关于H3C SR8800-X/SR8800-X-S/CR16000-F/SR8800-F系列路由器路由震荡引起BGP路由转发不通问题公告

关于H3C SR8800-X/SR8800-X-S/CR16000-F/SR8800-F系列路由器路由震荡引起BGP路由转发不通问题公告

【产品型号】

H3C SR8800-X/SR8800-X-S/SR8800-F/CR16000-F 系列路由器

【涉及版本】

 H3C SR8800-CMW710-R7143/CR16000-CMW710-R7143之前所有的版本

【问题描述】

在BGP组网或者MPLS VPN组网中，当IGP路由出现震荡时，有较高的概率触发该业务转发不通。

【原因分析】

问题产生条件：

BGP或者MPLS VPN组网中，如果设备上的IGP路由发生震荡时，会有一定的概率触发转发表项错误，造成BGP路由或者MPLS业务转发不通，该问题在IGP震荡时有较高的概率触发。

问题现象

BGP路由或者MPLS业务转发不通。具体判断方式如下：

1.   由于是驱动的VN资源泄露导致，在资源完全泄漏的情况下，可以通过下面的命令行查看。2.   对于部分资源泄露的情况下，可以在下游设备抓包，如果发现封装的报文的源MAC或者目的MAC是00-00-00-00-00-00时可以确认是该问题。

确认VN资源完全泄露的命令如下：

[88-X-probe]debug mpls-drv display rbtree statistics slot 2                    

   RbtreeInfo                                                                  

============================================================================== 

 PwTree                                                                        

NodeNumber  = 0                                                                 

NoOfMemBlocks = 1                                                              

MemBlockSize = 256                                                             

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

 AcTree                                                                        

NodeNumber  = 0                                                                

NoOfMemBlocks = 1                                                              

MemBlockSize = 256                                                             

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

 PortTree                                                                       

NodeNumber  = 0                                                                

NoOfMemBlocks = 1                                                              

MemBlockSize = 256                                                              

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

 StationTree                                                                   

NodeNumber  = 0                                                                 

NoOfMemBlocks = 1                                                              

MemBlockSize = 1024                                                            

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

 VnEgrTree

NodeNumber  = 65536                   // 65536表示资源完全泄露

NoOfMemBlocks = 256

MemBlockSize = 256

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

 TnlTree                                                                       

NodeNumber  = 0                                                                

NoOfMemBlocks = 1                                                              

MemBlockSize = 256                                                              

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

 EgrTree                                                                       

NodeNumber  = 0                                                                 

NoOfMemBlocks = 1                                                              

MemBlockSize = 256                                                             

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

 VnEgrTree                                                                     

NodeNumber  = 0                                                                

NoOfMemBlocks = 1                                                              

MemBlockSize = 256                                                             

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

MPLS Station Cnt                                                                

MPLS Cnt  = 0                                                                  

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

 InfoTree                                                                       

NodeNumber  = 0                                                                

NoOfMemBlocks = 1                                                              

MemBlockSize = 256                                                              

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

[88-X-probe]                                                                 

【规避措施／解决方案】

升级H3C SR8800-CMW710-R7143/CR16000-CMW710-R7143及之后版本解决。

【参考资料】

无。

如有问题，请联系杭州华三通信技术有限公司服务热线：4008100504。