Com.X Administrator Guide
Page 44
Figure 33: X21 interface configuration
The fields are described in the table below. Note that only PPP mode supports
Automatic IP configuration.
Field
Contents
Name (not editable)
serial0
Description (not
editable)
X21-1
Serial Protocol
IP/HDLC – Raw IP in HDLC encapsulation
Cisco HDLC – Cisco compatible IP HDLC encapsulation
Frame Relay – ANSI/CCITT (ITU) compatible frame relay
encapsulation
PPP – Point-to-Point Protocol
Frame relay LMI
(Only enabled when Serial Protocol is Frame Relay) – Local
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