Filter
Top Products
RuggedRouter® User Guide
Editing A Logical Interface (Frame Relay)
Figure 59: Edit Logical Interface (Frame Relay)
This menu allows you to configure Frame Relay link and logical interface fields.
Frame Relay Link Parameters
The first table presents the link parameters and applies to all logical interfaces.
The Station Type field determines whether the router acts as a customer premises
equipment or as a frame relay switch. When a Frame Relay network provider is used,
the CPE interface should be chosen. When the connection is end to end, it is typical
to set the central site end to switch and the remote end to be CPE.
The Signaling type field reflects the Frame Relay link management protocol used,
which include ANSI T1.617 Annex D, LMI and Q.933 signaling.
The Link Failure field determines whether the IP interface should reflect the state of
the T1 (connected/disconnected). If you are using SNMP, enable this option as
SNMP uses the state of the interface to determine the state of the connection.
The T391 (Link Integrity Verification polling) timer is valid at the CPE and indicates
the number of seconds between the transmission of In-channel Signaling messages.
The T392 (verification of polling cycle) timer is valid at the Switch and indicates the
expected number of seconds between the reception of In-channel Signaling messages
transmitted by the CPE.
The N391 counter is valid at the CPE and defines the frequency of transmission of
Full Status enquiry messages.
The N392 counter is valid at both the CPE and the Switch and defines the number of
errors during N393 events which cause the channel to be inactive.
The N393 counter is valid at both the CPE and the Switch and is an event counter for
measuring N392.
The EEK Type field controls whether End to End Keepalive messages are sent while
operating as a CPE device. If this option is set to “Off”, EEK is disabled. If this
option is set to “Request”, EEK messages are sent every EEK Timer x T391 seconds.
This timer may be configured from 1 to 100 periods in duration.
Your network provider will inform you of what is proper for these parameters.
70 RuggedCom