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Cisco IOS Release 12.0 Dial Solutions Command Reference
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About This Manual
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Using Cisco IOS Software
- Part 1: Dial-In Port Setup
- Part 2: Dial-In Terminal Service & Remote Node Config
- Part 3: Dial-on-Demand Routing
- Part 4: Dial Backup
- Part 5: NASI Client Commands
- Part 6: Large-Scale Dial Solutions
- Part 7: Cost-Control Solutions
- Part 8: Virtual Private Dialup Networks
- Part 9: Other Network Traffic on ISDN Channels
- Part 10: Dial-Related Addressing Services
- Part 11: Appendixes
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Index
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Table Of Contents
Virtual Template Interface Commands
clear interface virtual-access
show interfaces virtual-access
show ip interface virtual-access
Virtual Template Interface Commands
The Virtual Template Interface Service feature provides a generic service that can be used to apply predefined configurations (virtual template interfaces) in dynamically creating and freeing virtual access interfaces as needed.
This feature is supported on all platforms that support Multilink PPP.
For virtual template interface configuration tasks and examples, refer to the "Configuring Virtual Template Interfaces" chapter in the Dial Solutions Configuration Guide.
clear interface virtual-access
To tear down the virtual access interface and free the memory for other dial-in uses, use the clear interface virtual-access EXEC command.
clear interface virtual-access number
Syntax Description
Command Mode
EXEC
Usage Guidelines
This command first appeared in Cisco IOS Release 11.2 F.
This command does not free the memory for uses unrelated to dial-in access.
Example
The following example clears a specified virtual access interface. You can use the show interfaces virtual-access command to display the interface numbers before you clear any specific one.
clear interface virtual access 1Related Commands
You can use the master indexes or search online to find documentation of related commands.
interface virtual-template
interface virtual-template
To create a virtual template interface that can be configured and applied dynamically in creating virtual access interfaces, use the interface virtual-template global configuration command.
interface virtual-template number
Syntax Description
Default
Disabled. No virtual template number is defined.
Command Mode
Global configuration
Usage Guidelines
This command first appeared in Cisco IOS Release 11.2 F.
A virtual template interface is used to provide the configuration for dynamically created virtual access interfaces. It is created by users and can be saved in nonvolatile RAM (NVRAM).
Once the virtual template interface is created, it can be configured in the same way as a serial interface.
Virtual template interfaces can be created and applied by various applications such as Virtual Profiles, virtual private dialup networks (VPDN), PPP over ATM, protocol translation, and Multichassis Multilink PPP (MMP).
Example
The following example creates and configures virtual template interface 1:
interface virtual-template 1ip unnumbered ethernet 0ppp multilinkppp authentication chapshow interfaces virtual-access
To display status, traffic data, and configuration information about a specified virtual access interface, use the show interfaces virtual-access EXEC command.
show interfaces virtual-access number [configuration]
Syntax Description
number
Number of the virtual access interface.
configuration
(Optional) Restricts output to configuration information.
Command Mode
EXEC
Usage Guidelines
This command first appeared in Cisco IOS Release 11.2 F.
Sample Display
The following is sample output of the show interfaces virtual-access EXEC command.
Router# show interfaces virtual-access 1Virtual-Access1 is up, line protocol is upHardware is Virtual Access interfaceInterface is unnumbered. Using address of Ethernet0 (172.21.114.132)MTU 1500 bytes, BW 64 Kbit, DLY 100000 usec, rely 255/255, load 1/255Encapsulation PPP, loopback not set, keepalive set (10 sec)DTR is pulsed for 5 seconds on resetLCP Open, multilink ClosedOpen: IPCP, CDPLast input 5d04h, output never, output hang neverLast clearing of "show interface" counters 00:06:42Queueing strategy: fifoOutput queue 0/40, 0 drops; input queue 0/75, 0 drops5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec76 packets input, 3658 bytes, 0 no bufferReceived 0 broadcasts, 0 runts, 0 giants0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort141 packets output, 2909 bytes, 0 underruns0 output errors, 0 collisions, 0 interface resets0 output buffer failures, 0 output buffers swapped out0 carrier transitionsdescribes the fields in this output that are most significant to virtual access interfaces.
show ip interface virtual-access
To display network layer IP information about a specified virtual access interface, use the show ip interface virtual-access EXEC command.
show ip interface virtual-access number
Syntax Description
Command Mode
EXEC
Usage Guidelines
This command first appeared in Cisco IOS Release 11.2 F.
Sample Display
The following is output from the show ip interface virtual-access command. This virtual access interface has been configured with a virtual template interface that applies the ip unnumbered ethernet 0 command.
Router# show ip interface virtual-access 1Virtual-Access1 is up, line protocol is upInterface is unnumbered. Using address of Ethernet0 (172.21.114.132)Broadcast address is 255.255.255.255Peer address is 20.0.0.1MTU is 1500 bytesHelper address is not setDirected broadcast forwarding is enabledOutgoing access list is not setInbound access list is Virtual-Access1#0Proxy ARP is enabledSecurity level is defaultSplit horizon is enabledICMP redirects are always sentICMP unreachables are always sentICMP mask replies are never sentIP fast switching is disableddescribes only the output fields that are significant to virtual access interfaces and not described in other IP commands.