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某局点RBM结合VRRP组网下新增配置导致RBM状态切换典型分析

VRRP
其他

2022-03-30 发表

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孔凡安

孔凡安九段

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组网及说明

RBM结合VRRP的典型组网

关键配置:

主:

remote-backup group

data-channel interface Route-Aggregation64

configuration sync-check interval 12

delay-time 1

adjust-cost ospf enable absolute 1000

track 1

local-ip 1.1.1.1

remote-ip 1.1.1.2

device-role primary

interface Route-Aggregation1.520

description NPMSC

ip address 132.177.67.97 255.255.255.240

vrrp vrid 23 virtual-ip 132.177.67.99 active

vrrp vrid 23 priority 120

vrrp vrid 23 preempt-mode delay 20

vlan-type dot1q vid 520

备:

remote-backup group

data-channel interface Route-Aggregation64

configuration sync-check interval 12

delay-time 1

adjust-cost ospf enable absolute 1000

track 1

local-ip 1.1.1.2

remote-ip 1.1.1.1

device-role secondary

interface Route-Aggregation1.520

description NPMSC

ip address 132.177.67.98 255.255.255.240

vrrp vrid 23 virtual-ip 132.177.67.99 standby

vlan-type dot1q vid 520

问题描述

现场新增子接口的VRRP相关配置,发现配置过程中RBM状态不断发生切换，VRRP也有翻转．

过程分析

查看日志,发现现场的操作顺序如下:

RBM主设备上创建子接口后，先配置的IP以及VRRP等信息。

此时VRRP状态显示为Master符合预期。

%Mar 18 00:27:25:892 2022 TJLT-HLD-JiFeiFW-F5000A-1 VRRP4/6/VRRP_STATUS_CHANGE:

The status of IPv4 virtual router 120 (configured on Route-Aggregation1.120) changed from Initialize to Master: Interface event received.

%Mar 18 00:27:25:884 2022 TJLT-HLD-JiFeiFW-F5000A-1 SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=172.16.255.2-User=admin; Command is vrrp vrid 120 virtual-ip 132.177.64.49 active

%Mar 18 00:27:25:868 2022 TJLT-HLD-JiFeiFW-F5000A-1 SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=172.16.255.2-User=admin; Command is ip address 132.177.64.50 255.255.255.248

%Mar 18 00:27:25:683 2022 TJLT-HLD-JiFeiFW-F5000A-1 SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=172.16.255.2-User=admin; Command is description to_CG46-1

%Mar 18 00:27:25:667 2022 TJLT-HLD-JiFeiFW-F5000A-1 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Route-Aggregation1.120 changed to up.

%Mar 18 00:27:25:667 2022 TJLT-HLD-JiFeiFW-F5000A-1 IFNET/3/PHY_UPDOWN: Physical state on the interface Route-Aggregation1.120 changed to up.

%Mar 18 00:27:25:639 2022 TJLT-HLD-JiFeiFW-F5000A-1 SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=172.16.255.2-User=admin; Command is interface Route-Aggregation1.120

然后配置了子接口的vlan终结功能，此操作会导致接口down一下。

%Mar 18 00:27:26:435 2022 TJLT-HLD-JiFeiFW-F5000A-1 IFNET/5/LINK_UPDOWN: Line protocol state on the interface Route-Aggregation1.120 changed to down.

%Mar 18 00:27:26:435 2022 TJLT-HLD-JiFeiFW-F5000A-1 VRRP4/6/VRRP_STATUS_CHANGE:

The status of IPv4 virtual router 120 (configured on Route-Aggregation1.120) changed from Master to Initialize: Interface event received.

%Mar 18 00:27:26:433 2022 TJLT-HLD-JiFeiFW-F5000A-1 IFNET/3/PHY_UPDOWN: Physical state on the interface Route-Aggregation1.120 changed to down.

%Mar 18 00:27:26:419 2022 TJLT-HLD-JiFeiFW-F5000A-1 SHELL/6/SHELL_CMD: -Line=vty0-IPAddr=172.16.255.2-User=admin; Command is vlan-type dot1q vid 120

接口down---vrrp状态发生切换（Initialize）---RBM切换为Standby状态（VRRP由RBM接管，会导致所有的vrrp均变为Backup状态）

The status of IPv4 virtual router 120 (configured on Route-Aggregation1.120) changed from Master to Backup: Controled by RBM.

%Mar 18 00:27:26:439 2022 TJLT-HLD-JiFeiFW-F5000A-1 OSPF/6/RBM_ADJUST_COST: RBM notified cost adjust to 1000.