[j-nsp] Graceful Restart on a Single Routing Engine

[Salim Amari]

Thanks a lot for your help,



By the way I have another concern regarding  the Graceful restart for OSPF
Protocol when BFD is enabled.

if we have the Graceful Restart enabled for OSPF protocol and at the same time
we have BFD enabled for OSPF with the following values:

 

bfd-liveness-detection {

           
minimum-interval 100;

           
minimum-receive-interval 100;

            multiplier
3;

        }





DO  BFD parameters  have impact on GR, because from the show ospf
overview I can see that the restart grace period is 210 SEC.

so with BFD enabled  it will not have enough time to restart as BFD will
detec rapidely the failure.



show ospf overview 

Instance: master

  Router ID: 10.40.0.1

  Route table index: 0

  LSA refresh time: 50 minutes

  Traffic engineering

  Restart: Enabled

    Restart duration: 180 sec

    Restart grace period: 210 sec

    Helper mode: Enabled





Your support is Hihly appreciated

> From: dhanks at juniper.net
> To: amaris501 at hotmail.com; juniper-nsp at puck.nether.net
> Subject: Re: [j-nsp] Graceful Restart on a  Single Routing Engine
> Date: Tue, 18 Dec 2012 22:10:52 +0000
> 
> Harry wrote a really good chapter on this in the new Juniper MX book.
> Chapter 9.
> 
> http://tinyurl.com/junipermx
> 
> 
> On 12/18/12 11:29 AM, "Salim Amari" <amaris501 at hotmail.com> wrote:
> 
> >
> > 
> > 
> > 
> >Hi All,
> > 
> >we have Juniper M120 routers with single Routing Engine (RE) , and I want
> >to enable the Graceful Restart (GR) feature for BGP OSPF MPLS protocols ,
> >but I found in some sources that it is usless to enable GR for a router
> >with a single RE , and it can can only work as helper GR for Routers with
> >redundant RE.
> > 
> >Could please Confirm me this information.
> > 
> > 
> >BR/
> >Salim             
> >_______________________________________________
> >juniper-nsp mailing list juniper-nsp at puck.nether.net
> >https://puck.nether.net/mailman/listinfo/juniper-nsp
> >
> 
>