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JUNOSe 11.1.x IP Services Configuration Guide
session to be down. In either case, all routes learned from the failed peer are purged
immediately.
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).
BFD Platform Considerations
For information about modules that support BFD on the ERX7xx models, ERX14xx
models, and the ERX310 Broadband Services Router:
For information about modules that support BFD on the E120 and E320 Broadband
Services Routers:
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.
BFD References
For information about BFD, see the following:
116
BFD Platform Considerations
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.
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.
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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