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?
~ Tom McMillan, L3 Linkabit
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