[MEXT] Processing of BRI (Binding Revocation) by MAG

["Magesh Shanmugam" <mshanmugam at intellinet-india.com>]

Ahmad

 

I have a query regarding the handling of Binding Revocation by MAG for individual binding session. 

Following is the scenario:

 

Scenario:

 

1. Proxy Mobile Initial Registration, MAG sends PBU to LMA with HNP option set to ALL_ZERO for MN 1.

2. LMA in turn sends back PBA with 3 HNP(s) assigned to MN 1 and updates Binding Cache Entry.

3. MAG updates Binding Update List entry and sends Router Advertisement to the MN with all the

    prefixes and prefix lifetime.

    Note: MAG considers the prefix lifetime as binding lifetime and starts Binding Lifetime timer.

4. Bi-directional tunnel is established between MAG and LMA. 

5. Prefix Route(s) are created for all the prefixes at MAG.

6. MN 1 gets one IP Address from the alloted 3 HNP(s).

7. LMA sends BRI message with one HNP (out of the alloted 3 HNPs) with revoke trigger as

   "ADMINISTRATIVE REASON".

 

After step 7, when MAG receives BRI message with only one HNP and MN-ID:

 

Queries:

 

1. Will MAG stop the binding lifetime timer (started after binding session establishment), due to the

    received BRI message?

2. Will MAG delete the complete Binding Update List maintained for the MN (MN 1) or will it delete

    only the corresponding HNP entry from the BUL and send RA message to MN 1 (eventhough

    the IP Address used by MN is not from the HNP received in BRI message)?  If it deletes only the

    corresponding HNP entry, what will happen to the Binding Lifetime timer?

 

Thanks

S Magesh

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