Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 976)

946 Multi-Service IronWare Switching Configuration Guide
53-1003036-02
Configuring BFD for RSVP-TE LSPs
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vll-local
The vll-local option displays the vll-local configuration information specified by the
vll_local_name variable.
vpls
The vpls option displays the VPLS configuration information specified by the vpls_name
variable.
Command
modes
This command operates in all modes.
Usage guidelines The show mpls config command and show mpls config lsp command displays the BFD
configuration if and only if it is not the default setting.
History
Related
commands
None.
Configuring BFD for RSVP-TE LSPs
BFD can be configured for use with RSVP-LSPs to detect data plane failures for MPLS LSPs.
Although the LSP ping facility can also be used for this purpose, BFD provides the following
advantages:
• BFD provides faster failure detection because it does not required control plane verification,
which is required by LSP ping.
• BFD can be used to detect faults on a large number of LSPs without requiring manual
interaction, which is required by LSP ping.
BFD configuration for RSVP-TE LSPs is performed at the global and LSP levels, as described:
• BFD for RSVP-TE LSPs global configuration – allows you to enable and disable BFD on all of the
RSVP-TE LSPs that have been configured for BFD at the LSP level. In addition, use the global
command to set revised default values for the transmit interval, receive interval, and for the
detection time multiplier for all BFD sessions on RSVP-TEs. This configuration command can
also be used as a convenient method to turn BFD for MPLS on or off.
• BFD for RSVP-TE LSPs configuration at the LSP level – allows you to enable and disable BFD for
individual RSVP-TE LSPs. You can also change the values for the transmit interval, receive
interval, and for the detection time multiplier from the default values. If these values are not
specified at this level, they are obtained from the values configured at the global level.
BFD, which is disabled by default, can be enabled or disabled at the global MPLS level, or for each
individual LSP without affecting the LSP operational status. BFD parameters can also be changed
without changing the state of the BFD session.
Release Command history
Multi-Service IronWare Release 05.6.00 This command now displays the BFD configuration if and only if it is not
the default setting.
Multi-Service IronWare Release 05.5.00 This command was enhanced to display the label withdrawal delay
setting.