Creating a Profile

You can configure an IP interface dynamically by creating a profile. A profile is a set of characteristics that acts as a pattern that can be dynamically assigned to an IP interface. You can manage a large number of IP interfaces efficiently by creating a profile with a specific set of characteristics. In addition, you can create a profile to assign an IP interface to a virtual router.

A profile can contain one or more of the following characteristics:

• access-route - Enables the creation of host access routes on an interface
• address - Configures an IP address on an interface
• directed-broadcast - Enables directed broadcast forwarding
• mtu - Configures the mtu for a network
• redirects - Enables transmission of ICMP redirect messages
• unnumbered - Configures IP on this interface without a specific address
• virtual-router - Specifies a virtual router to which interfaces created by this profile will be attached

Use the profile command from Global Configuration mode to create or edit a profile. See ERX Physical and Link Layers Configuration Guide, Chapter 21, Configuring Dynamic Interfaces for information on creating profiles and on other characteristics that can be applied to the profile.

host1(config)#profile acton

host1(config-profile)#ip virtual-router warf

host1(config-profile)#ip unnumbered atm 3/0

    ip access-routes

• Use to enable an access route in a profile.
• Example

host1(config)#profile foo

host1(config-profile)#ip access-routes

• Use the no version to remove the access route.

    ip address

• Use to assign an IP address to a profile.
• You must first specify the layer 2 encapsulation before you can set the IP address for serial interfaces.
• Use the no version to remove the IP address assigned to the profile.

    ip directed-broadcast

• Use to enable a directed broadcast address in a profile.
• Use the no version to remove the directed broadcast address from the profile.

    ip mtu

• Use to assign the MTU size sent on an IP interface.
• Use the no version to remove the assignment from the profile.

    ip redirects

• Use to enable the sending of redirect messages if the software is forced to resend a packet through the same interface on which it was received.
• Use the no version to remove the assignment from the profile.

    ip unnumbered

• Use to specify the numbered interface with which dynamic unnumbered interfaces created with the profile are associated.
• You can specify an unnumbered interface using RADIUS instead of using the ip unnumbered command in a profile.
• Example

host1(config-profile)#ip unnumbered fastEthernet 0/0

• Use the no version to remove the assignment from the profile.

    ip virtual-router

• Use to assign a virtual router to a profile.
• You can configure a virtual router using RADIUS instead of adding one to the profile by using the ip virtual-router command.
• Use the no version to remove the virtual router assignment.

    profile

• Use to create a profile.
• You specify a profile name with up to 80 characters.
• Example

host1(config)#profile foo

• Use the no version to remove a profile.

Assigning a Profile

To assign a profile to an interface, use the profile command from Interface mode.

    profile

• Use to assign a profile to a PPP interface. The profile configuration is used to dynamically create an upper IP interface.
• Example

host1(config-if)#interface serial 2/1

host1(config-if)#encapsulation ppp

host1(config-if)#profile acton

• Use the no version to remove the assignment from the interface.