答复: Re: vrrp faster backup

Dear Arnab 

Thanks for your feedback.
Then when the priority value isn't zero, the Backup Router should waiting 
the Master Router time out. 
Are they any other way when priority isn't zero? 
 
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
Tel:+86-21-68896823/ 13701767991
Mobile:+86-13828760990
Email:[email protected] 





Arnab Bakshi <[email protected]> 
2009-07-06 20:52

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Re: [VRRP] 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
Tel:+86-21-68896823/ 13701767991
Mobile:+86-13828760990
Email:[email protected] 



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