From: Matthew Poole (matthew.poole@blueyonder.co.uk)
Date: Sun Jun 15 2003 - 15:45:49 GMT-3
Sounds good - test it though to be sure.
----- Original Message -----
From: "SHARMA,MOHIT (HP-Germany,ex1)" <mohit.sharma@hp.com>
To: "'Matthew Poole'" <matthew.poole@blueyonder.co.uk>;
<ccielab@groupstudy.com>
Sent: Monday, June 16, 2003 7:26 PM
Subject: RE: IP multicast helper
> Hi ,
>
> ALso in the example from the doc cd, the transmission is possible only in
> one way, IF we want to send also the broadcast from the last hop to the
> first hop back, should'nt we configure two multicast helper commands on
both
> the routers?
>
> One would be to change from broadcast to multicast and the other to change
> it back to broadcast on the LAN side.
>
> Please comment.
>
> Thanks,
>
> Mohit.
>
> -----Original Message-----
> From: Matthew Poole [mailto:matthew.poole@blueyonder.co.uk]
> Sent: Sunday, June 15, 2003 8:13 PM
> To: R.Srikanth; Brian Dennis; 'SHARMA,MOHIT (HP-Germany,ex1)';
> ccielab@groupstudy.com
> Subject: Re: IP multicast helper
>
>
> Hi,
> I have 2 methods, the first is the same as you mentioned. I do an
extended
> trace, destination address 255.255.255.255, source interface is the
outgoing
> interface, specifying the minimum TTL to be 8 (any figure will do as long
as
> it is enough to get to the host) and the port number as 4000 or whatever
> port you mention in your access lists. It's easy to see if you log your
> debugging, though you will only get one. I suspect that you could set the
> count to be 100 and max hop count also to 8 for 100 port 4000 trace's
though
> I never tried it.
>
> My second method is using a UDP sender program somebody gave me, it sends
a
> continuous stream of UDP's on port 4000. Mail me if you want a copy - it
may
> take me a few days to get that to you though.
>
> I can also confirm that the doc CD omitted a directed broadcast on the
> egress interface of the last hop router.
>
> HTH.
>
> Mat.
>
> ----- Original Message -----
> From: "R.Srikanth" <srikanth@cisco.com>
> To: "Matthew Poole" <matthew.poole@blueyonder.co.uk>; "Brian Dennis"
> <brian@labforge.com>; "'SHARMA,MOHIT (HP-Germany,ex1)'"
> <mohit.sharma@hp.com>; <ccielab@groupstudy.com>
> Sent: Monday, June 16, 2003 10:22 AM
> Subject: Re: IP multicast helper
>
>
> > Hi,
> >
> > Could you please share how do you test this scenario ? I tried to
generate
> > packets with specific UDP port numbers using extended traceroute, but
> found
> > it difficult since each probe generated by the traceroute command
> increments
> > the port number sequentially.
> >
> > Thanks,
> >
> > Srikanth.
> >
> >
> > ----- Original Message -----
> > From: "Matthew Poole" <matthew.poole@blueyonder.co.uk>
> > To: "Brian Dennis" <brian@labforge.com>; "'SHARMA,MOHIT
(HP-Germany,ex1)'"
> > <mohit.sharma@hp.com>; <ccielab@groupstudy.com>
> > Sent: Sunday, June 15, 2003 1:06 PM
> > Subject: Re: IP multicast helper
> >
> >
> > > Hi,
> > > Should there be a directed broadcast statement on the outgoing
interface
> > of
> > > the last hop router. In the example they don't have one, though if I
> > recall
> > > correctly when I last played with this it wouldn't work without it.
> > >
> > > Any thoughts? I am planning on playing with this again today, I'll
post
> > my
> > > results.
> > >
> > > Mat.
> > > ----- Original Message -----
> > > From: "Brian Dennis" <brian@labforge.com>
> > > To: "'SHARMA,MOHIT (HP-Germany,ex1)'" <mohit.sharma@hp.com>;
> > > <ccielab@groupstudy.com>
> > > Sent: Sunday, June 15, 2003 7:30 PM
> > > Subject: RE: IP multicast helper
> > >
> > >
> > > > Here is the example from the DocCD.
> > > >
> > > >
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/
> > > > ip_c/ipcprt3/1cdmulti.htm#1002616
> > > >
> > > >
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/
> > > > ip_c/ipcprt3/1cdmulti.htm#1003511
> > > >
> > > > Brian Dennis, CCIE #2210 (R&S/ISP-Dial/Security)
> > > >
> > > > -----Original Message-----
> > > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > > > SHARMA,MOHIT (HP-Germany,ex1)
> > > > Sent: Sunday, June 15, 2003 9:33 AM
> > > > To: ccielab@groupstudy.com
> > > > Subject: IP multicast helper
> > > >
> > > > HI All,
> > > >
> > > > Could somebody please shed some light on this command-
> > > > ip multicast helper-map cpommand, it pops up quite a lot, and cisco
> only
> > > > has
> > > > the command syntax which in itself is an enigma.
> > > > An example would be great.
> > > >
> > > > Thanks as always.
> > > >
> > > > Smiles,
> > > > Mohit.
> > >
> > >
> > >
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