Table of Contents

slip

To start a serial connection to a remote host by using Serial Line Internet Protocol (SLIP), use the slip command in EXEC mode.

To optimize bandwidth on a line, SLIP enables compression of the SLIP packets using Van Jacobson TCP header compression as defined in RFC 1144.

router> slip
Password:
Entering SLIP mode.
Your IP address is 192.31.7.28, MTU is 1524 bytes

router> slip
IP address or hostname? 192.31.6.15
Password:
Entering SLIP mode
Your IP address is 192.31.6.15, MTU is 1524 bytes

router> slip /default
Password:
Entering SLIP mode
Your IP address is 192.31.6.15, MTU is 1524 bytes
 

router> slip 128.66.2.1 /compressed
Password:
Entering SLIP mode.
Interface IP address is 128.66.2.1, MTU is 1500 bytes.
Header compression will match your system.

router> slip 1.0.0.1@server1
Password:
Entering SLIP mode.
Interface IP address is 1.0.0.1, MTU is 1500 bytes
Header compression will match your system. 

snapshot client

To configure a client router for snapshot routing, use the snapshot client command in interface configuration mode. Use the no form of this command to disable a client router.

interface dialer 1
 snapshot client 5 600 suppress-statechange-updates dialer

snapshot server

To configure a server router for snapshot routing, use the snapshot server command in interface configuration mode. Use the no form of this command to disable a server router.

The following example configures a server router for snapshot routing:

interface dialer 1
 snapshot server 5 

source template

To attach a configured customer profile template to a particular customer profile, use the source template command in customer profile configuration mode.

Syntax Description

name	Customer profile template name.

Defaults

No templates are sourced or attached to a customer profile.

Command Modes

Customer profile configuration

Command History

Release	Modification
12.0(6)T	This command was introduced.

Usage Guidelines

All PPP and peer-default commands are allowed for a particular customer profile template under this grouping.

Examples

The following example shows the creation and configuration of a customer profile template named acme-direct and its subsequent assignment to the customer profile acme1:

template acme-direct
 multilink {max-fragments num | max-links num | min-links num}
 peer match aaa-pools
 peer default ip address pool acme-numbers
 ppp ipcp dns 10.1.1.1  10.2.2.2 
 ppp multilink
 exit
resource-pool profile customer acme1
source template acme-direct

Related Commands

Command	Description
template	Accesses the template configuration mode for configuring a particular customer profile template.

source-ip

To specify an alternate IP address for a Virtual Private Dialup Network (VPDN) tunnel that is different from the physical IP address used to open the tunnel, use the source-ip command in VPDN group configuration mode. To remove the alternate IP address, use the no form of this command.

Syntax Description

ip-address

Alternate IP address (different from the physical IP address used to open the VPDN tunnel) that the router uses to identify the tunnel.

Defaults

Disabled

Command Modes

VPDN group configuration

Command History

Release	Modification
12.0(5)T	This command was introduced.

Usage Guidelines

Each VPDN group on a router can be configured with a unique source-ip command.

Examples

The following example configures a LAC to accept L2TP dialout calls using the alternate IP address 172.23.33.7, which is different from the physical IP address used to open the L2TP tunnel:

vpdn-group 3
 accept-dialout
  protocol l2tp
  dialer 2
 terminate-from hostname orpheus
 source-ip 172.23.33.7

Related Commands

Command	Description
accept dialin	Specifies the LNS to use for authenticating, and the virtual template to use for cloning, new virtual access interfaces when an incoming L2TP tunnel connection is requested from a specific peer.
accept dialout	Accepts requests to tunnel L2TP dial-out calls and creates an accept-dialout VPDN subgroup.
request dialin	Configures a VPDN group to request L2F or L2TP tunnels to a home gateway and creates a request-dialin VPDN subgroup.
request dialout	Enables an LNS to request VPDN dial-out calls by using L2TP.

spe

To access the SPE configuration mode and control the downloading of firmware into the modems, use the spe command in global configuration mode. There is no no version of this command.

{shelf/slot/module} {shelf/slot/module}

Syntax Description

shelf/slot/module

Enter the shelf number, slot number, and module number separated by slashes, as shown. For Cisco AS5200 and AS5300, enter only the slot/module. To specify a range of modems when this option is selected as a start point, use the following set of arguments as an endpoint.

Defaults

None

Command Modes

Global configuration

Command History

Release	Modification
12.0(4)XI1	This command was introduced.
12.0(5)T	This document changed to reflect new information on the command.

Usage Guidelines

The spe global configuration command enables the SPE configuration mode. Configure your SPE by specifying a slot and an SPE associated with the slot; or, you can configure a range of SPEs by specifying the first and last SPE in the range. On AS5800 platforms, you must also specify the shelf associated with the slot and SPE.

When the access server is booted, the spe global configuration command specifies the location from where the firmware image is downloaded to the SPE. If the spe configuration command is used to download the firmware from flash memory and then subsequently the no version of the exact command is entered, then the spe command downloads the embedded firmware.

The spe command was first supported in Cisco IOS Release 12.0(4)XI1 along with the Resource Pool Management feature (although it can be used independently). For earlier images, use the copy command on the Cisco AS5200 and Cisco AS5300, and the modem-pool command on the Cisco AS5800. For the Cisco IOS Release 12.0(5)T images, the copy {flash | system | tftp} modem command will be disabled for firmware and newer version of Microcom modems (i.e., 56Kbps). Old V.34 Microcom modems still use the copy command for downloading in Cisco IOS Release 12.0(5)T images. For Cisco AS5800, downloading firmware through the modem-pool command is disabled.

---

Note Use this command when traffic is low since the spe download does not begin until the modems have no active calls.

---

---

Note The spe command is a configuration command---save it using the write memory command, otherwise the configuration will not be saved. If the configuration is not saved, the downloading of the specified firmware will not occur after the next reboot.

---

Examples

The following example shows the spe command being used from global configuration mode to access the SPE configuration mode for the SPE range from 1/2 to 1/4:

spe 1/2 1/4

Related Commands

Command	Description
request dialin	Configures a VPDN group to request L2F or L2TP tunnels to a home gateway and creates a request-dialin VPDN subgroup.
firmware location	Downloads a firmware image to a modem (SPE configuration).

start-character

To set the flow control start character, use the start-character command in line configuration mode. Use the no form of this command to remove the character.

line 2
 start-character 2

start-chat

To specify that a chat script start on a specified line at any point, use the start-chat command in privileged EXEC mode. Use the no form of this command to stop the chat script.

Syntax Description

regexp	Specifies the name of a regular expression or modem script to be executed. If there is more than one script with a name that matches the argument regexp, the first script found will be used.
line-number	(Optional) Indicates the line number on which to execute the chat script. If you do not specify a line number, the current line number is chosen. If the specified line is busy, the script is not executed and an error message appears. If the dialer-string argument is specified, line-number must be entered; it is not optional if you specify a dialer string. This command functions only on physical terminal (TTY) lines. It does not function on virtual terminal (VTY) lines.
dialer-string	(Optional) String of characters (often a telephone number) to be sent to a DCE. If you enter a dialer string, you must also specify line-number, or the chat script regexp will not start.

Command Modes

Privileged EXEC

Command History

Release	Modification
10.0	This command was introduced.

Usage Guidelines

This command provides modem dialing commands for a chat script that you want to apply immediately to a line. If you do not specify a line, the script runs on the current line. If the specified line is already in use, the script is not activated and an error message appears.

The argument regexp is used to specify the name of the modem script that is to be executed. The first script that matches the argument in this command and the dialer map command will be used. For more information about regular expressions, refer to the "Regular Expressions" appendix in this publication.

This command functions only on physical terminal (TTY) lines. It does not function on virtual terminal lines.

Examples

The following example forces a dialout on line 8 using the script telebit:

start-chat telebit line 8

Related Commands

Command	Description
chat-script	Places calls over a modem and logs in to remote systems.
dialer map	Configures a serial interface or ISDN interface to call one or multiple sites or to receive calls from multiple sites
script activation	Specifies that a chat script start on a physical terminal line when the line is activated.
script connection	Specifies that a chat script start on a physical terminal line when a remote network connection is made to a line.
script dialer	Specifies a default modem chat script.
script reset	Specifies that a chat script start on a physical terminal line when the specified line is reset.
script startup	Specifies that a chat script start on a physical terminal line when the router is powered up.

stop-character

To set the flow control stop character, use the stop-character command in line configuration mode. Use the no form of this command to remove the character.

line 3
 stop-character 5

telnet

To log in to a host that supports Telnet, use the telnet command in EXEC mode.

Table 126 lists the optional telnet command keywords.

Table 126: telnet Command Keyword Options

Option	Description
/debug	Enables Telnet debugging mode.
/encrypt kerberos	Enables an encrypted Telnet session. This keyword is available only if you have the Kerberized Telnet subsystem. If you authenticate using Kerberos Credentials, the use of this keyword initiates an encryption negotiation with the remote server. If the encryption negotiation fails, the Telnet connection will be reset. If the encryption negotiation is successful, the Telnet connection will be established, and the Telnet session will continue in encrypted mode (all Telnet traffic for the session will be encrypted).
/line	Enables Telnet line mode. In this mode, the Cisco IOS software sends no data to the host until you press the Enter key. You can edit the line using the standard Cisco IOS software command-editing characters. The /line keyword is a local switch; the remote router is not notified of the mode change.
/noecho	Disables local echo.
/quiet	Prevents onscreen display of all messages from the Cisco IOS software.
/route path	Specifies loose source routing. The path argument is a list of host names or IP addresses that specify network nodes and ends with the final destination.
/source-interface	Specifies the source interface.
/stream	Turns on stream processing, which enables a raw TCP stream with no Telnet control sequences. A stream connection does not process Telnet options and can be appropriate for connections to ports running Unix-to-Unix Copy Program (UUCP) and other non-Telnet protocols.
port-number	Port number.
bgp	Border Gateway Protocol.
chargen	Character generator.
cmd rcmd	Remote commands.
daytime	Daytime.
discard	Discard.
domain	Domain Name Service.
echo	Echo.
exec	EXEC.
finger	Finger.
ftp	File Transfer Protocol.
ftp-data	FTP data connections (used infrequently).
gopher	Gopher.
hostname	NIC host name server.
ident	Ident Protocol.
irc	Internet Relay Chat
klogin	Kerberos login.
kshell	Kerberos shell.
login	Login (rlogin).
lpd	Printer service.
nntp	Network News Transport Protocol.
node	Connect to a specific LAT node
pop2	Post Office Protocol v2.
pop3	Post Office Protocol v3.
port	Destination LAT port name.
smtp	Simple Mail Transport Protocol.
sunrpc	Sun Remote Procedure Call.
syslog	Syslog.
tacacs	Specify TACACS security.
talk	Talk.
telnet	Telnet.
time	Time.
uucp	Unix-to-Unix Copy Program.
whois	Nickname.
www	World Wide Web.

With the Cisco IOS implementation of TCP/IP, you are not required to enter the connect or telnet commands to establish a terminal connection. You can just enter the learned host name---as long as the following conditions are met:

The Telnet software supports special Telnet commands in the form of Telnet sequences that map generic terminal control functions to operating system-specific functions. To issue a special Telnet command, enter the escape sequence and then a command character. The default escape sequence is Ctrl-^ (press and hold the Ctrl and Shift keys and the 6 key). You can enter the command character as you hold down Ctrl or with Ctrl released; you can use either uppercase or lowercase letters. Table 127 lists the special Telnet escape sequences.

Table 127: Special Telnet Escape Sequences

Escape Sequence1	Purpose
Ctrl-^ b	Break
Ctrl-^ c	Interrupt Process (IP)
Ctrl-^ h	Erase Character (EC)
Ctrl-^ o	Abort Output (AO)
Ctrl-^ t	Are You There? (AYT)
Ctrl-^ u	Erase Line (EL)

1The caret (^) symbol refers to Shift-6 on your keyboard.

router> ^^?
[Special telnet escape help]
^^B  sends telnet BREAK
^^C  sends telnet IP
^^H  sends telnet EC
^^O  sends telnet AO
^^T  sends telnet AYT
^^U  sends telnet EL 
 

• close

• disconnect

• exit

• logout

• quit

router> telnet host1 /encrypt kerberos
 

router> telnet host1 /route:kl.sri.com 10.1.0.11 host1

The following example connects to a host with logical name host1:

router> host1
 

router> telnet host2 /quiet
 

login:User2
Password:
         Welcome to OpenVMS VAX version V6.1 on node CRAW
     Last interactive login on Tuesday, 15-DEC-1998 11:01
     Last non-interactive login on Sunday,  3-JAN-1999 22:32
 
Server3)logout
    User2        logged out at  16-FEB-2000 09:38:27.85

telnet break-on-ip

To cause the system to generate a hardware BREAK signal on the EIA/TIA-232 line that is associated with a reverse Telnet connection when a Telnet Interrupt-Process command is received on that connection, use the telnet break-on-ip command in line configuration mode.

line 5
 location high-speed modem
 telnet transparent
 telnet break-on-ip

telnet refuse-negotiations

To set a line using Telnet to refuse to negotiate full-duplex, remote echo requests on incoming connections, use the telnet refuse-negotiations command in line configuration mode.

Syntax Description

This command has no arguments or keywords.

Defaults

No default behavior or values.

Command Modes

Line configuration

Command History

Release	Modification
10.0	This command was introduced.

Usage Guidelines

Use this command on reverse Telnet connections to allow the Cisco IOS software to refuse full-duplex, remote echo option connection requests from the other end. This command suppresses negotiation of the Telnet Remote Echo and Suppress Go Ahead options.

line 5
 telnet refuse-negotiations

telnet speed

To allow the Cisco IOS software to negotiate transmission speed of the line to a connected device, use the telnet speed command in line configuration mode.

Syntax Description

default-speed	Line speed (in bps) that the Cisco IOS software will use if the device on the other end of the connection has not specified a speed.
maximum-speed	Maximum speed (in bps) that the device on the port will use.

Defaults

No default behavior or values.

Command Modes

Line configuration

Command History

Release	Modification
10.0	This command was introduced.

Usage Guidelines

Negotiates speeds on reverse Telnet lines. You can match line speeds on remote systems in reverse Telnet, on host machines hooked up to a router used to access the network, or on a group of console lines hooked up to the router, when disparate line speeds are in use at the local and remote ends of the connection. Line speed negotiation adheres to the Remote Flow Control option, defined in RFC 1080.

Examples

The following example allows a router to negotiate a bit rate on the line using the Telnet option. If no speed is negotiated, the line will run at 2400 bits per second. If the remote host requests a speed of greater than 9600 bps, then 9600 will be used.

line 5
 telnet speed 2400 9600

Related Commands

Command	Description
connect	Logs in to a host that supports Telnet, rlogin, or LAT.
telnet	Logs in to a host that supports Telnet.
terminal telnet speed	Allows the access server to negotiate transmission speed for the current line and session.

telnet sync-on-break

To configure the Cisco IOS software to cause an incoming connection to send a Telnet Synchronize signal when it receives a Telnet BREAK signal, use the telnet sync-on-break command in line configuration mode.

line aux 0
 telnet sync-on-break

telnet transparent

To configure the Cisco IOS software to send a CARRIAGE RETURN (CR) as a CR followed by a NULL instead of a CR followed by a LINE FEED (LF), use the telnet transparent command in line configuration mode.

line 7
 telnet transparent

template

To access the template configuration mode for configuring a particular customer profile template, use the template command in global configuration mode. Use the no form of this command to delete the template of the specified name.

Syntax Description

name	A name that identifies the template.
default	Sets the command to its defaults.
exit	Exits from resource-manager configuration mode.
multilink	Configures multilink parameters.
no	Negates the command or its defaults.
peer	Accesses peer parameters for point-to-point interfaces.
ppp	Accesses Point-to-Point Protocol.

Defaults

No templates are configured.

Command Modes

Global configuration

Command History

Release	Modification
12.0(6)T	This command was introduced.

Usage Guidelines

All PPP and peer-default commands are enabled for a customer profile template under this grouping.

Examples

The following example shows the creation and configuration of a customer profile template named acme-direct and its subsequent assignment to the customer profile acme1:

template acme-direct
 multilink max-fragments 10
 peer match aaa-pools
 peer default ip address pool acme-numbers
 ppp ipcp dns 10.1.1.1  10.2.2.2 
 ppp multilink
 exit
resource-pool profile customer acme1
source template acme-direct

Related Commands

Command	Description
source template	Attaches a configured customer profile template to a customer profile.

terminal lat

To temporarily define the list of services to which you or another user can connect, use the terminal lat command in EXEC mode.

terminal lat out-group 4, 6-189

terminal transport preferred

To specify the preferred protocol to use for the current session when a command does not specify one, use the terminal transport preferred command in EXEC mode.

terminal transport preferred none

terminate-from

To specify the host name of the remote L2TP access concentrator (LAC) or L2TP network server (LNS) that will be required when accepting a Virtual Private Dialup Network (VPDN) tunnel, use the terminate-from command in VPDN group configuration mode. To remove the host name from the VPDN group, use the no form of this command.

Syntax Description

hostname hostname

(Optional) The host name that this VPDN group will accept connections from.

Defaults

Disabled

Command Modes

VPDN group configuration

Command History

Release	Modification
12.0(5)T	This command was introduced.

Usage Guidelines

Before you can use this command, you must have already enabled one of the two accept VPDN subgroups by using either the accept dialin or accept dialout command.

Each VPDN group can only terminate from a single host name. If you enter a second terminate-from command on a VPDN group, it will replace the first terminate-from command.

Examples

The following example configures a VPDN group to accept L2TP tunnels for dialout calls from the LNS cerise by using dialer 2 as its dialing resource:

vpdn-group 1
 accept dialout 
 protocol l2tp 
 dialer 2 
terminate-from hostname cerise

Related Commands

Command	Description
accept dialin	Specifies the LNS to use for authenticating, and the virtual template to use for cloning, new virtual access interfaces when an incoming L2TP tunnel connection is requested from a specific peer.
accept dialout	Accepts requests to tunnel L2TP dial-out calls and creates an accept-dialout VPDN subgroup

test modem back-to-back

To diagnose an integrated modem that may not be functioning properly, use the test modem back-to-back command in EXEC mode.

router# test modem back-to-back 2/0 2/1
back2back 2/0 2/1
Repetitions (of 10-byte packets) [1]: 
router#
%MODEM-5-B2BCONNECT: Modems (2/0) and (2/1) connected in back-to-back test: CONNECT9600/REL-MNPM
%MODEM-5-B2BMODEMS: Modems (2/0) and (2/1) completed back-to-back test: success/packets = 2/2

timer

To set the Redundant Link Manager (RLM) timer, use the timer command in RLM configuration mode. The associated options can overwrite the default setting of timeout values. Use the no form of this command to disable this function.

Syntax Description

force-down

After RLM enters the down state, RLM will stay in the down state for a certain amount of time to make sure that the remote end will also enter the down state. After this occurs, both can be forced to be in sync again. This timer can also prevent RLM links from going up and down rapidly in an unstable network environment.

keepalive

A keepalive packet will be sent out from Network Access Server (NAS) to CSC periodically.

minimum-up

After a link is recovered from the failure state and RLM is in the up state, RLM will wait for a minimum time to make sure the new recovered link is stabilized before doing any operation.

open-wait

To overcome the latency while opening several links at the same time, RLM will use this timer to wait before opening the new links, and then choose the link with the highest weighting to become the active signaling link.

recovery

When Network Access Server (NAS) loses the active connection to CSC, it will try to reestablish the connection within the interval specified by this command. If it fails to reestablish the connection, RLM will declare that the RLM signaling link is down.

retransmit

Because RLM is operating under UDP, it needs to retransmit the control packet if the packet is not acknowledged within this retransmit interval.

switch-link

The maximum transition period allows RLM to switch from a lower preference link to a higher preference link. If the switching link does not complete successfully before this timer expires, RLM will go into the recovery state.

Defaults

Disabled

Command Modes

RLM configuration

Command History

Release	Modification
11.3(7)	This command was introduced.

Related Commands

Command	Description
clear rlm group	Clears all RLM group time stamps to zero.
clear interface	Resets the hardware logic on an interface.
interface	Defines the IP addresses of the server, configures an interface type, and enters interface configuration mode.
link (RLM)	Specifies the link preference.
protocol rlm port	Reconfigures the port number for the basic RLM connection for the whole rlm-group.
retry keepalive	Allows consecutive keepalive failures a certain amount of time before the link is declared down.
server (RLM)	Defines the IP addresses of the server.
show rlm group statistics	Displays the network latency of the RLM group.
show rlm group status	Displays the status of the RLM group.
show rlm group timer	Displays the current RLM group timer values.
shutdown (RLM)	Shuts down all of the links under the RLM group.

tn3270

To begin a TN3270 session, use the tn3270 command in EXEC mode.

tn3270 finance

tn3270 8bit display

To configure the Cisco IOS software to use the mask set by the data-character-bits {7 | 8} command in line configuration mode or the terminal data-character bits {7 | 8} command in EXEC mode, use the tn3270 8bit display command in line configuration mode. Use the no form of this command to restore the default 7-bit mask used for TN3270 connections.

line 5
 tn3270 8bit display

tn3270 8bit transparent-mode

To configure the Cisco IOS software to use the mask set by the data-character-bits {7 | 8} command in line configuration mode or the terminal data-character bits {7 | 8} command in EXEC mode, use the tn3270 8bit transparent-mode command in line configuration mode. Use the no form of this command to restore the default 7-bit mask used for TN3270 connections.

line 5
 tn3270 8bit transparent-mode

tn3270 character-map

To convert incoming EBCDIC characters into ASCII characters, use the tn3270 character-map command in global configuration mode. Use the no form of this command to restore default character mappings.

Use this command to print international characters that are EBCDIC characters not normally printed, including umlauts (¨) and tildes (~). The command first restores default mapping for both EBCDIC and ASCII characters. In the no form of the command, the all keyword resets all character mappings to Cisco defaults.

Table 128 shows the default character mappings between ASCII and EBCDIC in decimal and hexadecimal format.

To convert outgoing ASCII characters into EBCDIC characters, use the keymap command to modify the keymap structure with the tag ebcdic_xx=string, where xx is a hexadecimal value and string is the sequence of characters that send the ESCDIC character.

Table 128: Default ASCII, EBCDIC Character Mappings

Character	ASCII Decimal	ASCII Hexadecimal	EBCDIC Decimal	EBCDIC Hexadecimal
!	33	0x21	90	0x5a
"	34	0x22	127	0x7f
#	35	0x23	123	0x7b
$	36	0x24	91	0x5b
%	37	0x25	108	0x6c
&	38	0x26	80	0x50
'	39	0x27	125	0x7d
(	40	0x28	77	0x4d
)	41	0x29	93	0x5d
*	42	0x2a	92	0x5c
+	43	0x2b	78	0x4e
,	44	0x2c	107	0x6b
-	45	0x2d	96	0x60
.	46	0x2e	75	0x4b
/	47	0x2f	97	0x61
0	48	0x30	240	0xf0
1	49	0x31	241	0xf1
2	50	0x32	242	0xf2
3	51	0x33	243	0xf3
4	52	0x34	244	0xf4
5	53	0x35	245	0xf5
6	54	0x36	246	0xf6
7	55	0x37	247	0xf7
8	56	0x38	248	0xf8
9	57	0x39	249	0xf9
:	58	0x3a	122	0x7a
;	59	0x3b	94	0x5e
<	60	0x3c	76	0x4c
=	61	0x3d	126	0x7e
>	62	0x3e	110	0x6e
?	63	0x3f	111	0x6f
@	64	0x40	124	0x7c
A	65	0x41	193	0xc1
B	66	0x42	194	0xc2
C	67	0x43	195	0xc3
D	68	0x44	196	0xc4
E	69	0x45	197	0xc5
F	70	0x46	198	0xc6
G	71	0x47	199	0xc7
H	72	0x48	200	0xc8
I	73	0x49	201	0xc9
J	74	0x4a	209	0xd1
K	75	0x4b	210	0xd2
L	76	0x4c	211	0xd3
M	77	0x4d	212	0xd4
N	78	0x4e	213	0xd5
O	79	0x4f	214	0xd6
P	80	0x50	215	0xd7
Q	81	0x51	216	0xd8
R	82	0x52	217	0xd9
S	83	0x53	226	0xe2
T	84	0x54	227	0xe3
U	85	0x55	228	0xe4
V	86	0x56	229	0xe5
W	87	0x57	230	0xe6
X	88	0x58	231	0xe7
Y	89	0x59	232	0xe8
Z	90	0x5a	233	0xe9
[	91	0x5b	173	0xad
\	92	0x5c	224	0xe0
]	93	0x5d	189	0xbd
^	94	0x5e	95	0x5f
_	95	0x5f	109	0x6d
\Q	96	0x60	121	0x79
a	97	0x61	129	0x81
b	98	0x62	130	0x82
c	99	0x63	131	0x83
d	100	0x64	132	0x84
e	101	0x65	133	0x85
f	102	0x66	134	0x86
g	103	0x67	135	0x87
h	104	0x68	136	0x88
i	105	0x69	137	0x89
j	106	0x6a	145	0x91
k	107	0x6b	146	0x92
l	108	0x6c	147	0x93
m	109	0x6d	148	0x94
n	110	0x6e	149	0x95
o	111	0x6f	150	0x96
p	112	0x70	151	0x97
q	113	0x71	152	0x98
r	114	0x72	153	0x99
s	115	0x73	162	0xa2
t	116	0x74	163	0xa3
u	117	0x75	164	0xa4
v	118	0x76	165	0xa5
w	119	0x77	166	0xa6
x	120	0x78	167	0xa7
y	121	0x79	168	0xa8
z	122	0x7a	169	0xa9
{	123	0x7b	192	0xc0
|	124	0x7c	79	0x4f
}	125	0x7d	208	0xd0
~	126	0x7e	161	0xa1

tn3270 character-map 0x81 0x78

tn3270 datastream

To enable the TN3270 extended datastream, use the tn3270 datastream command in global configuration mode. Use the no form of this command to return to the normal TN3270 datastream.

# tn3270 datastream ?
  extended  Use extended TN3270 datastream
  normal    Use normal TN3270 datastream

tn3270 null-processing

To specify how NULLs are handled ,use the tn3270 null-processing command in global configuration mode. Use the no form of the command to return to 7171 NULL processing.

Syntax Description

3270	(Optional) NULLs are compressed out of the string, as on a 3278-x terminal.
7171	(Optional) NULLs are converted to spaces, as on a 7171 controller.

Defaults

7171 NULL processing

Command Modes

Global configuration

Command History

Release	Modification
10.3	This command was introduced.

Usage Guidelines

If a user enters data, uses an arrow key to move the cursor to the right on the screen, and then enters more data, the intervening spaces are filled with NULLs. To specify how NULLs are handled, enter the tn3270 null-processing command either with the 3270 argument, where NULLs are compressed out of the string (as on a real 3278-x terminal) or the argument 7171, where NULLs are converted to spaces as on a 7171 controller. Enter this command in global configuration.

Examples

This example shows the two available null processing methods:

tn3270 null-processing ?
 3270  Use 3270-style null processing
 7171  Use 7171-style null processing

tn3270 optimize-cursor-move

To increase performance between a remote user and a TN3270 host by limiting cursor movement information that is sent to user terminals, issue the tn3270 optimize-cursor-move command in global configuration mode. Use the no form of the command to ensure that all cursor movement information is sent between the user's terminal and the TN3270 host.

Syntax Description

This command has no arguments or keywords.

Defaults

Cursor movement escape strings are sent to the terminal.

Command Modes

Global configuration

Command History

Release	Modification
11.2	This command was introduced.

Usage Guidelines

Issuing this command increases the speed of information transfer between users and TN3270 hosts through an access server.

If you do not issue this command, virtually every byte of information between the user's terminal and the TN3270 host is prepended and trailed by cursor-movement strings.

Examples

The following example disables status messages to users who are connected to 3278 terminals:

tn3270 optimize-cursor-move 

Related Commands

Command	Description
tn3270 status-message	Reenables the display of status messages after they have been disabled.

tn3270 reset-required

To lock a terminal after input error until the user resets the terminal, use the tn3270 reset-required command in global configuration mode. Use the no form of the command to return to the default of no reset required.

Syntax Description

This command has no arguments or keywords.

Defaults

No reset is required

Command Modes

Global configuration

Command History

Release	Modification
10.3	This command was introduced.

Usage Guidelines

On a 3278-x terminal, the keyboard is locked and further input is not permitted after input error (due to field overflow, invalid entry, and so on), until the user presses the RESET key. Most TN3270 implementations leave the keyboard unlocked and remove any error message on the next key input after the error. Use this command to lock the keyboard until the user performs a reset.

tn3270 status-message

To reenable the display of status messages after they have been disabled, use the tn3270 status-message command in global configuration mode. Use the no form of this command to save bandwidth on asynchronous lines by not displaying status messages.

Syntax Description

This command has no arguments or keywords.

Defaults

Status messages appear.

Command Modes

Global configuration

Command History

Release	Modification
11.2	This command was introduced.

Usage Guidelines

Status messages appear on the user's console by default. These messages include "System Locked," "Field error," and "System UnLocked" messages, among others. These messages are sent back to the user's terminal via the TTY line on the access server.

Disabling status messages saves bandwidth on asynchronous lines, which have very low bandwidth.

Examples

The following example disables status messages to users who are connected to 3270 terminals:

no tn3270 status-message

Related Commands

Command	Description
tn3270 optimize-cursor-move	Increases performance between a remote user and a TN3270 host by limiting cursor movement information that is sent to user terminals.

tn3270 typeahead

To buffer keyboard data when a 3278 server is in locked mode, use the tn3270 typeahead command in global configuration mode. Use the no form of this command to disable the typeahead function.

Syntax Description

This command has no arguments or keywords.

Defaults

No typeahead

Command Modes

Global configuration

Command History

Release	Modification
11.2	This command was introduced.

Usage Guidelines

When typeahead is enabled, the TN3270 client implementation in the Cisco IOS software permits you (the user) to continue typing while the system is trying to obtain a response from the TN3270 server. Information you type while a "System Locked" message appears on the terminal is stored in a buffer. After the "System Locked" message disappears, the information is then used as though it were just typed.

Examples

The following example saves user information when "System Locked" messages appear on the screen:

tn3270 typeahead

Related Commands

Command	Description
tn3270 reset-required	Locks a terminal after input error until the user resets the terminal.

Posted: Mon May 8 17:47:05 PDT 2000
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