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Unable to configure BFD for ASR920



If suddenly license expired, will router unable to be configured with BFD? Originally, router is configured using BFD. Then, noticed that router down and unreachable remotely. But later when I checked the syslog, there was no log that indicate BFD was down after the log that indicate that license was expired.


PID: ASR-920-12CZ-D

Software: 03.17.01.S / 15.6(1)S1

License: metroipaccess


Router#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Router(config)#bfd ?
% Unrecognized command
% Invalid input detected at '^' marker.

Configure commands:
aaa Authentication, Authorization and Accounting.
access-list Add an access list entry
accounting Policy accounting feature
acr Configure ACR type
alarm-contact Configure the system alarm contact settings
alias Create command alias
archive Archive the configuration
arp Set a static ARP entry
async-bootp Modify system bootp parameters
audit Router Audit
auto-ip-ring Auto-IP-Ring global configuration commands
autonomic Autonomic Networking
banner Define a login banner
bba-group Configure BBA Group
beep Configure BEEP (Blocks Extensible Exchange Protocol)
boot Modify system boot parameters
bridge Bridge Group.
bridge-domain Bridge-domain global configuration commands
buffers Adjust system buffer pool parameters
bulkstat Bulkstat Application

Thank you



6 Replies 6

Georg Pauwen
VIP Master VIP Master
VIP Master



can you enable BFD on an interface rather than globally ?



Hi Georg Pauwen 


Same. Cannot configure.


Router(config)#interface bdi1000
Router(config-if)#bfd ?
% Unrecognized command

Below are the original configuration from backup rancid.

bfd-template single-hop BFD300
 interval min-tx 300 min-rx 300 multiplier 3
bfd-template single-hop BFD999
 interval min-tx 999 min-rx 999 multiplier 3

interface BDI1000
 description ## PrimaryDATA
 bandwidth 150000
 vrf forwarding DATA
 ip address
 bfd template BFD300
interface BDI1001
 description ## SecondaryDATA
 bandwidth 150000
 vrf forwarding TMLTE_DATA
 ip address
 bfd template BFD999



you need Cisco IOS XE Release 3.5S to run BFD on BDI interfaces. From your previous output it looks like you are running 03.17.01.S.

I don't think the issue is due to the ios version because i have hundred routers using the same ios-xe 3.17s running with BFD and working fine.




is this a production router ? I would schedule downtime, reset the entire config (wr erase), reload, and reconfigure everything from scratch...

Thank you for the suggestion. Will try later.

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