[Xorp-users] Fwd: underlying vif is not UP

[hilal chouman]

hi guys!
Thanks for help. Everything went allright and I am now able to commit the
cahnges without errors and save them and go out to the operational mode
without loosing my configuration. The problem was based on 2 things:
1- the conflict between the preconfigured IPs on the linux system and that
of the free BSD.
2- one of the interfaces was inactive in the linux operating system
3- the interfaces must be connected to a switch as (Venketesan said
previously).

Now, I am able to have unicast forwarding correctly.

For the multicast forwarding, I still have a slight problem, my network
looks like this:

Content server <-------->multicast enabled router (xorp) <-------->
destination

I have network analyzers on both the server and the destination, I was able
to see PIM-SM hello messages on the destination machine but there is no
reply.

Basically I was configuring the rp statically, but ten changed it to
candidate BSR/candidate RP option, nothing changed.
I thought that it is because I ahve one router only, the routing is not
successful, I am trying to configure another router and add it between the
content server and the destination so that I  have 2 enabled routers in
between.
Now, honestly the idea of the candidate BSR/candidate RP is not obvious for
me. Any body has informaton on that? and where might be the problem??
Regards.


On 10/18/06, Venketesan <venkthi1 at iit.edu> wrote:
>
> I had the problem (in 1.2), basically the NIC needs to be connected to
> a switch i.e. it shud have some connection.
> Thanks,
> Venkat
>
>
>
>
>
> ---------- Forwarded message ----------
> From: hilal chouman <hilalchouman at gmail.com>
> Date: Oct 18, 2006 6:56 PM
> Subject: Re: [Xorp-users] underlying vif is not UP
> To: Pavlin Radoslavov <pavlin at icir.org>
>
> I'll check that Pavlin and tell you the feed back
> I have a question about what you mentioned about "underlying interface is
> really UP". Do you mean being ENABLED? If so, It is enabled. But I can't
> find the UP remark anywhere??
> I'll check if the interface has a previous configured IP and tell you
> back.
>
> Regards,
> Hilal
>
>
>
> On 10/18/06, Pavlin Radoslavov <pavlin at icir.org > wrote:
> >
> > > I am a new  xorp user. I am trying to enable multicast routing
> > (PIM_SM) and
> > > Whenever I reach the mfea4 configuration and try to commit the changes
> > I
> > > already did, I receive this message:
> > >
> > > *102 Command failed Cannot start vif fxp0. underlying vif is not UP.*
> > >
> > > I am stuck at this point and can't commit the changes and thus I am
> > obliged
> > > to discard them If I wanna go out of the configuration mode  to the
> > > operational mode.
> > > If anyone can help with to fix this error, I would be grateful.
> >
> > Can you double-check that you have "interfaces" configuration
> > section and that it contains an entry for fxp0. E.g., if fxp0
> > already has an IP address before starting XORP, then you could use
> > the simpler configuration:
> >
> > interfaces {
> >    interface fxp0 {
> >        default-system-config
> >    }
> > }
> >
> > Otherwise, you need to explicitly configure its IP address, etc:
> >
> > interfaces {
> >    interface fxp0 {
> >        vif fxp0 {
> >            address 10.0.0.1 {
> >                prefix-length: 24
> >            }
> >        }
> >    }
> > }
> >
> > After that double-check that the underlying interface is really UP
> > by using the following xorpsh command:
> >
> > show interfaces
> >
> > Regards,
> > Pavlin
> >
>
>
>
> --
> Hilal Chouman
> هلال شومان
>
> --
> Hilal Chouman
> هلال شومان
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>
>
>


-- 
Hilal Chouman
هلال شومان
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