[trill] Some question about TRILL IS-IS and Distribution Tree

[Nguyen Huu Tho <[e-mail]>]

Dear all,

I have some questions about trill IS-IS and Distribution Tree. Anybody can
help me ?

1. When TRILL use IS-IS, TRILL has a new type of hello message which is
called TRILL HELLO.
So, IS-IS HELLO of original IS-IS still have used or TRILL hello message
includes all function of original IS-IS hello and original IS-IS HELLO
isn't exist.

2. Is there any mechanism for each RBridge to choose the used distribution
tree and advertise them to other RBridges

3. In RFC 6325, In distribution tree part, When the RB having the highest
tree root priority send a list of s tree roots nickname. Why we have the
case s < k trees which all RBs in the campus must calculate ?

4. When Ingress RB have multi nicknames, there is any mechanism to choose
which nicknames the RB will put in the Ingress nickname of TRILL header of
this frame

5. When a Ingress RB1 receive a multi-destination frames, when the Ingress
RB1 choose the distribution tree (have tree root is RB4). When the frame
reaches to the RB4, whether the tree root send the frame to RB2 with
outer.MacDA is All-RBridges or unicast Outer.MacDA ?
And when the frame reaches to RB4, whether RB send to all nodes in this
distribution tree with the outer.MacDA is All-RBridges or not?

                                          (RB2)     === (RB4) (tree root)
                                     //             \\
                  (Ingress) (RB1)           (RB3)


Thanks ,

-- 
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| Nguyen Huu Tho.
   Mail: [e-mail]  |
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