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Cisco Router and Security Device Manager 2.5 User’s Guide
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Chapter5 Configuring WAN Connections
Configuring a Serial Connection
Configure Clock Settings
The Clock Settings window is available when you are configuring a T1 or E1 link.
The default Frame Relay clock settings are shown in this page. You should not
change them unless you know you have different requirements.
Field Reference
Table 5 -10 describes the fields in this screen.
Cisco LMI type defined jointly by Cisco Systems and three other
companies.
ITU-T Q.933 ITU-T Q.933 Annex A.
Autosense The default. This setting allows the router to detect which LMI type
is being used by communicating with the switch and to then use that
type. If autosense fails, the router will use the Cisco LMI type.
DLCI Enter the DLCI in this field. This number must be unique among all
DLCIs used on this interface.
Use IETF Frame Relay
Encapsulation
Internet Engineering Task Force (IETF) encapsulation. This option
is used with connecting to non-Cisco routers. Check this box if you
are connecting to a non-Cisco router on this inte rface.
Table5-9 LMI and DLCI Fields
Element Description
Table5-10 Clock Settings Fields
Element Description
Clock Source Internal specifies that the clock be generated internally. Line
specifies that the clock source be taken from the network. The clock
synchronizes data transmission. The default is line.
T1 Framing This field configures the T1 or E1 link for operation with D4 Super
Frame (sf) or Extended Superframe (esf). The default is esf.