Filter
Top Products
Black Box Console Server user guide 84
ACCM This allows the specification of an accm (asynchronous control character map) of
characters that should be escaped from the data stream. 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 most significant bit first and are numbered 31-0. Thus if bit 17
is set, the 17th character should be escaped i.e. 0x11 (XON). So entering the value
000a0000 (in the cli, e.g.: set ppp li 1 accm 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 software flow control on the line (see Setting up the line on page
75) you must enter a value of 000a0000 for the ACCM.
The default value is 00000000, which means no characters will be escaped.
Max. receive
unit
The Maximum Receive Unit (mru) parameter specifies the maximum size of PPP
packets that the unit’s port will accept. Enter a value in bytes between 64 and 1500;
e.g. 512 (in the cli, example syntax would be: set ppp li 1 mru 512). The default value
is 1500. For more information on this parameter see Configuring a user account on
page 100, sub-section ‘framed mtu’.
If your user is authenticated by the unit the ‘mru’ value will be overridden when you
have set a ‘framed mtu’ value for the user; see Configuring a user account on page
100, sub-section ‘framed mtu’.
If your user is authenticated by RADIUS and the RADIUS parameter ‘Framed-
MTU’ is set in the RADIUS file the unit will use the value in the RADIUS file in
preference to the ‘mru’ value configured here.
Security This specifies what type of authentication will be done on the link: none, PAP or
CHAP. The default is CHAP.
You can use PAP and/or CHAP to:
• authenticate a port or user on the unit, from a remote location, or
• authenticate a remote client/device, from the unit.
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.