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... Non Broadcast Multiple Access (NBMA) networks may be utilized in a
variety of ways. At one extreme, they can be used to simply provide
administratively configurable point to point ...
... IPv6 hosts, in certain
situations). At the other extreme, NBMA networks that support dynamic
establishment and teardown of Virtual Circuits (or functional
...
... IPv6 over NBMA
networks. It forms the basis for companion documents that provide
details specific to various NBMA technologies (for example, ATM ...
... interfaces on an NBMA network. These will be generically referred to
as "SVCs" in the rest of the document. The use of administratively
configured point to point ...
... multicasting. This is not
particularly true of most NBMA network services, and usually requires
convergence protocols to emulate the desired service ...
... IP is
deployed across NBMA networks capable of supporting dynamic
establishment of calls (SVCs or functional equivalent). For IPv6
...
... NBMA-specific companion specifications. Certain NBMA
networks may provide a form of connectionless service (e.g. SMDS). In
...
... Link" when used
over NBMA networks, and introduces the notion of the Transient
Neighbor. Section 3 describes the modifications to the MARS ...
...
Note that section 1.3.1 applies when the NBMA network is being used
to provide only configured point to point (PVC ...
...
The majority of this section applies only to NBMA networks when used
to provide point to point and point to multipoint SVCs. Section 7
...
... point to point and point to multipoint SVCs. Section 7
discusses the case where the NBMA network is being used to supply
only point to point PVCs ...
... control messages SHALL be defined in companion documents specific to
particular NBMA network technologies.
...
... node is located on the NBMA
network. The redirected node will set up a pt-pt VC to the new node ...
... This time limit MAY be reduced through configuration or as specified
in companion documents for specific NBMA networks.
...
... signaling the establishment and teardown of pt-pt and
pt-mpt SVCs for different NBMA networks SHALL be specified in
companion documents.
...
... NBMA drivers can assume that they will always be
talking to another driver attached to the same type of NBMA network.
(For example, an IPv6/NBMA ...
... and [NBMA Subaddress] fields are specific to each NBMA network, and
SHALL be specified in companion documents.
...
... IPv6 over NBMA
networks. It forms the basis for subsidiary companion documents that
provide details for various specific NBMA technologies (such as ATM ...
... ATM Forum, "ATM User Network Interface (UNI) Specification Version 3.1", ISBN 0-13-393828-X, Prentice Hall, Englewood Cliffs, NJ, June 1995. ...
... Crawford, M., "A Method for the Transmission of IPv6 Packets over Ethernet Networks", RFC 1972(-> 2464prop), August 1996. ...
... Plummer, D., "An Ethernet Address Resolution Protocol - or - Converting Network Protocol Addresses to 48.bit Ethernet Address ...
... Armitage, G., Schulter, P. and M. Jork, "IPv6 over ATM Networks", RFC 2492prop, January 1999. ...
... semantics of the IPv6 protocols. No changes need to be made
to the IPv6 Network Layer. Since the concept of the security
association is not being changed for NBMA ...
... that chooses what (and even if) to reply to the solicitation. Thus,
NBMA will be transparent to the network layer except in cases where
extra services ...
... IPv6/NBMA driver is passed the Neighbor
Solicitation message from the IPv6 network layer, it follows the
steps described in section 4.4.2 Sending Multicast ...
... nodes will process the data as described in section 4.5 and pass
the de-encapsulated packets to the IPv6 network layer.
...
... node's link-layer address from the
IPv6 network layer. It will then follow the steps described in
section section 4.4.1 to send the NA message ...
... VC, de-encapsulate the message, and pass it
to the IPv6 Network layer for processing as described in section 4.5.
The soliciting node ...
... NBMA driver
is passed the Neighbor Advertisement from the IPv6 network layer, it
follows the steps described in section 4.4.2 to send the NA message ...
... incoming packet as described in section 4.5 and then pass the packet
to the IPv6 network layer where it will be processed as described in
[7 ...
... IPv6/NBMA driver gets the JoinLocalGroup request from the
IPv6 Network Layer, it follows the process described in section 4.2.
...
... IPv6/NBMA driver gets the Router Advertisement message from the IPv6
network layer, it transmits the message by following steps described
in section 4.4.2. The MARS ...
... node on the LL will then process the incoming packet as
described in section 4.5 and pass the received packet to the IPv6
Network layer for processing as appropriate.
...
... IPv6/NBMA driver gets the request from the IPv6 Network Layer to send
the packet, it follows the steps described in section 4.4.2. The RS ...
... Router Advertisement
as described in section 4.5 and will pass the RA message to the IPv6
network layer. The IPv6 network layer ...
... VC to a
neighbor (see section 4.4.1), are detected and handled at the IPv6
network layer, through Neighbor Unreachability Detection. The node ...
... NBMA
driver gets the Neighbor Solicitation message from the IPv6 network
layer, it follows the steps outlined in section 4.4.2. The NS ...
... filter out the message so that the sending node's
IPv6 network layer will not see the message. The IPv6 network layer ...
... encapsulate the packet, and pass the Redirect message
to the IPv6 Network Layer, as described section 4.5.
...
... Redirect Message. For
NBMA networks, the Redirect Message should contain the link-layer
address option as described in [7 ...
... IPv6/NBMA
driver gets the JoinLocalGroup request from the IPv6 network layer,
it follows the process described in section 4.2.
...
... node's IPv6/NBMA driver gets the request from the IPv6
Network Layer to send the packet, it follows the steps described in
section 4.4.2. This will result in one or more nodes ...
... node that receives the solicitation
packet will process it as described in section section 4.5. Only the
IPv6 network layer of the DHCPv6 server/relay-agent ...
... encapsulate the multicast packet and then pass
it up to the IPv6 Network Layer for processing. The IPv6 network
...
... it up to the IPv6 Network Layer for processing. The IPv6 network
layer will deliver the DHCPv6 ...
... Agent. Prior to sending
the DHCPv6 message, the IPv6 network layer will perform Neighbor
Discovery (if necessary) to obtain the link-layer address ...
... NBMA drivers will receive the
packet, de-encapsulate it, and passed it up to the IPv6 Network
layer. If the originating node ...
... IPv6/NBMA driver gets the request
from the IPv6 network layer to send the packet, it follows the steps
described in 4.4.2. The node ...
... encapsulate the incoming packet and the packet will be passed to the
IPv6 network layer for processing. The MARS client ...
... guarantees, and optimal use of underlying IP and NBMA network
resources are still subjects of ongoing research in the IETF ...
... flow detection as a
means to optimize the use of NBMA network resources through the
establishment of inter-LL shortcuts.
...
...
NBMA shortcuts are for the benefit of 'the network' optimizing its
forwarding of IPv6 packets in the absence of any other guidance
...
... NBMA host to have some mechanism for
overriding attempts by 'the network' to optimize its internal
forwarding path.
...
... A zero FlowID has IPv6 semantics of "the source allows the network
to utilize its own discretion in providing best-effort forwarding
service ...
... non-zero FlowID might be assigned by the source host after
negotiating a preferred forwarding mechanism with 'the network' (e.g.
through dynamic means such as RSVP, or administrative means).
...
... Alternatively it can simply be assigned randomly by the source host,
and the network will provide default best effort forwarding (an IPv6
router ...