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Use BFD on a Virtual-Template Interface


Cisco: Using carrier-delay with BFD on the same interfaceWhat is the difference between UDLD and BFD?BFD on BGP at ASR 1kBFD Echo packetcapturing specific BFD packets using tcpdumpHow to define a static route from LAN device through IPSec endpoint to PeerNAT on outside interface alternativesConfiguring BFD for OSPFv3 between IOS-XE and JunOS






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty
margin-bottom:0;









3















I would like to know how I can configure Bidirectional Forward Detection on a Virtual-Template interface. Tested on IOSv and IOS-XE (ISR-4451):



router#configure terminal 
Enter configuration commands, one per line. End with CNTL/Z.
router(config)#interface Virtual-Template99 type tunnel
router(config-if)#bfd ?
% Unrecognized command
router(config-if)#exit
router(config)#interface tunnel 99
router(config-if)#bfd ?
echo Use echo adjunct as bfd detection mechanism
interval Transmit interval between BFD packets
template BFD template
router(config-if)#


This is a FlexVPN environment where we want to use BFD.










share|improve this question
































    3















    I would like to know how I can configure Bidirectional Forward Detection on a Virtual-Template interface. Tested on IOSv and IOS-XE (ISR-4451):



    router#configure terminal 
    Enter configuration commands, one per line. End with CNTL/Z.
    router(config)#interface Virtual-Template99 type tunnel
    router(config-if)#bfd ?
    % Unrecognized command
    router(config-if)#exit
    router(config)#interface tunnel 99
    router(config-if)#bfd ?
    echo Use echo adjunct as bfd detection mechanism
    interval Transmit interval between BFD packets
    template BFD template
    router(config-if)#


    This is a FlexVPN environment where we want to use BFD.










    share|improve this question




























      3












      3








      3








      I would like to know how I can configure Bidirectional Forward Detection on a Virtual-Template interface. Tested on IOSv and IOS-XE (ISR-4451):



      router#configure terminal 
      Enter configuration commands, one per line. End with CNTL/Z.
      router(config)#interface Virtual-Template99 type tunnel
      router(config-if)#bfd ?
      % Unrecognized command
      router(config-if)#exit
      router(config)#interface tunnel 99
      router(config-if)#bfd ?
      echo Use echo adjunct as bfd detection mechanism
      interval Transmit interval between BFD packets
      template BFD template
      router(config-if)#


      This is a FlexVPN environment where we want to use BFD.










      share|improve this question
















      I would like to know how I can configure Bidirectional Forward Detection on a Virtual-Template interface. Tested on IOSv and IOS-XE (ISR-4451):



      router#configure terminal 
      Enter configuration commands, one per line. End with CNTL/Z.
      router(config)#interface Virtual-Template99 type tunnel
      router(config-if)#bfd ?
      % Unrecognized command
      router(config-if)#exit
      router(config)#interface tunnel 99
      router(config-if)#bfd ?
      echo Use echo adjunct as bfd detection mechanism
      interval Transmit interval between BFD packets
      template BFD template
      router(config-if)#


      This is a FlexVPN environment where we want to use BFD.







      cisco cisco-ios-15 ios-xe bfd






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Apr 16 at 14:21









      jonathanjo

      13.8k1 gold badge12 silver badges43 bronze badges




      13.8k1 gold badge12 silver badges43 bronze badges










      asked Apr 16 at 14:00









      Mario JostMario Jost

      34810 bronze badges




      34810 bronze badges























          1 Answer
          1






          active

          oldest

          votes


















          5
















          Bidirectional Forward Detection (BFD) has been deactivated on virtual and dialer interfaces on newer IOS and IOS-XE versions.




          On earlier releases like IOS-XE 3S, the Cisco IOS software incorrectly
          allowed configuration of BFD on virtual-template and dialer
          interfaces; however, BFD functionality on virtual-template and dialer
          interfaces is not supported. Avoid configuring BFD on
          virtual-template and dialer interfaces.




          That is what the Cisco configuration guide says for BFD on IOS XE:



          https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bfd/configuration/xe-3s/irb-xe-3s-book/irb-bi-fwd-det.html






          share|improve this answer



























          • Thank you for the explanation. So is there another alternative on how to use BFD in a FlexVPN environment? I found a cisco FlexVPN configuration example with BFD, but they use manually created tunnel interfaces on the hubs, i mean what the heck? cisco.com/c/en/us/support/docs/security/flexvpn/…

            – Mario Jost
            Apr 16 at 15:35






          • 1





            @MarioJost I'm really sorry sir, i do not know of any alternatives.

            – user56700
            Apr 16 at 16:36












          Your Answer








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          1 Answer
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          active

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          active

          oldest

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          5
















          Bidirectional Forward Detection (BFD) has been deactivated on virtual and dialer interfaces on newer IOS and IOS-XE versions.




          On earlier releases like IOS-XE 3S, the Cisco IOS software incorrectly
          allowed configuration of BFD on virtual-template and dialer
          interfaces; however, BFD functionality on virtual-template and dialer
          interfaces is not supported. Avoid configuring BFD on
          virtual-template and dialer interfaces.




          That is what the Cisco configuration guide says for BFD on IOS XE:



          https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bfd/configuration/xe-3s/irb-xe-3s-book/irb-bi-fwd-det.html






          share|improve this answer



























          • Thank you for the explanation. So is there another alternative on how to use BFD in a FlexVPN environment? I found a cisco FlexVPN configuration example with BFD, but they use manually created tunnel interfaces on the hubs, i mean what the heck? cisco.com/c/en/us/support/docs/security/flexvpn/…

            – Mario Jost
            Apr 16 at 15:35






          • 1





            @MarioJost I'm really sorry sir, i do not know of any alternatives.

            – user56700
            Apr 16 at 16:36















          5
















          Bidirectional Forward Detection (BFD) has been deactivated on virtual and dialer interfaces on newer IOS and IOS-XE versions.




          On earlier releases like IOS-XE 3S, the Cisco IOS software incorrectly
          allowed configuration of BFD on virtual-template and dialer
          interfaces; however, BFD functionality on virtual-template and dialer
          interfaces is not supported. Avoid configuring BFD on
          virtual-template and dialer interfaces.




          That is what the Cisco configuration guide says for BFD on IOS XE:



          https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bfd/configuration/xe-3s/irb-xe-3s-book/irb-bi-fwd-det.html






          share|improve this answer



























          • Thank you for the explanation. So is there another alternative on how to use BFD in a FlexVPN environment? I found a cisco FlexVPN configuration example with BFD, but they use manually created tunnel interfaces on the hubs, i mean what the heck? cisco.com/c/en/us/support/docs/security/flexvpn/…

            – Mario Jost
            Apr 16 at 15:35






          • 1





            @MarioJost I'm really sorry sir, i do not know of any alternatives.

            – user56700
            Apr 16 at 16:36













          5














          5










          5









          Bidirectional Forward Detection (BFD) has been deactivated on virtual and dialer interfaces on newer IOS and IOS-XE versions.




          On earlier releases like IOS-XE 3S, the Cisco IOS software incorrectly
          allowed configuration of BFD on virtual-template and dialer
          interfaces; however, BFD functionality on virtual-template and dialer
          interfaces is not supported. Avoid configuring BFD on
          virtual-template and dialer interfaces.




          That is what the Cisco configuration guide says for BFD on IOS XE:



          https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bfd/configuration/xe-3s/irb-xe-3s-book/irb-bi-fwd-det.html






          share|improve this answer















          Bidirectional Forward Detection (BFD) has been deactivated on virtual and dialer interfaces on newer IOS and IOS-XE versions.




          On earlier releases like IOS-XE 3S, the Cisco IOS software incorrectly
          allowed configuration of BFD on virtual-template and dialer
          interfaces; however, BFD functionality on virtual-template and dialer
          interfaces is not supported. Avoid configuring BFD on
          virtual-template and dialer interfaces.




          That is what the Cisco configuration guide says for BFD on IOS XE:



          https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bfd/configuration/xe-3s/irb-xe-3s-book/irb-bi-fwd-det.html







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Apr 16 at 14:41

























          answered Apr 16 at 14:32









          user56700user56700

          1,5511 gold badge3 silver badges12 bronze badges




          1,5511 gold badge3 silver badges12 bronze badges















          • Thank you for the explanation. So is there another alternative on how to use BFD in a FlexVPN environment? I found a cisco FlexVPN configuration example with BFD, but they use manually created tunnel interfaces on the hubs, i mean what the heck? cisco.com/c/en/us/support/docs/security/flexvpn/…

            – Mario Jost
            Apr 16 at 15:35






          • 1





            @MarioJost I'm really sorry sir, i do not know of any alternatives.

            – user56700
            Apr 16 at 16:36

















          • Thank you for the explanation. So is there another alternative on how to use BFD in a FlexVPN environment? I found a cisco FlexVPN configuration example with BFD, but they use manually created tunnel interfaces on the hubs, i mean what the heck? cisco.com/c/en/us/support/docs/security/flexvpn/…

            – Mario Jost
            Apr 16 at 15:35






          • 1





            @MarioJost I'm really sorry sir, i do not know of any alternatives.

            – user56700
            Apr 16 at 16:36
















          Thank you for the explanation. So is there another alternative on how to use BFD in a FlexVPN environment? I found a cisco FlexVPN configuration example with BFD, but they use manually created tunnel interfaces on the hubs, i mean what the heck? cisco.com/c/en/us/support/docs/security/flexvpn/…

          – Mario Jost
          Apr 16 at 15:35





          Thank you for the explanation. So is there another alternative on how to use BFD in a FlexVPN environment? I found a cisco FlexVPN configuration example with BFD, but they use manually created tunnel interfaces on the hubs, i mean what the heck? cisco.com/c/en/us/support/docs/security/flexvpn/…

          – Mario Jost
          Apr 16 at 15:35




          1




          1





          @MarioJost I'm really sorry sir, i do not know of any alternatives.

          – user56700
          Apr 16 at 16:36





          @MarioJost I'm really sorry sir, i do not know of any alternatives.

          – user56700
          Apr 16 at 16:36


















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