Perle Systems IOLAN SCS User Manual

Page 146

Serial Port Profiles

146

IOLAN SDS/SCS/STS User’s Guide, Version 3.6

IPv6 Remote
Interface Identifier

The remote IPv6 interface identifier of the remote end of the PPP link. Choose
an address that is part of the same network or subnetwork as the IOLAN. If
you enable

Negotiate IP Address Automatically

, the IOLAN will ignore the

remote IP address value you enter here and will allow the remote end to
specify its IP address. If your user is authenticated by RADIUS and the
RADIUS parameter

Framed-Interface-ID

is set in the RADIUS file, the

IOLAN will use the value in the RADIUS file in preference to the value
configured here.

Field Format: The first 64 bits of the Interface Identifier must be zero,
therefore, ::abcd:abcd:abcd:abcd is the expected format.

ACCM

Specifies the ACCM (Asynchronous Control Character Map) characters that
should be escaped from the data stream.

Field Format: This is entered as a 32-bit hexadecimal number with each bit
specifying whether or not the corresponding character should be escaped. The
bits are specified as the most significant bit first and are numbered 31-0. Thus
if bit 17 is set, the 17th character should be escaped, that is, 0x11 (XON). The
value 000a0000 will cause the control characters 0x11 (XON) and 0x13
(XOFF) to be escaped on the link, thus allowing the use of XON/XOFF
(software) flow control. If you have selected

Soft Flow Control

on the

Serial

Port

, you must enter a value of at least

000a0000

for the

ACCM

Default: 00000000, which means no characters will be escaped

MRU

The Maximum Receive Unit (MRU) parameter specifies the maximum size of
PPP packets that the IOLAN’s port will accept. If your user is authenticated by
the IOLAN, the

MRU

value will be overridden if you have set a

MTU

value for

the user. If your user is authenticated by RADIUS and the RADIUS parameter

Framed-MTU

is set in the RADIUS file, the IOLAN will use the value in the

RADIUS file in preference to the value configured here.

Range: 64-1500 bytes

Default: 1500

Authentication

The type of authentication that will be done on the link. You can use

PAP

CHAP

to authenticate a serial port or user on the IOLAN, from a remote

location, or authenticate a remote client/device, from the IOLAN.

When setting either

PAP

and

CHAP

, make sure the IOLAN and the remote

client/device have the same setting. For example, if the IOLAN is set to

PAP

but the remote end is set to

CHAP

, the connection will be refused.

Data Options:

None

PAP—is a one time challenge of a client/device requiring that it respond
with a valid username and password. A timer operates during which
successful authentication must take place. If the timer expires before the
remote end has been authenticated successfully, the link will be
terminated.

CHAP—challenges a client/device at regular intervals to validate itself
with a username and a response, based on a hash of the secret (password).
A timer operates during which successful authentication must take place.
If the timer expires before the remote end has been authenticated
successfully, the link will be terminated.

Default: CHAP