[Xorp-hackers] (no subject)

[Ben Greear]

On 05/12/2010 09:27 AM, Tom.McMillan at l-3com.com wrote:
> I didn’t get any feedback with this question on the users list, so I
> will try here.
>
> This question concerns PIM-SM routing. I’m currently building and using
> v1.7.
>
> Is there any way to disable join suppression in Xorp? If there’s any
> mention of it in the User’s Guide, I’ve yet to find it.
>
>  From rfc4601:
>
> o OptionType 2: LAN Prune Delay
>
> 0 1 2 3
>
> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
>
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> | Type = 2 | Length = 4 |
>
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> |T| Propagation_Delay | Override_Interval |
>
> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
>
> The LAN Prune Delay option is used to tune the prune propagation
>
> delay on multi-access LANs. The T bit specifies the ability of the
>
> sending router to disable joins suppression.
>
> I find that xorp always set the T bit to zero, which means that Join
> Suppression is always enabled.
>
> On the other hand, though, I’m connecting to several Juniper routers,
> which by default *set *the T bit,
>
> which means they disable Join Suppression. I can enable Join Suppression
> by setting this Juniper
>
> variable: *reset-tracking-bit*.
>
> During testing, I’d like to disable or enable Join Suppression on all of
> our XORP routers, too. Is this possible?
>
> If not, where in the code should I look to change this?

I'd look in the pim/ directory.  I'm not sure where (haven't looked), but
if you get stuck, let me know and I'll see if I can give a better hint.

Thanks,
Ben

-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com