
Configuring WAN Line Services
A-14 117021-A Rev. A
Parameter: Transmission Interface
Path: HSSI Connector > Edit Line > Edit HSSI Parameters
Default: DS3
Options: DS1
| DS3
Function: Specifies the appropriate MIB for the local management interface (LMI) to use,
as long as you enable LMI and configure SMDS or Frame Relay across the
HSSI interface. The HSSI driver provides no support for either the DS1 or DS3
MIB. Rather, the external DCE (for example, a DL3200 SMDS CSU/DSU from
Digital Link) may provide MIB support.
Instructions: Select a DS1 MIB (specified by RFC 1232) or a DS3 MIB (specified by RFC
1233) depending on the carrier services the attached DCE device provides (DS1
at 1.54 MB/s, or DS3 at 44.736 MB/s).
MIB Object ID: 1.3.6.1.4.1.18.3.4.7.1.13
Parameter: External Clock Speed
Path: HSSI Connector > Edit Line > Edit HSSI Parameters
Default: 46359642 (44.736 MB/s)
Options: 307200 to 52638515
Function: Specifies the bandwidth that the HSSI channel provides.
The HSSI specification requires that the DCE provide a transmit clock that
times data transfer across the DTE/DCE interface. The value you set for this
parameter does not actually affect hardware initialization. Some routing
protocol software uses this parameter value for route selection.
Instructions: Enter a value equal or close to the data transmission rate across the HSSI.
MIB Object ID: 1.3.6.1.4.1.18.3.4.7.14
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