Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 945)

Multi-Service IronWare Switching Configuration Guide 915
53-1003036-02
Configuring BFD parameters
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Unlike IS-IS and OSPF however, the Tx and Rx sessions for MPLS BFD can reside on different
interface modules. This means that when counting MPLS BFD sessions against the Interface
Module maximum, the Tx and Rx sessions must be counted separately. In practice this means that
the maximum number of sessions per-Interface Module is 80; where each Tx and Rx session for
MPLS BFD is counted as 1 and IS-IS and OSPF BFD sessions are counted as 2 towards a
per-Interface Module maximum number of sessions of 80.
NOTE
This BFD session support is applicable to XMR series, MLX series, and the MLXe series only.
Configuring BFD parameters
When you configure BFD you must set timing and interval parameters. These are configured on
each interface. When two adjacent interfaces with BFD are configured, they negotiate the
conditions for determining if the connection between them is still active. The following command is
used to set the BFD parameters:
Brocade(config-if-e1000-3/1)# bfd interval 100 min-rx 100 multiplier 3
Syntax: [no] bfd interval transmit-time min-rx receive-time multiplier number
The transmit-time variable is the interval in milliseconds between which this device will send a BFD
message to its peer informing it that it is still operational. This value is specified in milliseconds.
Acceptable values are: 50 - 30000.
The receive-time variable is the interval in milliseconds that this device waits to receive a BFD
message from its peer. The device waits for this interval for the number of times specified in the
number variable before determining that the connection to its peer in not operational. Acceptable
values are: 50 - 30000.
NOTE
The transit-time and receive-time variables are the intervals desired by the local device. The actual
values in use will be the negotiated values.
The number variable specifies the number of times in a single sequence that this device will wait to
receive a BFD message from its peer before determining that the connection to that peer is not
operational. Acceptable values are: 3 - 50.
Disabling BFD Syslog messages
Syslog messages are generated for BFD operations. Logging of these messages is enabled by
default. To disable logging of BFD messages use the following command:
Brocade(config)# no logging enable bfd
Syntax: [no] logging enable bfd
BFD logging is enabled by default. If you disable BFD logging as shown, you can re-enable it by
using the logging enable bfd command.