Руководство По Обслуживанию для Cisco Cisco Packet Data Gateway (PDG)
Generally Available 06-30-2010
HA Features in Release 8.0
1-33
HA Features in Release 8.0
This section provides information for new features in the Home Agent product in Release
8.0.
8.0.
Mobile IPv6
Benefits
Enables use of single mobility core network for provisioning of IPv6 and IPv4 Mobile IP
access services. Mitigates IPv4 address depletion concerns for address intensive always-on
applications and interactive applications such as VoIP, video telephony and Push-to-Talk
(PTT).
access services. Mitigates IPv4 address depletion concerns for address intensive always-on
applications and interactive applications such as VoIP, video telephony and Push-to-Talk
(PTT).
Description
MIPv6 allows a user to maintain a persistent IPv6 address even when handing off between
Access Service Networks (ASN's) connected to different ASN GW's and allows the access
device to be reachable via the same MIPv6 Home of Address (HoA) irrespective of the
current point of attachment. A Mobile IPv6 Node (MN) uses two IPv6 addresses:
Access Service Networks (ASN's) connected to different ASN GW's and allows the access
device to be reachable via the same MIPv6 Home of Address (HoA) irrespective of the
current point of attachment. A Mobile IPv6 Node (MN) uses two IPv6 addresses:
●
Care of Address (CoA) derived from Interface-ID assigned by DHCP Proxy component
on ASN GW after verification of user or device credentials during network access
on ASN GW after verification of user or device credentials during network access
●
Home of Address (HoA) assigned by HA during the Mobile IP registration with home
network. The MN registers its current point of attachment by providing its CoA.
network. The MN registers its current point of attachment by providing its CoA.
The MN can operate in two modes:
●
Bidirectional tunnel - In this mode, all data traffic originating from or destined to the
MNs MIPv6 HoA is tunneled via the HA.
MNs MIPv6 HoA is tunneled via the HA.
●
Route optimization - In this mode, the MN informs its correspondent node of its current
point of attachment, allowing the correspondent node to directly route packets destined
to the MN's HoA through its CoA. Route optimization will not be supported in this
release.
point of attachment, allowing the correspondent node to directly route packets destined
to the MN's HoA through its CoA. Route optimization will not be supported in this
release.
Supported Features
●
MIPv6 message authentication mobility options in binding updates as per RFC 4285
●
MN-NAI mobility option in binding messages as per RFC 4283. The MN-NAI option
must be included in all Binding messages (Eg initial registration and subsequent
updates).
must be included in all Binding messages (Eg initial registration and subsequent
updates).
●
Native 6-in-6 tunneling between ST40 ASN GW and HA's
●
Session-based 6TO4 tunneling between ST40 HA and ST16 ASN GW
●
Platform-based 6TO4 tunneling between ST40 HA and adjacent 6BONE gateway
routers
routers