
Customizing WAN Interfaces
114078 Rev. A 4-13
Enabling or Disabling a HSSI Line
By default, the router enables HSSI line services when you add the interface. You
can enable or disable this interface without moving physical cabling.
Enabling or Disabling Breath of Life Messages
By default, the router transmits proprietary Ethernet-encapsulated Breath of Life
(BofL) messages over a point-to-point connection between the local router and a
remote peer. The exchange of BofL messages provides a level of confidence in the
point-to-point connection.
With BofL enabled, the router sends periodic keep-alive messages to the remote
peer. If you enable BofL locally, you must also configure the remote peer to
enable BofL.
We recommend that you enable BofL for point-to-point connections between Bay
Networks peers. However, you must disable BofL if such a connection occurs
through a wide-area transport service such as Frame Relay or SMDS.
You can enable or disable transmission of BofL messages on this interface.
Setting the BofL Interval
This parameter is valid only if BofL is enabled on the interface.
After sending a BofL message, the router starts a timer that has a value equal to 5
times the setting of this parameter. If the router does not receive a BofL message
from the remote peer before the timer expires, the router disables the HSSI circuit,
and then attempts to restart it.
Both ends of the point-to-point connection must be configured with the same
interval value.
Site Manager: Enable parameter: page A-28
Site Manager: BofL parameter: page A-29
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