Re: vrrp faster backup

Hi Liu,

  As per RFC 3768, section 5.3.4 page 12:

     The priority value zero (0) has special meaning indicating that the
     current Master has stopped participating in VRRP.  This is used to
     trigger Backup routers to quickly transition to Master without having
     to wait for the current Master to timeout.

This is one way I think if the master router gracefully indicates the other
routers in the network.

Regards
Arnab

2009/7/6 <[email protected]>

>
>
> Dear All
>
> I'm a new comer in IETF.
>
> VRRP [RFC 3768] specifies an election protocol that dynamically assigns
> responsibility for a virtual router to one of the VRRP routers on a LAN.
> This election process provides dynamic fail  over in the forwarding
> responsibility should the Master become unavailable.
>
> The router survivability capability provided by the Virtual Router
> Redundancy Protocol requirement: (3 * Master_Adver_Interval) + Skew_timer
> for  Backup Router to declare Masterdown in the VRRP [RFC 3768].
> It will be more than 3 second when the Master_Adver_Interval was 1 second.
> In some LAN environments, the Backup Router needs faster method to declare
> the Master Router is fail.
> As if (2 * Master_Adver_Interval) + Skew_timer or (1 *
> Master_Adver_Interval) + Skew_timer.
> Are there a message type which permits the Backup Router could backup
> faster?
>
> Best Regards
>
>   *Dash Liu 刘志伟 ID: 183475 *
> Chief Engineer Office, Standard Development and Industry Relations  *Product
> Marketing System * *产品市场体系* D206, 889, Bibo Road,ZhangJiang, Pudong
> District, ShangHai P.R.China, 210023
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