Description

Customer is seeing the following recurring logs. 

Dec 12 00:40:21  P6-RE0 evo-aftmand[21112]: [Notice] Em:  FRR: Reroute-start due to Selector change selector token:1444 active node token:1442
Dec 12 00:40:21  P6-RE0 evo-aftmand[21112]: [Notice] Em:  FRR: Reroute-done Selector token:1444

Dec 12 00:40:40  P6-RE0 evo-aftmand[21112]: [Notice] Em:  FRR: Reroute-start due to Selector change selector token:1444 active node token:1442
Dec 12 00:40:40  P6-RE0 evo-aftmand[21112]: [Notice] Em:  FRR: Reroute-done Selector token:1444

Symptoms


These messages are normal during interface flaps and are informational. 

    root@P6-RE0> show lacp interfaces 
    Dec 12 01:28:46
    Aggregated interface: ae26
        LACP state:       Role   Exp   Def  Dist  Col  Syn  Aggr  Timeout  Activity
          et-1/0/1       Actor    No    No   Yes  Yes  Yes   Yes     Fast    Active
          et-1/0/1     Partner    No    No   Yes  Yes  Yes   Yes     Fast    Active
          et-1/0/2       Actor    No    No   Yes  Yes  Yes   Yes     Fast    Active
          et-1/0/2     Partner    No    No   Yes  Yes  Yes   Yes     Fast    Active
        LACP protocol:        Receive State  Transmit State          Mux State 
          et-1/0/1                  Current   Fast periodic Collecting distributing
          et-1/0/2                  Current   Fast periodic Collecting distributing


    root@P6-RE0:pfe> show interfaces ae26 
     Name: ae26          Index: 1008   IflCount: 1      Type: 29         Weight: 0    
     ...
     Aggregate member list
     IfdIndex     Name                  Weight    State   ActiveToken
     1012         et-1/0/1              1         Up      1442
     1013         et-1/0/2              1         Up      1443


    root@P6-RE0:pfe> show selector 2    
    Sel-Id:2  Token:1444 Refcnt:2 Mode:0x2 Mask:0x4
    Type:Regular SubType:Unknown AggType:Unicast
    IfActiveToken       Weight              Balance             Session
    1442                1                   0                   -
    1443                1                   0                   -

    root@P6-RE0:pfe> show sandbox token 1444 
     AftNode details:
     AftSelector token:1444 group:0 tag:ifd(fast reroute) selector-id:2
     nodeMask:Default Selector-type:Regular,  Selector-subtype:Unknown,  Selector-Aggtype:Unicast, nodes: {1442,1443,}, weights: {1,1,}, balances: {}
     
     JexprHandle details: Handle Type : JexprHandleSelector, pfeMask: 0x20000, progMode: global
     ...




 

Solution


The log messages are PFE FRR related. These messages are normal during interface flaps and are informational. These logs can be safely ignored and there is no functionality impact.

Modification History

2023-11-30 : Article Created