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Serial port configuration task list
168
SmartWare Software Configuration Guide
14 • Serial port configuration
Mode: Frame Relay
Example:
Configuring the LMI type
The following example sets the LMI type to ANSI T1.617 Annex D for Frame Relay over the serial interface
on slot 0 and port 0.
node(cfg)#port serial 0 0
node(prt-ser)[0/0]#framerelay
node(frm-rel)[0/0]#lmi-type ansi
Configuring the keep-alive interval
A keep-alive interval must be set to configure the LMI. By default, this interval is 10 seconds and, according to
the LMI protocol, must be less than the corresponding interval on the switch. The keep-alive interval in sec-
onds, which is represented by number, has to be in the range from 1 to 3600.
This procedure describes how to set the keep-alive interval
Mode: Frame Relay
To disable keep-alives on networks that do not utilize LMI, use the
no keepalive
interface
configuration command.
Example:
Configuring the keep-alive interval
The following example sets the keepalive interval to 10 seconds for Frame Relay over the serial interface on slot
0 and port 0.
node(cfg)#port serial 0 0
node(prt-ser)[0/0]#framerelay
node(frm-rel)[0/0]#keepalive 10
Enabling fragmentation
FRF.12 interface and end-to-end fragmentation of large IP packets is supported to reduce the delay imposed
on voice packets on slow links (less than 512 kbps). As opposed to IP fragmentation, Frame Relay fragmenta-
tion is transparent to the IP layer. This leaves IP packets unchanged, which may be important for IP-based
applications susceptible to IP fragmentation.
Step
Command
Purpose
1
node(frm-rel)[
slot/port
]#lmi-type {ansi | gof | itu}
Sets the LMI type
Step
Command
Purpose
1
node(frm-rel)[
slot/port
]#keepalive
number
Sets the LMI keep-alive interval