Re: draft-kou-ospf-immediately-replying-hello-00.txt

[Zengjie Kou <kouzengjie at HUAWEI.COM>]

Hi,Acee,
    If a router interface whose role is changed(e.g.DR goes down), the router will notify all routers about the change by immediate hello.
 After all router get the change, election will be reprocessed. In contrast to normal hello, immediate hello avoid the backupSeen.
 Namely, improving convergence.

Thanks a lot,
Zengjie

----- Original Message ----- 
From: "Acee Lindem" <acee at CISCO.COM>
To: <OSPF at PEACH.EASE.LSOFT.COM>
Sent: Saturday, February 18, 2006 5:17 AM
Subject: draft-kou-ospf-immediately-replying-hello-00.txt


> Hi Zengjie,
> 
> Under what situations does having the router who changed to/from
> DR/BDR improve convergence (section 6.2)? Since DR/BDR election
> is a distributed algorithm dependent on the calculating routers state, it
> seems this won't help in all that many cases.
> 
> Thanks,
> Acee