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混合overlay场景服务器单挂流量泛洪问题

8小时前 发表

组网及说明

告警信息

Ten-GigabitEthernet1/0/5

Current state: UP

Line protocol state: UP

         145262439620 unicasts, 3962 broadcasts, 27496408 multicasts, 1934231 pauses -----11:09

Input (normal):  145289939990 packets, - bytes

         145262439620 unicasts, 3962 broadcasts, 27496408 multicasts, 1934231 pauses

 

Ten-GigabitEthernet1/0/5

Current state: UP

Line protocol state: UP

       145327855449 unicasts, 3962 broadcasts, 27504048 multicasts, 1934499 pauses ----16:20

Input (normal):  145355363459 packets, - bytes

       145327855449 unicasts, 3962 broadcasts, 27504048 multicasts, 1934499 pauses

 

Ten-GigabitEthernet1/0/20

Current state: UP

Line protocol state: UP

       468675194202 unicasts, 760 broadcasts, 86605286 multicasts, 1897748 pauses -----11:09

Input (normal):  468761800248 packets, - bytes

       468675194202 unicasts, 760 broadcasts, 86605286 multicasts, 1897748 pauses

 

 

Ten-GigabitEthernet1/0/20

Current state: UP

Line protocol state: UP

       468721402955 unicasts, 760 broadcasts, 86606571 multicasts, 1898004 pauses   ----16:20

Input (normal):  468808010286 packets, - bytes

       468721402955 unicasts, 760 broadcasts, 86606571 multicasts, 1898004 pauses

问题描述

业务接入SW-3和业务接入SW-4手工创建vxlan,业务接入SW-3下连服务器双归接入,业务接入SW-4下连服务器单挂

 

业务接入SW-3下连服务器访问业务接入SW-4下连服务器出现流量泛洪现象

过程分析

现场手工配置的vxlan+mlag, 服务器单挂接入mlag,当前版本未支持mlag vxlan场景的mlag设备间l2vpn mac同步,当未学习到服务器macmlag设备收到业务流量,会在vsi内泛洪,导致服务器侧收到大量报文,引起服务器侧拥塞丢包。

解决方法

使用evpn+mlag