Wired Intelligent Edge (Campus Switching and Routing)

Unable to enable BFD on 54xx chassis with all v3 modules - error : BFD is not supported on V1 or V2

MVP
MVP
Problem:

 

When enabling BFD on a 5406Rzl2 chassis an error is thrown that "BFD is not supported on V1 or V2"  even though all the interface modules in the switch are v3



Diagnostics:

 

  • Check if any v1 or v2 interface modules are connected

 

HP-Switch-5406Rzl2# show modules

 Status and Counters - Module Information

  Chassis: 5406Rzl2 J9850A         Serial Number:   SG69GPR1QY

  Allow V2 Modules:   Yes

                                                                       Core  Mod
  Slot  Module Description                     Serial Number  Status   Dump  Ver
  ----- -------------------------------------- -------------- -------- ----- ---
  MM1   HP J9827A Management Module 5400Rzl2   SG87G4C34Z     Active   YES   1


  A     HP J9990A 20p PoE+ / 4p SFP+ v3 zl2... SG68GPG2QH     Up       YES   3

 

  • In above case the only interface module connected is a v3 module. But we still get the error when we try to enable BFD 

 

HP-Switch-5406Rzl2# configure terminal

HP-Switch-5406Rzl2(config)# bfd enable
BFD is not supported on V1 or V2 modules.

HP-Switch-5406Rzl2(config)# show bfd-session​
 Bidirectional Forwarding Detection (BFD) Information

 BFD Admin Status  :  Disabled

 



Solution

 

  • BFD is only supported in v3 modules and will not work with v2 modules
  • allow-v2-modules need to be disabled and the switch has to be reloaded to fix the issue


HP-Switch-5406Rzl2# configure terminal
HP-Switch-5406Rzl2(config)# no allow-v2-modules
This command will disable all V2 modules and reboot the switch.
Continue (y/n)? y


Rebooting the System
 

  • The output of show modules after reboot looks like below

 

HP-Switch-5406Rzl2# show modules

 Status and Counters - Module Information

  Chassis: 5406Rzl2 J9850A         Serial Number:   SG69GPR1QY

  Allow V2 Modules:   No

                                                                       Core  Mod
  Slot  Module Description                     Serial Number  Status   Dump  Ver
  ----- -------------------------------------- -------------- -------- ----- ---
  MM1   HP J9827A Management Module 5400Rzl2   SG87G4C34Z     Active   YES   1


  A     HP J9990A 20p PoE+ / 4p SFP+ v3 zl2... SG68GPG2QH     Up       YES   3

 

  • Now BFD can be enabled on the switch

 

HP-Switch-5406Rzl2(config)# bfd enable

HP-Switch-5406Rzl2(config)# show bfd-session


 Bidirectional Forwarding Detection (BFD) Information

  Administrative Status : Enabled
  Echo Source IP        :

  Maximum number of sessions supported         : 128
  Number of sessions reserved for internal use : 0
  Total Number of Sessions : 0
  Number of Sessions Up    : 0
  Number of Sessions Down  : 0

  Global Statistics:
  Total Number of Control Packets Transmitted  : 0
  Total Number of Control Packets Received     : 0
  Total Number of Control Packets Dropped      : 0

  Session  VLAN   Source IP        Destination IP   Echo       State
 Application
  -------- ------ ---------------- ---------------- ---------- -----------
 -----------

Version history
Revision #:
1 of 1
Last update:
‎04-02-2020 02:09 PM
Updated by:
 
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