Brocade BigIron RX Series Configuration Guide - Manual (Page 1062)

984 BigIron RX Series Configuration Guide
53-1002484-04
Configuring BFD parameters
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NOTE
BFD supports multi-slot trunks in cases where all BFD packet are transmitted only on a single path
which does not change unless the trunk active membership changes. BFD is not be supported on
multi-slot trunks where per-packet switching is used such that the path taken by the BFD packets
will vary per packet.
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.
BigIron RX(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 router 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 router waits to receive a BFD
message from its peer. The router will wait 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 set with this command are the intervals desired by the
local router. The actual values in use will be the negotiated values.
The <number> variable specifies the number of times in a single sequence that this router 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.
Number of BFD sessions supported
The device supports a maximum of 100 BFD sessions per system with a maximum number of 20
sessions per interface module. This number is inclusive of the fact that IS-IS and OSPF sessions on
an interface module will include both transmit and receive sessions. Consequently, the 20
sessions per interface module actually corresponds to 40 sessions where each OSPF and IS-IS
session consumes two sessions (one transmit and one receive).
Disabling BFD Syslog messages
Syslog messages are generated for BFD operation. These messages are described in “Brocade
Syslog messages” . Logging of these messages is enabled by default. To disable logging of BFD
messages use the following command.
BigIron RX(config)# no logging enable bfd