Bfd Platform Considerations; Bfd References - Juniper JUNOSE SOFTWARE FOR E SERIES 11.3.X - IP SERVICES CONFIGURATION GUIDE 2010-10-01 Configuration Manual

JunosE 11.3.x IP Services Configuration Guide

BFD Platform Considerations

BFD References

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NOTE: Before the router can use any bfd-liveness-detection command, you
must specify a BFD license key. To view an already configured license, use
the show license bfd command.
NOTE: During a stateful SRP switchover, the BFD transmit interval is set to
1000 ms with a detection multiplier of 3. These values result in a liveness
detection interval of 3000 ms. This longer interval helps prevent a BFD
timeout during the switchover. BFD negotiates the interval with the remote
peer before applying the temporary change. The BFD timers revert back to
the configured values after 15 minutes (the maximum duration for graceful
restart completion).
For information about modules that support BFD on the ERX7xx models, ERX14xx models,
and the ERX310 Broadband Services Router:
See ERX Module Guide, Table 1, Module Combinations for detailed module specifications.
See ERX Module Guide, Appendix A, Module Protocol Support for information about the
modules that support BFD.
For information about modules that support BFD on the E120 and E320 Broadband
Services Routers:
See E120 and E320 Module Guide, Table 1, Modules and IOAs for detailed module
specifications.
See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information
about the modules that support BFD.
The ES2 4G LM supports faster transmission and failure detection. On this module, the
configurable BFD timer range for each routing protocol is extended from a minimum of
100 ms to 10 ms.
For information about BFD, see the following:
BFD for IPv4 and IPv6 (Single Hop)—draft-ietf-bfd-v4v6-1hop-00.txt (January 2005
expiration)
Bidirectional Forwarding Detection—draft-ietf-bfd-base-00.txt. (January 2005
expiration)
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