Re: SNMP ipRouteTable

From: Aviva Garrett (aviva@juniper.net)
Date: Fri Feb 02 2001 - 18:06:07 EST


Richard,

I asked the engineers and got this answer:

> The tap interface is the interface used by programs like tcpdump
> to capture packets, it's a software pseudo interface, and there's
> only ever one of them.
>
> The pimd/pime interfaces are software pseudo interfaces used for PIM
> encaps/decaps, but they are deprecated, and are currently unused on
> any shipping Juniper products.
>
> We now use pe/pd interfaces in conjunction with a tunnel pic to do PIM
> encaps/decaps.

I hope that this is enough information to guide you along.

Thanks,
..Aviva

In message <CB1E59E84CE5D3118E5C00508B6D7555BEAD8E@s1000.orchestream.com>you wr
ite:
> > pime is the interface used on PIM tunnels for PIM encapsulation, and
> > pimd is its counterpart for decapsulation. This is only
> > hinted at in the manuals, but not clearly explained.
> > I'll work with the writers to get this remedied.
> >
> > tap is an interface from the FPC to the Routing Engine that is used to
> > "snatch" packets that are being sampled. I thought we mentioned this
> > once upon a time in the manuals, but I can't find it now. Again, we'll
> > get a description in.
>
> Many thanks for that. Just a few more questions on the these 'interfaces'.
>
> Do you get a tap entry per FPC? How is this described in SNMP? tap.0 tap.1
> ??
>
> Also once PIM tunnels are configured how are they described? pimd.0 pimd.1 ?
>
> Rich



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