Руководство По Устранению Ошибки для Cisco Cisco Packet Data Gateway (PDG)
WiMAX PMIPv6 Operation
▀ Mobile Access Gateway Processing
▄ Cisco ASR 5000 Series Access Service Network Gateway Administration Guide
OL-22953-01
Mobile Access Gateway Processing
The mobile access gateway (MAG) is a PMIPv6 term for the function that initiates the PMIP tunnel toward local
mobility anchor (LMA). As far as WiMAX architecture is concerned, the MAG resides with the ASN GW and the LMA
residesin the CSN.
mobility anchor (LMA). As far as WiMAX architecture is concerned, the MAG resides with the ASN GW and the LMA
residesin the CSN.
The network access server or mobile access gateway obtains the Home Network Prefix before sending the first Router
Advertisement. The HNP is received from the AAA server, or assigned by the LMA via PBU-PBA exchange.
Advertisement. The HNP is received from the AAA server, or assigned by the LMA via PBU-PBA exchange.
The MAG sets related address configuration flags in the (un)solicit Router Advertisement sent to the MS corresponding
to the address configuration mode associated with the MS’s IP session.
to the address configuration mode associated with the MS’s IP session.
Managing Binding Update List
Every mobile access gateway maintains a Binding Update List, which includes:
The identifier of the attached mobile node: the MN-Identifier acquired during the mobile node’s attachment to
the access link.
The link-layer identifier of the mobile node’s connected interface: This is acquired from the received Router
Solicitation messages from the mobile node or during the mobile node’s attachment to the access network. This
is typically a link-layer identifier conveyed by the mobile node.
is typically a link-layer identifier conveyed by the mobile node.
The IPv6 home network prefix of the attached mobile node: This is acquired from the mobile node’s local
mobility anchor through the received Proxy Binding Acknowledgement messages. The IPv6 home network
prefix also includes the corresponding prefix length.
prefix also includes the corresponding prefix length.
The Link-local address of the mobile node on the interface attached to the access link.
The IPv6 address of the local mobility anchor serving the attached mobile node: This address is acquired from
the mobile node’s policy profile or from other means.
The Interface identifier (If-Id) of the access link where the mobile node is currently attached: This is internal to
the mobile access gateway and is used to associate the Proxy Mobile IPv6 tunnel to the right access link where
the mobile node is attached.
the mobile node is attached.
The interface identifier (If-Id) of the bi-directional tunnel between the mobile node’s local mobility anchor and
the mobile access gateway: This is internal to the mobile access gateway. The tunnel interface identifier is
acquired during the tunnel creation.
acquired during the tunnel creation.
A flag indicating whether GRE encapsulation is enabled and the reverse and forward GRE key identifier used in
GRE encapsulation.
Other MAG Functions
The following lists other functions that are performed as part of MAG or access-side service: