5.3 - - - - 1 - - 24 114 1003 10.5.5.3 private2 ipsec static 0 - 2034 - - - 10.5.5.3 - - - - 1 - - 28 115 1003 10.5.5.4 biz-internet ipsec static 0 - 2034 - - - 10.5.5.4 - - - - 1 - - 29 116 1003 10.5.5.4 private1 ipsec static 0 - 2034 - - - 10.5.5.4 - - - - 1 - - 30 117 1003 10.5.5.4 private2 ipsec static 0 - 2034 - - - 10.5.5.4 - - - - 1 - -

云边缘路由器从AMER_DC站点接收默认路由。  这可以通过show sdwan omp routes vpn 1 0.0.0.0/0命令进行验证。biz-internet路由处于Inv， U状态，因为电路在AMER_DC站点上发生故障。

Cloud#show sdwan omp routes vpn 1 0.0.0.0/0

Generating output, this might take time, please wait ...

Code:

C   -> chosen

I   -> installed

Red -> redistributed

Rej -> rejected

L   -> looped

R   -> resolved

S   -> stale

Ext -> extranet

Inv -> invalid

Stg -> staged

IA  -> On-demand inactive

U   -> TLOC unresolved

PATH                      PSEUDO

FROM PEER        ID     LABEL    STATUS    KEY     TLOC IP          COLOR            ENCAP  PREFERENCE

--------------------------------------------------------------------------------------------------------

10.3.3.1         112    1003     Inv,U     1       10.5.5.3         biz-internet     ipsec  -

10.3.3.1         113    1003     C,I,R     1       10.5.5.3         private1         ipsec  -

10.3.3.1         114    1003     C,I,R     1       10.5.5.3         private2         ipsec  -

10.3.3.1         115    1003     Inv,U     1       10.5.5.4         biz-internet     ipsec  -

10.3.3.1         116    1003     C,I,R     1       10.5.5.4         private1         ipsec  -

10.3.3.1         117    1003     C,I,R     1       10.5.5.4         private2         ipsec  -

路由表中只安装了private1和private2，因为它们处于C、I、R状态。  根据show ip route vrf 1 0.0.0.0命令的输出将路由安装到表中。

注：在show sdwan omp命令中，vpn关键字用于查看服务端路由器。  在show ip route命令中，vrf关键字用于查看服务端路由器。

Cloud# show ip route vrf 1 0.0.0.0

Routing Table: 1

Routing entry for 0.0.0.0/0, supernet

Known via "omp", distance 251, metric 0, candidate default path, type omp

Last update from 10.5.5.4 on Sdwan-system-intf, 00:17:07 ago

Routing Descriptor Blocks:

10.5.5.4 (default), from 10.5.5.4, 00:17:07 ago, via Sdwan-system-intf

Route metric is 0, traffic share count is 1

* 10.5.5.3 (default), from 10.5.5.3, 00:17:07 ago, via Sdwan-system-intf

Route metric is 0, traffic share count is 1

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