| There are two modes in which you can
set parameters: the system mode and the profile mode. System-mode
parameters affect the configuration on a global level. Profiles are
individual parameters that are maintained in configuration sets.
Profile-mode parameters affect the way the router handles the
connection to a device.
You do not have to reconfigure the
router every time that 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, which 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 the Cisco 700
series router nonvolatile RAM (NVRAM).
A profile is a set of configurations,
customized for and associated with a specific remote device. After
being defined by the user, profiles are saved and stored in a Cisco
700 series router NVRAM, which is the memory used to store the
router configurations. When the router is turned on, the profiles
are loaded. In addition to user-defined profiles, the Cisco 700
series router has three permanent profiles, as shown in Figure .
The following profiles can be modified, but not deleted:
- LAN - This profile determines
how data is passed from the router to the LAN. It is used for
routing and with the Ethernet connection.
- Internal - This profile
determines how data is passed between the bridge engine and the
IP/IPX router engine. Used when routing is enabled on LAN or
USER profiles, it stores the parameters used to communicate
between the LAN and WAN ports on the Cisco 700 series router.
- Standard - This profile is
used for incoming ISDN connections that do not have a profile.
If authentication is not required and the destination device
that you are connecting to does not have a user-defined profile,
the router uses the standard profile.
The standard profile does not support
routing, as shown in Figure .
This profile should be used to provide the appropriate configuration
and security measures for unknown callers. Traffic flows from
profile to profile through engines-a routing engine or a bridging
engine.
Profiles enable users to create
customized sets of configuration parameters, such as filters, demand
thresholds, and passwords for each remote site that is dialed.
Profiles allow on-demand calls to be made to different telephone
numbers, based on demand filters that are tailored for each remote
site. Up to 20 profiles (16 user, LAN, standard, system, and
internal) can be configured on Cisco 700 series routers.
System parameters are independent of
profiles; they affect the router as a system. System parameters can
be changed only at the system-level prompt, shown as follows:
Router_name>
As an example of profiles, the Figure
shows three possible connections for the WAN side of the router: two
connections are to and from a known caller, and one connection is
from an unknown caller.
Profile template characteristics are
as follows:
- The profile template consists of
all the profile parameters, as seen at the system level. All
profiles are based on the profile template by inheriting these
values. The profile template is modified by configuring the
profile parameters at the system level.
- Any profile that has a specific
profile parameter redefined within the profile is not affected
by a change to the profile template configuration.
- After you configure the profile
template, you can customize individual profiles by entering
profile mode for that specific profile and redefining the
profile parameters.
- Profiles are either active or
inactive:
- An active profile immediately
creates a virtual connection to a remote device associated with
that profile. After a virtual connection is created, a demand
call can be made to the remote device associated with that
profile.
- Inactive profiles have no
connection associated with them. No demand calls can be made
with a profile that is configured as inactive.
- Activity status is configured with
the set profile command. To display these settings for an
individual profile, use the show profile command while in
profile mode for the profile.
Profile guidelines are as follows:
- LAN and internal profiles provide the same basic function.
- Any protocol routed in the LAN profile must be routed in the user
profile in order to allow that protocol to be forwarded.
- Any protocol routed in the internal profile may be routed or
bridged in the user profile.
- If IP routing is enabled for the internal profile, the router is a pingable device.
- For IP to be bridged, the internal profile must be enabled
instead of IP routing.
Profile parameters are parameters that can be configured on a
per-profile basis, and therefore apply only to the connection with
the remote router. After creating a new profile, these parameters
can be reconfigured within that profile. Any configuration changes
to profile parameters while in profile mode apply only to that
profile. The following are some common user profile parameters set
on a Cisco 700 series router:
- Demand parameters
- Called number
- Subnet mask
- PPP authentication
- Default gateway
- Passwords
- CHAP host secret
- PAP host password
- IP parameters
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