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FAQ-How to Solve NE40 FIB MISS

Publication Date:  2012-07-27 Views:  36 Downloads:  0
Issue Description
Q:
NE40 upgrades to Version 3.10, RELEASE 2321. NE40 acts as convergence device and has much SUB VLAN, and results in FIB MISS. Some net bar users cannot access network. NE40 gateway can be pinged from users, but interconnected interface of NE40 and NE80 cannot be pinged.
uesr--lanswitch--NE40--NE80
Alarm Information
Null
Handling Process
A:
There is much SubVLAN in the configuration. After the upgrade, it triggers much Miss. SRU and LPU have much information and entry information is lost.
There is command that can solve the problem. Configure the command and refresh it. (Later versions of 2321 support the command.)
#
 fib refresh  10 (refresh interval) 100 (refresh number /times)

Address record for users not accessing network:
[xx_WH_NE40A-diag]                                                              
 IP address              = 2xx.2xx.78.1xx                                       
 IP prefixLength         = 26                                                   
 VRF index               = 0                                                    
 Signature               = 0                                                    
 ecmpThr1                = 100                                                  
 ecmpThr2                = 0                                                    
          nextHop[0] actionFlags = 0x00000268 :                                 
          nextHop[0] is VLAN_ROUTE                                              
          nextHop[0] is REDIRECTION_CP_DEF                                      
          nextHop[0] is DIRECTLY_ATT_SUBNET                                     
          nextHop[0] is VLAN_REDIRECT                                           
                                                                                
Online record:
[FS_WH_NE40A-diag]                                                              
 IP address              = 241.303.33.162                                    
 IP prefixLength         = 32                                                   
 VRF index               = 0                                                    
 Signature               = 0                                                    
 ecmpThr1                = 100                                                  
 ecmpThr2                = 0                                                    
          nextHop[0] ipaddr = 241.303.33.162                                    
          tegressContext = 3824                                                 
          tb = 3 tp = 0x17 subIndex = 0                                         
          nextHop[0] actionFlags = 0x00000048 :                                 
          nextHop[0] is VLAN_ROUTE                                              
          nextHop[0] is DIRECTLY_ATT_SUBNET
Root Cause
Null
Suggestions
Null

END