Configuring A Bfd License; Bfd Version Support; Table 7: Determining Bfd Versions - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - IP SERVICES CONFIGURATION GUIDE 2010-10-01 Configuration Manual

Configuring a BFD License

license bfd

BFD Version Support

Copyright © 2010, Juniper Networks, Inc.
You must configure a BFD license before the router configuration can use any BFD
commands.
Use to specify a BFD license.
Purchase a BFD license to allow BFD configuration on the E Series router.
NOTE: Acquire the BFD license from Juniper Networks Customer Service
or your Juniper Networks sales representative.
Example
host1(config)#license bfd license-value
Use the no version to disable the license.
See license bfd.
The JunosE Software supports both BFD Version 0 and BFD Version 1. When establishing
a BFD neighbor session, the E Series router attempts to establish version 0 or version 1
sessions based on the capability of the BFD neighbor. Table 7 on page 111 indicates how
the routers establish sessions based on BFD version support:

Table 7: Determining BFD Versions

E Series Routers Running
JunosE 7.2.x (and later)
and Other Routers
E Series Routers Running
Software Versions
Earlier than JunosE 7.2.x
and Other Routers
Other Routers
E Series Routers
Running JunosE
7.2.x (and later)
BFD Version Version 0 and Version
Support 1
Version 0 and Result = Version 1
Version 1
Version 0 Only Result = Version 0
Version 1 Only Result = Version 1
Chapter 4: Configuring BFD
E Series Routers
Running Software
Versions Earlier than
JunosE 7.2.x
Version 0 Only
Result = Version 0
Result = Version 0
No session
(version mismatch)
111