
Customizing WAN Interfaces
115391-A Rev. A 4-13
Editing HSSI Lines
The following sections describe how to change the default settings for HSSI link
modules:
• Enabling or Disabling a HSSI Line
• Enabling or Disabling Breath of Life Messages
• Setting the BofL Interval
• Setting the Maximum Transmission Unit Buffer Size
• Setting the Transmission Interface
• Viewing the Configured WAN Protocol
• Setting the External Clock Speed
• Setting the CRC Size
Enabling or Disabling a HSSI Line
By default, the BayStream software 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 BayStream software transmits proprietary Ethernet-encapsulated
Breath of Life (BofL) messages over a point-to-point connection between the
local BayStream platform and a remote peer. The exchange of BofL messages
provides a level of confidence in the point-to-point connection.
With BofL enabled, the BayStream software sends periodic keepalive 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.
Site Manager: Enable parameter: page A-28
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