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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

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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.

cisco cisco-ios-15 ios-xe bfd

share|improve this question

edited Apr 16 at 14:21

jonathanjo

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asked Apr 16 at 14:00

Mario JostMario Jost

3481010 bronze badges

add a comment
 | 

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.

cisco cisco-ios-15 ios-xe bfd

share|improve this question

edited Apr 16 at 14:21

jonathanjo

13.8k11 gold badge1212 silver badges4343 bronze badges

asked Apr 16 at 14:00

Mario JostMario Jost

3481010 bronze badges

add a comment
 | 

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

edited Apr 16 at 14:21

jonathanjo

13.8k11 gold badge1212 silver badges4343 bronze badges

asked Apr 16 at 14:00

Mario JostMario Jost

3481010 bronze badges

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)#

share|improve this question

edited Apr 16 at 14:21

jonathanjo

13.8k11 gold badge1212 silver badges4343 bronze badges

asked Apr 16 at 14:00

Mario JostMario Jost

3481010 bronze badges

share|improve this question

edited Apr 16 at 14:21

jonathanjo

13.8k11 gold badge1212 silver badges4343 bronze badges

asked Apr 16 at 14:00

Mario JostMario Jost

3481010 bronze badges

edited Apr 16 at 14:21

jonathanjo

13.8k11 gold badge1212 silver badges4343 bronze badges

edited Apr 16 at 14:21

jonathanjo

13.8k11 gold badge1212 silver badges4343 bronze badges

asked Apr 16 at 14:00

Mario JostMario Jost

3481010 bronze badges

asked Apr 16 at 14:00

Mario JostMario Jost

3481010 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

edited Apr 16 at 14:41

answered Apr 16 at 14:32

user56700user56700

1,55111 gold badge33 silver badges1212 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
  

  
  
  
  

add a comment
 | 

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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

edited Apr 16 at 14:41

answered Apr 16 at 14:32

user56700user56700

1,55111 gold badge33 silver badges1212 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
  

  
  
  
  

add a comment
 | 

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

edited Apr 16 at 14:41

answered Apr 16 at 14:32

user56700user56700

1,55111 gold badge33 silver badges1212 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
  

  
  
  
  

add a comment
 | 

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

edited Apr 16 at 14:41

answered Apr 16 at 14:32

user56700user56700

1,55111 gold badge33 silver badges1212 bronze badges

share|improve this answer

edited Apr 16 at 14:41

answered Apr 16 at 14:32

user56700user56700

1,55111 gold badge33 silver badges1212 bronze badges

answered Apr 16 at 14:32

user56700user56700

1,55111 gold badge33 silver badges1212 bronze badges

answered Apr 16 at 14:32

user56700user56700

1,55111 gold badge33 silver badges1212 bronze badges