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This chapter explains the function and syntax of the Cisco IOS dial services commands from A through B. For more information about defaults and usage guidelines, see the corresponding chapter of the Cisco IOS Dial Services Command Reference, Release 12.1.
To download static route configuration information from the authorization, authentication, and accounting (AAA) server using TACACS+ or RADIUS, use the aaa authorization configuration default command in global configuration mode. To remove static route configuration information, use the no form of this command.
aaa authorization configuration default {radius | tacacs+}
Syntax Description
radius Use RADIUS for static route download. tacacs+ Use TACACS+ for static route download.
To associate a authorization, authentication, and accounting (AAA) server group with an interface or customer profile, enter the aaa group-configuration interface or customer profile subcommand. To disable the configuration, enter the no form of this command.
aaa group-configuration aaa-group-name
Syntax Description
aaa-group-name Character string used to name the group of AAA servers.
To enable the download static route feature and set the amount of time between downloads, use the aaa route download command in global configuration mode. To disable this function, use the no form of the command.
aaa route download [time]
Syntax Description
time (Optional) Time between downloads, in minutes. The range is 1 to 1440 minutes.
To set the interval for closing the connection, use the absolute-timeout command in line configuration mode. To restore the default, use the no form of this command.
absolute-timeout minutes
Syntax Description
minutes The number of minutes after which the user's session will be terminated.
To configure L2TP Network Servers (LNSs) to accept tunneled PPP connections from an L2TP Access Concentrator (LAC) and create an accept-dialin Virtual Private Dialup Network (VPDN) subgroup, use the accept dialin command in VPDN group configuration mode. To remove the accept-dialin subgroup from a VPDN group, use the no form of this command.
accept dialinSyntax Description
This command has no arguments or keywords.
To accept requests to tunnel Layer 2 Tunneling Protocol (L2TP) dial-out calls and create an accept-dialout VPDN subgroup, use the accept dialout command in VPDN group configuration mode. To remove the accept-dialout subgroup from the VPDN group, use the no form of this command.
accept dialoutSyntax Description
This command has no arguments or keywords.
To define restrictions on incoming and outgoing connections, use the access-class command in line configuration mode. To remove the access list number, use the no form of this command.
access-class access-list-number {in | out}
Syntax Description
access-list-number Specifies an integer between 1 and 199 that defines the access list. in Controls which nodes can make local-area transport (LAT) connections into the server. out Defines the access checks made on outgoing connections. (A user who types a node name at the system prompt to initiate a LAT connection is making an outgoing connection.)
To enable an AppleTalk Remote Access (ARA) client to request a callback, use the arap callback command in global configuration mode. To disable callback requests, use the no form of this command.
arap callbackSyntax Description
This command has no arguments or keywords.
To configure a line to be used only as an AppleTalk Remote Access (ARA) connection, use the arap dedicated command in line configuration mode. To return the line to interactive mode, use the no form of the command.
arap dedicatedSyntax Description
This command has no arguments or keywords.
To enable AppleTalk Remote Access (ARA) for a line, use the arap enable command in line configuration mode. Use the no form of this command to disable ARA.
arap enableSyntax Description
This command has no arguments or keywords.
To control Macintosh access to networks, use the arap net-access-list command in line configuration mode. Use the no form of this command to return to the default setting.
arap net-access-list net-access-list-number
Syntax Description
net-access-list-number One of the list values configured using the AppleTalk access-list cable-range, access-list includes, access-list network, access-list other-access, and access-list within commands.
To create a new network/zone and cause it to be advertised, use the arap network command in global configuration mode. Use the no form of this command to prevent a new network/zone from being advertised.
arap network [network-number] [zone-name]
Syntax Description
network-number (Optional) AppleTalk network number. The network number must be unique on your AppleTalk network. This network is where all ARAP users appear when they dial in to the network. zone-name (Optional) AppleTalk zone name.
To prevent Macintosh guests from logging in to the router, use the arap noguest command in line configuration mode. Use the no form of this command to remove this restriction.
arap noguest [if-needed]
Syntax Description
if-needed (Optional) Does not authenticate if the user already provided authentication. This allows users to log in as guests if they have already been authenticated through a username or password.
To require users to enter their password manually at the time they log in, use the arap require-manual-password command in line configuration mode. Use the no form of this command to disable the manual password-entry requirement.
arap require-manual-passwordSyntax Description
This command has no arguments or keywords.
To set the maximum length of an AppleTalk Remote Access (ARA) session for a line, use the arap timelimit command in line configuration mode. Use the no form of this command to return to the default of unlimited session length.
arap timelimit [minutes]
Syntax Description
minutes (Optional) Maximum length of time (in minutes) for a session.
To set when a disconnect warning message is displayed, use the arap warningtime command in line configuration mode. Use the no form of this command to disable this function.
arap warningtime [minutes]
Syntax Description
minutes (Optional) Amount of time, in minutes, before the configured session time limit. At the configured amount of time before a session is to be disconnected, the router sends a message to the Macintosh client, which causes a warning message to appear on the user's screen.
To control what zones the Macintosh client sees, use the arap zonelist command in line configuration mode. Use the no form of this command to disable the default setting.
arap zonelist zone-access-list-number
Syntax Description
zone-access-list-number One of the list values configured using the AppleTalk access-list zone or access-list additional-zones commands.
The peer default ip address command replaces the async default ip address command.
See the description of the peer default ip address command in this book for more information.
To enable the router to pass routing updates to other routers over the AUX port configured as an asynchronous interface, use the async default routing command in interface configuration mode. Use the no form of this command to disable dynamic addressing.
async default routingSyntax Description
This command has no arguments or keywords.
To specify dynamic asynchronous addressing, use the async dynamic address command in interface configuration mode. Use the no form of this command to disable dynamic addressing.
async dynamic addressSyntax Description
This command has no arguments or keywords.
To enable manually configured routing on an asynchronous interface, use the async dynamic routing command in interface configuration mode. Use the no form of this command to disable routing protocols; static routing is still used.
async dynamic routingSyntax Description
This command has no arguments or keywords.
To place a line into dedicated asynchronous mode using Serial Line Internet Protocol (SLIP) or PPP encapsulation, use the async mode dedicated command in interface configuration mode. Use the no form of this command to return the line to interactive mode.
async mode dedicatedSyntax Description
This command has no arguments or keywords.
To return a line that has been placed into dedicated asynchronous network mode to interactive mode, thereby enabling the slip and ppp EXEC commands, use the async mode interactive command in interface configuration mode. Use the no form of this command to prevent users from implementing Serial Line Internet Protocol (SLIP) and PPP at the EXEC level.
async mode interactiveSyntax Description
This command has no arguments or keywords.
To specify that Virtual Private Dialup Network (VPDN) send the entire structured username to the authentication, authorization, and accounting (AAA) server the first time the router contacts the AAA server, use the authen before-forward command in VPDN group configuration mode. Use the no form of this command to send just the domain name or Dialed Number identification Service (DNIS).
authen before-forwardSyntax Description
This command has no arguments or keywords.
To configure the Cisco IOS software to automatically execute a command when a user connects to a particular line, use the autocommand command in line configuration mode. Use the no form of this command to disable the automatic execution.
autocommand command
Syntax Description
command Any appropriate EXEC command, including the host name and any switches that occur with the EXEC command.
Syntax Description
lapb-ta Automatically detects Link Access Procedure, Balanced (LAPB) for an ISDN terminal adapter. ppp Automatically detects PPP encapsulation on the interface. v120 Automatically detects V.120 encapsulation on B channels.
To configure automatic line disconnect, use the autohangup command in line configuration mode. This command causes the EXEC to issue the exit command when the last connection closes. Use the no form of this command to disable automatic line disconnect.
autohangupSyntax Description
This command has no arguments or keywords.
To configure a line to start an Appletalk Remote Access (ARA), PPP, or Serial Line Internet Protocol (SLIP) session, use the autoselect command in line configuration mode. Use the no form of this command to disable this function on a line.
autoselect {arap | ppp | slip | during-login}
Syntax Description
arap Configures the Cisco IOS software to allow an ARA session to start up automatically. ppp Configures the Cisco IOS software to allow a PPP session to start up automatically. slip Configures the Cisco IOS software to allow a SLIP session to start up automatically. during-login The username and/or password prompt is displayed without pressing the Return key. After the user logs in, the autoselect function begins.
To configure an IP backup endpoint address, enter the backup command in VPDN group configuration mode. To remove this function, enter the no form of this command.
backup ip ip-address [limit number [priority number]]
Syntax Description
ip ip-address IP address of the HGW/LNS at the other end of the tunnel. This is the IP endpoint at the end of the tunnel, which is an HGW/LNS router. limit number (Optional) Limits sessions per backup. The limit can range from 0 to 32767. The default is no limit set. priority number (Optional) Priority level. Loadsharing is priority 1. Backup priority is between 2 and 32,767. The highest priority is 2, which is the first home gateway router to receive backup traffic. The lowest priority is 32,767. The priority group is used to support multiple levels of loadsharing and backup. The default is the lowest priority.
To define how much time should elapse before a secondary line status changes after a primary line status has changed, use the backup delay command in interface configuration mode. Use the no form of this command to return to the default, so that as soon as the primary fails, the secondary is immediately brought up without delay.
backup delay {enable-delay | never} {disable-delay | never}
Syntax Description
enable-delay Number of seconds that elapse after the primary line goes down before the Cisco IOS software activates the secondary line. disable-delay Number of seconds that elapse after the primary line comes up before the Cisco IOS software deactivates the secondary line. never Prevents the secondary line from being activated or deactivated.
To configure an interface as a secondary or dial backup, use the backup interface command in interface configuration mode. Use the no form of this command to disable this feature.
backup interface type number Cisco 7200 series and Cisco 7500 series routers
backup interface slot/port-adapter/port
no backup interface slot/port-adapter/port
Syntax Description
type number Interface type and port number to use as the backup interface. slot/port-adapter/port Backplane slot number and port number on the interface. See your hardware installation manual for the specific slot and port numbers.
To configure a dialer interface as a secondary or dial backup, use the backup interface dialer command in interface configuration mode. Use the no form of this command to disable this feature.
backup interface dialer number
Syntax Description
number Dialer interface number to use as the backup interface.
To set a traffic load threshold for dial backup service, use the backup load command in interface configuration mode. Use the no form of this command to return to the default value.
backup load {enable-threshold | never} {disable-load | never}
Syntax Description
enable-threshold Percentage of the primary line's available bandwidth that the traffic load must exceed to enable dial backup. disable-load Percentage of the primary line's available bandwidth that the traffic load must be less than to disable dial backup. never Sets the secondary line never to be activated due to traffic load.
To create a "host failed" message that displays when a connection fails, use the busy-message command in global configuration mode. Use the no form of this command to disable the "host failed" message from displaying on the specified host.
busy-message hostname d message d
Syntax Description
hostname Name of the host that cannot be reached. d Delimiting character of your choice---a pound sign (#), for example. You cannot use the delimiting character in the message. message Message text.
To inform the central-office switch that a channel is out-of-service, use the busyout command in privileged EXEC mode. This command does not terminate an existing call; instead, after you hang up or end a call, a new call cannot be established on a channel that has received a busyout command instruction.
To busyout an entire card on the dial shelf and remove it from dial services, use the busyout privileged EXEC command. To cancel busyout, use the no form of the command.
busyout shelf/slot/port
Syntax Description
shelf/slot/port Shelf number, slot number, and port number. You must type in the forward slashes (/).
Posted: Wed Jul 26 11:35:33 PDT 2000
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