Remark: I'm not sure the two bullets (quoted further down) tell the full
story as they stand. I propose to modify them as follows:
1. Basic Mapping Rule (BMR) - mandatory. There can only be one
Basic Mapping Rule per End-user IPv6 prefix. In combination
with the End-user IPv6 prefix, the Basic Mapping Rule is used
to derive the IPv4 prefix, address, or shared address and
the PSID assigned to the CE.
2. Forwarding Mapping Rule (FMR) - optional, used for forwarding.
The Basic Mapping Rule is also a Forwarding Mapping Rule. Each
Forwarding Mapping Rule will result in an entry in the Rules
table for the Rule IPv4 prefix. Given a destination IPv4 address
and port within the MAP domain, a MAP node can use the matching
FMR to derive the End-user IPv6 address of the interface through
which that destination address-port combination can be reached.
On 12/02/2013 9:22 AM, Ole Troan wrote:
Tom,
Thanks. What about the assertions in the bullets?
sorry, may be my short term memory... what do you mean?
cheers,
Ole
On 12/02/2013 3:27 AM, Ole Troan wrote:
Tom,
I'm still hoping to see a response to this.
On 06/02/2013 8:42 AM, Tom Taylor wrote:
Section 5 of the latest version of MAP has the following:
1. Basic Mapping Rule (BMR) - mandatory, used for IPv4 prefix,
address or port set assignment. There can only be one Basic
Mapping Rule per End-user IPv6 prefix. The Basic Mapping Rule is
used to configure the MAP IPv6 address or prefix.
2. Forwarding Mapping Rule (FMR) - optional, used for forwarding.
The Basic Mapping Rule is also a Forwarding Mapping Rule. Each
Forwarding Mapping Rule will result in an entry in the Rules
table for the Rule IPv4 prefix.
Question: there will always be a BMR. In the absence of additional
rules, how does a CE know whether it can use the BMR for forwarding or
must always use the default rule?
the answer to that is in section 7, last bullet.
that is, the MAP CE must be configured to be in hub and spoke mode or mesh mode.
which mode it is in decided if the BMR is used for forwarding or not.
cheers,
Ole
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