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User Guide for Cisco Home Agent Service Manager
OL-6918-01
Chapter 4 Using Service Manager
Activating Services on HA Devices
• Click Cancel to exit the wizard.
• Click Back to edit the configuration.
VRF Support on HA
Mobile nodes can share a common IP address across different realms on the same Home Agent. This
feature is based on the Multi-VPN Routing and Forwarding (VRF) Customer Edge (CE) network
architecture to support multiple VPNs (and, therefore, multiple customers) per Customer Edge (CE)
device. This reduces the amount of equipment required and simplifies administration, while allowing the
use of overlapping IP addresses within the CE network. Separate VRF table are maintained for each
realm. Multiple IP addresses are used at the Home Agent to indicate different enterprise connections or
VRFs to the PDSN. Thus, one mobile IP tunnel runs between the PDSN and the HA per realm or VRF.
A typical scenario with VRF enabled on Home Agent:
When a Mobile IP registration requests (RRQ) arrives at the Home Agent, it will read the NAI field of
the incoming RRQ and select a pre-configured IP address. This forms a mobile IP tunnel back to the
PDSN with this IP address as the source address of the tunnel. The Home Agentt adds a host route that
corresponds to the IP address that is assigned for the mobile in the routing table of the VRF that is
defined for the realm. The tunnel end-point at Home Agent is also inserted in the VRF routing table. This
feature enables the mobile nodes to share common IP address across different realms on the same Home
Agent.
To display a list of all realms that are configured with VRF in the HA Service Manager:
Step 1 Choose a device group. (Choose Service Manager > Select Group.) See Selecting an HA Device
Group, page 4-3.
Step 2 Choose HA Service Manager > Service Activation > HA VRF.
The Home Agent VRF dialog box displays a list of VRF configured realms, in the selected device group.
It contains:
Click any column heading to sort the list.
Step 3 From the Home Agent VRF dialog box, you can:
• Click Execute without selecting a realm to configure its VRF.
• Choose a realm and:
–
Click Execute to modify its VRF configuration.
–
Click List to view its current configuration.
–
Click Delete to delete it. You can also delete one or more VRF configurations at the same time.
Field Description
Realm Name Specifies the realm name. It is a unique identifier with the syntax @realm.
VRF Name Specifies a unique name to identify the VRF for a specific group.
Virtual HA IP
Address
Specifies the IP address of the Home Agent.