Hi Les,
Sorry, I have not included my mapping entries in the previous mail. Please
see the example here below.
I am working with the RFC which doesn't support *Preference Value, *so
please ignore it. And, my mapping entries would looks like.
Topology will be a single topology, not a Multi-topology and algorithm
would be SPF not CSPF.
Please read my entry the below order: *<Prefix-start/ prefix-len,
starting SID, range>*
* E1 and E2 already configured Active entries. X is the newly incoming
entry.*
*Scenario 1: (Entries are conflicting with prefix)*
Entry *E1: <10.1.10.0/24
<http://10.1.10.0/24>, 300, 22>*
Entry *E2: <10.1.1.0/24 <http://10.1.1.0/24>,
150, 5>*
* incoming entry is X:*
* Entry X: <10.1.2.0/24
<http://10.1.2.0/24>, 200, 20>*
* Step1: Conflict would be validated between E1 and X.*
* Step2: Conflict would be validated between E2 and X.*
* # what are the entries would be active and what will become
inactive/**excluded entry ?*
*Scenario 2: **(Entries are conflicting with SID)*
Entry *E1: <10.1.10.0/24
<http://10.1.10.0/24>, 300, 22>*
Entry *E2: <7.1.1.0/24 <http://7.1.1.0/24>,
280, 10>*
* incoming entry is X:*
* Entry X: <3.1.1.0/24 <http://3.1.1.0/24>,
285, 20>*
* Step1: Conflict would be validated between E1 and X.*
* Step2: Conflict would be validated between E2 and X.*
* # what are the entries would be active and what will become
inactive/**excluded entry ?*
*Scenario 3: **(Entries are conflicting with prefix and SID)*
Entry *E1: <10.1.10.0/24
<http://10.1.10.0/24>, 300, 22>*
Entry *E2: <5.1.1.0/24 <http://5.1.1.0/24>,
190, 15>*
* incoming entry is X:*
* Entry X: <10.1.1.0/24
<http://10.1.1.0/24>, 200, 20>*
* Step1: Conflict would be validated between E1 and X.*
* Step2: Conflict would be validated between E2 and X.*
*# what are the entries would be active and what will become
inactive/**excluded entry ?*
*Regards,*
*__tech.kals__*
On Fri, Mar 17, 2017 at 12:41 PM, Les Ginsberg (ginsberg) <
[email protected]> wrote:
> It is not possible to answer your query because the way you have presented
> your entries (X, E1, E2, E3) does not tell us what conflicts you have.
>
> Do you have two SIDs assigned to the same prefix? (Prefix conflict)
>
> Do you have the same SID assigned to two different prefixes? (SID conflict)
>
>
>
> This matters – see Section 3.3.6 of the draft for an example as to why.
>
>
>
> Please present your example in the form defined in Section 3:
>
>
>
> Prf - Preference Value (See Section 3.1)
>
> Pi - Initial prefix
>
> Pe - End prefix
>
> L - Prefix length
>
> Lx - Maximum prefix length (32 for IPv4, 128 for IPv6)
>
> Si - Initial SID value
>
> Se - End SID value
>
> R - Range value (See Note 1)
>
> T - Topology
>
> A - Algorithm
>
>
>
> A Mapping Entry is then the tuple: (Prf, Src, Pi/L, Si, R, T, A)
>
>
>
> Thanx.
>
>
>
> Les
>
>
>
>
>
> *From:* tech_kals Kals [mailto:[email protected]]
> *Sent:* Thursday, March 16, 2017 7:22 PM
> *To:* [email protected]; Les Ginsberg (ginsberg); Peter Psenak (ppsenak);
> Stefano Previdi (sprevidi); [email protected]
> *Subject:* [Mapping Server] Conflict Resolution
>
>
>
> Hi Experts,
>
>
>
> Could you please explain me what would be the expected behavior in the
> following scenario in *Quarantine approach*.
>
>
>
> Mapping entries *E1, E2, E3 *are Active entries.
>
>
>
> In case, if incoming new entry say *X *which has conflict with *E1, E2
> and E3.*
>
>
>
> Assume, *X is better than E1 but not better than E2. ( E1 < X < E2)*
>
>
>
> * 1] X is better than E1 so E1 will become excluded entry and X will
> become an active entry*
>
>
>
> * 2] Now, X is compared with E2. E2 is better than X. So, X will become
> excluded entry and E2 is an active entry as it was.*
>
>
>
> *So, X and E1 will become "excluded entry".*
>
>
>
> *I couldn't find any info as shown above in the RFC. Can you please
> clarify ?*
>
>
>
>
>
> *My doubts:*
>
> *1) Will the entry become active only if it wins with all entries which
> are conflicted with this ?*
>
> *2) When doing conflict resolution with other entries, it can win with
> some entries and can lose to some? What could be the behavior ? *
>
> * - This is the case which I explained above.*
>
> * - In this case, X can become active by winning to E1 and lose E2
> which leads X and E1 to become inactive/excluded entry.*
>
>
>
>
>
> can you please clarify ?
>
>
>
>
>
> Regards,
>
> __tech.kals__
>
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