From: Brian McGahan (bmcgahan@internetworkexpert.com)
Date: Fri Jun 16 2006 - 00:13:52 ART
Check lab 12 task 6.2.
HTH,
Brian McGahan, CCIE #8593
bmcgahan@internetworkexpert.com
Internetwork Expert, Inc.
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> -----Original Message-----
> From: Pierre-Alex [mailto:paguanel@hotmail.com]
> Sent: Thursday, June 15, 2006 4:10 PM
> To: Brian McGahan; Koen Zeilstra
> Cc: ccielab@groupstudy.com
> Subject: Re: Generating UDP broadcast from router using RTR possible?
>
> Hi Brian,
>
> I do have IEWB-RS version 3.
>
> In which lab is the checking technique covered?
>
> Thanks
>
> Pierre-Alex
>
> ----- Original Message -----
> From: "Brian McGahan" <bmcgahan@internetworkexpert.com>
> To: "Pierre-Alex" <paguanel@hotmail.com>; "Koen Zeilstra"
> <koen@koenzeilstra.com>
> Cc: <ccielab@groupstudy.com>
> Sent: Thursday, June 15, 2006 10:50 PM
> Subject: RE: Generating UDP broadcast from router using RTR possible?
>
>
> The problem you're seeing is most likely related to directed-broadcast
> being disabled on the interface. Issue the "ip directed-broadcast"
> interface level command on E0/0 and see if that has an effect. Also
you
> can change the destination to 255.255.255.255 in the RTR if you want
an
> all subnet broadcast. If you have IEWB-RS this is covered in the
volume
> 1 solutions guide under how to verify that the ip multicast-helper map
> is working.
>
>
> HTH,
>
> Brian McGahan, CCIE #8593
> bmcgahan@internetworkexpert.com
>
> Internetwork Expert, Inc.
> http://www.InternetworkExpert.com
> Toll Free: 877-224-8987 x 705
> Outside US: 775-826-4344 x 705
> 24/7 Support: http://forum.internetworkexpert.com
> Live Chat: http://www.internetworkexpert.com/chat/
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of
> > Pierre-Alex
> > Sent: Thursday, June 15, 2006 5:09 AM
> > To: Koen Zeilstra
> > Cc: ccielab@groupstudy.com
> > Subject: Re: Generating UDP broadcast from router using RTR
possible?
> >
> > Sorry the message went before it was ready ...
> >
> > Here it is complete:
> >
> > --------------
> >
> > Koen,
> >
> > Just so you know, I was not able to test multicast helper-map using
> DNS
> > broadcast as a source
> > of broadcast traffic. Using a router running RIP in version 1 did
> not
> > cut
> > it either.
> >
> > Router generating DNS / RIPv1
> > (source)--F0/0--R2----multicast----r3-e0/0--R4(Receiver)
> >
> > I had to use a server with a traffic generator as below:
> > Server(source)--F0/0--R2----multicast----r3-e0/0--R4(Receiver)
> >
> > My problem remains: on the exam I will not have a way to test that
the
> > multicast-helper map is working as expected .
> >
> > Pierre-Alex
> >
> >
> >
> > ----- Original Message -----
> > From: "Pierre-Alex" <paguanel@hotmail.com>
> > To: "Koen Zeilstra" <koen@koenzeilstra.com>
> > Cc: <ccielab@groupstudy.com>
> > Sent: Thursday, June 15, 2006 12:03 PM
> > Subject: Re: Generating UDP broadcast from router using RTR
possible?
> >
> >
> > > Koen Just so you know, I was not able to test multicast helper-map
> using
> > > DNS broadcast as a source
> > > of broadcast traffic. Using a router running RIP in version 1
> > >
> > >
> > >
> > > ----- Original Message -----
> > > From: "Koen Zeilstra" <koen@koenzeilstra.com>
> > > To: "Pierre-Alex" <paguanel@hotmail.com>
> > > Cc: <ccielab@groupstudy.com>
> > > Sent: Thursday, June 15, 2006 10:31 AM
> > > Subject: Re: Generating UDP broadcast from router using RTR
> possible?
> > >
> > >
> > >> Piere-Alex,
> > >>
> > >> With help of a blind dns lookup you are able to do at lease UDP
> > broadcast
> > >> to port 53.
> > >>
> > >> Router(conf)# ip domain.lookup
> > >> Router# cisco.com
> > >> Translating "cisco.com"...domain server (255.255.255.255)
> > >>
> > >>
> > >> kind regards,
> > >>
> > >> Koen Zeilstra
> > >>
> > >> -----------------------
> > >> Forgetfulness, n.:
> > >> A gift of God bestowed upon debtors in compensation for their
> > >> destitution of conscience.
> > >>
> > >> On Thu, 15 Jun 2006, Pierre-Alex wrote:
> > >>
> > >> | Is it possible to trick the router into sending UDP broadcasts
> via
> > rtr?
> > >> |
> > >> | I am getting "encapsulation failure" when running the
following:
> > >> |
> > >> | rtr 2
> > >> | type udpEcho dest-ipaddr 10.1.2.255 dest-port 65300
> > >> | request-data-size 1500
> > >> | timeout 50
> > >> | frequency 1
> > >> | rtr schedule 2 life forever start-time now
> > >> |
> > >> |
> > >> | It will greatly help me in testing various things.
> > >> |
> > >> | Thanks
> > >> |
> > >> | Also, I have noticed that my destination port was not respected
> (but
> > >> this is a
> > >> | minor thing).
> > >> |
> > >> |
> > >> | *Mar 1 01:24:07.393: IP: s=10.1.2.1 (local), d=10.1.2.255
> > >> (Ethernet0/0), len
> > >> | 80, encapsulation
> > >> | failed
> > >> | *Mar 1 01:24:07.393: UDP src=50659, dst=1967
> > >> | r1#
> > >> |
> > >> | Pierre-Alex
> > >> |
> > >> |
> >
>
This archive was generated by hypermail 2.1.4 : Sat Jul 01 2006 - 07:57:33 ART