Hi, Robert:

Aijun Wang
China Telecom

> On Jan 20, 2022, at 17:20, Robert Raszuk <[email protected]> wrote:
> 
> 
> Aijun, 
> 
> > You are proposing to use the Out of Band channel to solve the IGP problem.
> 
> I am not sure if you noticed but Tony's proposal is an IGP extension not out 
> of band channel. 

[WAJ] The exact description should be “It proposes to use IGP establishing the 
out of band channel to deliver the PUB/SUB information”

> 
> > all the registered clients will also receive the massive notification 
> > information unless you do some filter action on the ABRs.
> 
> Did you have a chance to read the draft yet ? Hint: the registration is all 
> about filtering. 

[WAJ] It depends on the amount of registration prefixes.

> 
> Cheers,
> R.
> 
> 
>> On Thu, Jan 20, 2022 at 4:42 AM Aijun Wang <[email protected]> wrote:
>> HI, Tony:
>> 
>>  
>> 
>> You are proposing to use the Out of Band channel to solve the IGP problem. 
>> There are already existing such channel, why we bother IGP to establish new 
>> one?
>> 
>> And, don’t’ you think you open the gate for DDoS attack of the ABR, or all 
>> of the ABRs within the network? You need to consider various methods to 
>> mitigate it.
>> 
>> And for the massive failures scenario, as that you argued for other proposed 
>> solutions, all the registered clients will also receive the massive 
>> notification information unless you do some filter action on the ABRs.
>> 
>> Then what the advantages that your proposal when compared to the PUA/PULSE 
>> solution?
>> 
>>  
>> 
>>  
>> 
>> Best Regards
>> 
>>  
>> 
>> Aijun Wang
>> 
>> China Telecom
>> 
>>  
>> 
>> From: [email protected] <[email protected]> On Behalf Of Tony Li
>> Sent: Thursday, January 20, 2022 12:19 AM
>> To: Aijun Wang <[email protected]>
>> Cc: lsr <[email protected]>
>> Subject: Re: [Lsr] New Version Notification for draft-li-lsr-liveness-00.txt
>> 
>>  
>> 
>> Hi Aijun,
>> 
>>  
>> 
>>  
>> 
>> If we use pub/sub mechanism, why don’t we accomplish it via the management 
>> system, or controller? 
>> 
>> No IGP extension needed then.
>> 
>>  
>> 
>>  
>> 
>> As I recall, you are the one who posed the original problem. If a 
>> centralized solution works for you, then that’s certainly fine by me.
>> 
>>  
>> 
>> 
>> 
>> 
>> Also no pressure for the ABR to keep the RDB(Registration Database) and the 
>> TCP/QUIC server connections
>> 
>>  
>> 
>>  
>> 
>> I’m sorry, I don’t undertsand you. Is that a question?
>> 
>>  
>> 
>>  
>> 
>> Tony
>> 
>>  
>> 
>> _______________________________________________
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