|
|
A profile is a set of configuration parameters associated with ports on the router or WAN devices.
This appendix contains the following sections:
There are two modes at which you can set parameters, the system mode and the system mode. System mode parameters affect the configuration on a global level. Profiles are individual parameters, maintained in configuration sets. Profile mode parameters affect how the router handles the connection to a device.
You do not have to reconfigure the router every time you connect to a different device. Instead of using one set of configuration parameters for all devices, you can use different profiles to communicate with a variety of devices.
For example, you can create a user-defined profile called 2500 that contains the parameters to be used when communicating with a Cisco 2500 series router over the WAN. You can customize your Cisco 700 series router to maintain up to 17 user-defined profiles. Profiles are saved in Cisco 700 series router's nonvolatile random access memory (NVRAM).
In addition to user-defined profiles, there are three permanent profiles, Internal, LAN and Standard. The Internal profile stores parameters used to communicate between the LAN and WAN ports on the Cisco 700 series router. The LAN profile stores parameters that configure the LAN port on the router. The Standard profile is the default profile. If authentication is not required and the destination device you are connecting to does not have a user-defined profile, the router uses the Standard profile.
Profiles are either active or inactive. An active profile creates a virtual connection to the remote device associated with the profile. A virtual connection is a connection without physical channels. After creating a virtual connection, an on-demand call can be made to the associated remote device to establish a physical connection.
A physical connection is a dynamically created pipeline of packets from the Cisco 700 series router to a switch on the WAN. All connections are associated with the profile that defines the configuration of the connection.
Virtual and physical connections behave similarly; the difference is that physical connections forward packets to the WAN. Virtual connections monitor packet traffic on the LAN until a demand filter "sees" that a packet is destined for the WAN and initiates a call to the switch, opening the physical connection. Once the call is established, the virtual connection becomes an active physical connection, and the packets move through the pipeline.
The system is composed of both system mode parameters, user-defined profiles, and permanent profiles. System mode parameters can be changed only in system mode. The prompt indicates you are in system mode by displaying nothing or the router name. An example of the prompt is shown below:
Router_name>
If you are in profile mode, the profile name appears on the prompt, separated from the system name by a colon (:). An example of the prompt is shown below:
Router_name:Profile>
All profiles are based on the profile template and inherit the system-level values. When you create a new profile, its default values are taken from the profile template.
System mode parameters affect the router as a system. Table B-1 lists the system parameters.
| Caller ID parameters | Call waiting | PPP1 parameters |
| Date and time | Country group | Screen length |
| Directory number | Address age time | Screen echo |
| Delay time | Local and remote access | SNMP2 parameters |
| Forwarding mode | Phone 1 and 2 | SPIDs3 |
| Multidestination dialing | PPP client password | Switch type |
| Numbering plan | PPP client secret | System password |
| Patterns | Voice priority | Power Source 1 detect |
| Passthru | System name |
Changes made to profile mode parameters in system mode affect the profile template. When a profile is created, it inherits the matching system mode parameters from the profile template. Any changes to profile parameters while in profile mode apply only to that profile. Changes made to profile parameters in system mode are stored in the profile template. When you use the set profile command to create a user-defined profile, the default parameters for the new profile are taken from system mode.
Table B-2 lists the parameters that can be configured in a profile.
| Bridging | Line speed | PPP authentication (outgoing) |
| Ringback number | Auto calling | All IP parameters, including filters |
| Compression | Demand | PAP password (client and host) |
| Passthrough | Timeout | All IPX parameters, including filters |
| Learning | Called number | CHAP secret (client and host) |
| Subnet mask | Encapsulation | Bridge filters (address, type, and user-defined) |
| Protocol | Loopback |
Cisco 700 series routers contain three permanent profiles. Permanent profiles can be modified, but they cannot be deleted. The permanent profiles are as follows:
The decision to use the LAN or Internal profile involves some knowledge of your network design and whether you are bridging or routing to remote sites (or a combination of both). It is best to use the LAN profile instead of the Internal profile to simplify the configuration. You can easily associate the LAN profile with the Ethernet interface and the user-defined profiles with the ISDN interface.
Sometimes situations arise (very infrequent) where you must route a protocol to one site and bridge the SAME protocol to another site. Simply leave the LAN profile as a bridging profile and use the Internal profile for all routed protocol information.
A new profile is created with the set user command. When you create a new profile, you automatically enter profile mode for that profile. The following example creates a user profile called tomd. Enter the set user command to create a profile using the profile template for the default values of the parameters, as follows:
Host>set user tomd Host:tomd>
Notice that the profile mode is indicated by the prompt, which appears as the system name and the profile name, separated by a colon. While this prompt is displayed, modifications to the parameters only affect the parameters in the profile. The changes do not affect system mode parameters or other profiles.
The cd command allows you to change to the system mode or to another profile. Following is an example of the cd command used to change to a permanent profile called LAN:
Router_name> cd LAN Router_name:LAN>
Note that the prompt includes the name of the profile. You can now modify the LAN profile parameters.
The show commands display the values associated with a profile parameter while in profile mode. The commands work in system mode to show the values associated with parameters in the profile template.
In profile mode, some show commands only display profile parameters. Parameter values that have been redefined in profile mode are indicated with a <*>. All other parameter values are inherited from the profile template.
You can remove any parameter value within a profile with the unset command. The parameter you removed inherits its value from the system mode.
In the following example, the profile parameter number is removed from the profile using the unset command:
unset number
The reset user command deletes a user-defined profile from the router. The three permanent profiles (LAN, Internal and Standard) cannot be deleted. This command also closes any connection associated with the profile.
In the following example, the tomd profile is removed from the system using the reset user command:
reset user tomd
The set profile user command changes the name of an existing profile. Enter this command while in profile mode for the profile you want to affect. In the following example, the profile name is being changed from 2500 to 4500:
766:2500> set profile user 4500
766:4500>
When the router receives an incoming call, the router searches both active and inactive profiles for a profile with the same name as the calling device. If it finds a profile with the matching user ID, the router uses the configuration parameters of that profile while communicating with the remote device. If the profile is inactive, it is automatically activated for the duration of the connection.
When the call is finished, the physical link between the two devices is disconnected. However, the virtual connection to the remote router might be configured to remain active.
If the profile is configured to remain active after a link disconnects, a virtual connection remains. The virtual connection monitors the LAN traffic. If packets destined for the WAN are detected, the router opens up the physical connection and forwards the packets.
If the profile is configured to become inactive after a link disconnects, both the physical link and the virtual connection to the remote router are disconnected until another call is received from the same remote router.
Outgoing calls require that the associated user-defined profiles be set to active, the set auto command must be on and there must be a phone number to call stored in the profile. If the profile is inactive, a number to dial is not available to the router.
|
|