Use a RADIUS CoA to dynamically change the configuration on both the home level and the device level. Use the BRG ID as the key on the CoA on the home level. The included attributes overwrites the existing stored configuration on the home level and subsequently update all devices connected to the home. All devices pick up the new home-level configuration unless a more specific configuration exists on the device level.
A CoA on the device level can use all existing ESM keys as detailed in the 7450 ESS, 7750 SR, and VSR RADIUS Attributes Reference Guide. The keys update the existing configuration on the device level. If the device inherits the specified parameter from the home level, this parameter is updated on the device level; the existing home-level configuration remains intact and is used as the default for other devices.
In specific cases, the configuration can be removed on the device level to be able to fall back to the home level, supported by the RADIUS attribute Alc-Remove-Override. This attribute lists which overrides must be removed on the session level and fall back (revert) to the home-level configuration. If the home parameter changes, the device also picks up the new configuration.
For more information about RADIUS configuration attributes, see the 7450 ESS, 7750 SR, and VSR RADIUS Attributes Reference Guide.