Cisco Intelligent Wireless Access Gateway User Manual

EoGRE Deployment with PMIPv6 Integrated for Mobility Service
Proxy Mobile IPv6 (PMIPv6) provides mobility service to the mobile nodes that are connected to the Mobile
Access Gateway (MAG) via an EoGRE tunnel. The following figure shows the structure of the EoGRE
deployment with PMIPv6 integrated for mobility service.
Figure 5: Structure of the EoGRE Deployment with PMIPv6 Integrated for Mobility Service
Mobile nodes access the mobile internet service over Wi-Fi access points. The access points are either
autonomous access points or are connected to the Cisco Wireless LAN Controller (WLC). These access points
and WLCs are used as residential gateways or CPE devices. CPEs are preconfigured with a point-to-multipoint
GRE IP tunnel to the Cisco ASR 1000 Series Aggregation Services Routers as the MAG. The tunnel from
the CPE device can be configured with a static GRE key. The CPEs are provisioned to forward the Ethernet
traffic from both public and private customers to the GRE tunnel, and to add a VLAN tag on the Ethernet
frame before forwarding the traffic.
As with regular PMIPv6 deployments, the Cisco ASR 1000 Series Aggregation Services Routers can create
IP sessions on EoGRE access tunnels similar to the regular IP sessions on the physical Ethernet interfaces,
and allocate IP addresses for mobile nodes, either locally or in the proxy mode. Mobility service is provided
to the mobile nodes and the tunneled Ethernet traffic is forwarded via IP tunnels to the Local Mobility Anchor
(LMA).
When you ping a mobile node from the MAG with a packet size that is larger than that of the path maximum
transmission unit (PMTU) that is configured with the DF bit set, the packet will be dropped. However,
you will not get the return type as M.M.M (could not fragment). This is reflected in the log messages or
error messages.
Note
For more information about PMIPv6 and the ISG configurations for the iWAG, see the Intelligent Wireless
Gateway Configuration Guide.
Intelligent Wireless Access Gateway Configuration Guide
42 OL-30226-03
Service Provider WiFi: Support for Integrated Ethernet Over GRE
EoGRE Deployment with PMIPv6 Integrated for Mobility Service

Cisco Intelligent Wireless Access Gateway Specifications

General

Brand	Cisco
Model	Intelligent Wireless Access Gateway
Category	Gateway
Language	English